Simple Chat Room in NodeJS, expressJS and mongoDB in Docker Swarm
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'use strict';
/*!
* Module dependencies.
*/
const EventEmitter = require('events').EventEmitter;
const Kareem = require('kareem');
const MongooseError = require('./error/mongooseError');
const SchemaType = require('./schematype');
const SchemaTypeOptions = require('./options/SchemaTypeOptions');
const VirtualOptions = require('./options/VirtualOptions');
const VirtualType = require('./virtualtype');
const addAutoId = require('./helpers/schema/addAutoId');
const applyTimestampsToChildren = require('./helpers/update/applyTimestampsToChildren');
const applyTimestampsToUpdate = require('./helpers/update/applyTimestampsToUpdate');
const arrayParentSymbol = require('./helpers/symbols').arrayParentSymbol;
const get = require('./helpers/get');
const getIndexes = require('./helpers/schema/getIndexes');
const handleTimestampOption = require('./helpers/schema/handleTimestampOption');
const merge = require('./helpers/schema/merge');
const mpath = require('mpath');
const readPref = require('./driver').get().ReadPreference;
const symbols = require('./schema/symbols');
const util = require('util');
const utils = require('./utils');
const validateRef = require('./helpers/populate/validateRef');
let MongooseTypes;
const queryHooks = require('./helpers/query/applyQueryMiddleware').
middlewareFunctions;
const documentHooks = require('./helpers/model/applyHooks').middlewareFunctions;
const hookNames = queryHooks.concat(documentHooks).
reduce((s, hook) => s.add(hook), new Set());
let id = 0;
/**
* Schema constructor.
*
* ####Example:
*
* var child = new Schema({ name: String });
* var schema = new Schema({ name: String, age: Number, children: [child] });
* var Tree = mongoose.model('Tree', schema);
*
* // setting schema options
* new Schema({ name: String }, { _id: false, autoIndex: false })
*
* ####Options:
*
* - [autoIndex](/docs/guide.html#autoIndex): bool - defaults to null (which means use the connection's autoIndex option)
* - [autoCreate](/docs/guide.html#autoCreate): bool - defaults to null (which means use the connection's autoCreate option)
* - [bufferCommands](/docs/guide.html#bufferCommands): bool - defaults to true
* - [capped](/docs/guide.html#capped): bool - defaults to false
* - [collection](/docs/guide.html#collection): string - no default
* - [id](/docs/guide.html#id): bool - defaults to true
* - [_id](/docs/guide.html#_id): bool - defaults to true
* - [minimize](/docs/guide.html#minimize): bool - controls [document#toObject](#document_Document-toObject) behavior when called manually - defaults to true
* - [read](/docs/guide.html#read): string
* - [writeConcern](/docs/guide.html#writeConcern): object - defaults to null, use to override [the MongoDB server's default write concern settings](https://docs.mongodb.com/manual/reference/write-concern/)
* - [shardKey](/docs/guide.html#shardKey): object - defaults to `null`
* - [strict](/docs/guide.html#strict): bool - defaults to true
* - [strictQuery](/docs/guide.html#strictQuery): bool - defaults to false
* - [toJSON](/docs/guide.html#toJSON) - object - no default
* - [toObject](/docs/guide.html#toObject) - object - no default
* - [typeKey](/docs/guide.html#typeKey) - string - defaults to 'type'
* - [typePojoToMixed](/docs/guide.html#typePojoToMixed) - boolean - defaults to true. Determines whether a type set to a POJO becomes a Mixed path or a Subdocument
* - [useNestedStrict](/docs/guide.html#useNestedStrict) - boolean - defaults to false
* - [validateBeforeSave](/docs/guide.html#validateBeforeSave) - bool - defaults to `true`
* - [versionKey](/docs/guide.html#versionKey): string - defaults to "__v"
* - [collation](/docs/guide.html#collation): object - defaults to null (which means use no collation)
* - [selectPopulatedPaths](/docs/guide.html#selectPopulatedPaths): boolean - defaults to `true`
* - [skipVersioning](/docs/guide.html#skipVersioning): object - paths to exclude from versioning
* - [timestamps](/docs/guide.html#timestamps): object or boolean - defaults to `false`. If true, Mongoose adds `createdAt` and `updatedAt` properties to your schema and manages those properties for you.
* - [storeSubdocValidationError](/docs/guide.html#storeSubdocValidationError): boolean - Defaults to true. If false, Mongoose will wrap validation errors in single nested document subpaths into a single validation error on the single nested subdoc's path.
*
* ####Options for Nested Schemas:
* - `excludeIndexes`: bool - defaults to `false`. If `true`, skip building indexes on this schema's paths.
*
* ####Note:
*
* _When nesting schemas, (`children` in the example above), always declare the child schema first before passing it into its parent._
*
* @param {Object|Schema|Array} [definition] Can be one of: object describing schema paths, or schema to copy, or array of objects and schemas
* @param {Object} [options]
* @inherits NodeJS EventEmitter http://nodejs.org/api/events.html#events_class_events_eventemitter
* @event `init`: Emitted after the schema is compiled into a `Model`.
* @api public
*/
function Schema(obj, options) {
if (!(this instanceof Schema)) {
return new Schema(obj, options);
}
this.obj = obj;
this.paths = {};
this.aliases = {};
this.subpaths = {};
this.virtuals = {};
this.singleNestedPaths = {};
this.nested = {};
this.inherits = {};
this.callQueue = [];
this._indexes = [];
this.methods = {};
this.methodOptions = {};
this.statics = {};
this.tree = {};
this.query = {};
this.childSchemas = [];
this.plugins = [];
// For internal debugging. Do not use this to try to save a schema in MDB.
this.$id = ++id;
this.s = {
hooks: new Kareem()
};
this.options = this.defaultOptions(options);
// build paths
if (Array.isArray(obj)) {
for (const definition of obj) {
this.add(definition);
}
} else if (obj) {
this.add(obj);
}
// check if _id's value is a subdocument (gh-2276)
const _idSubDoc = obj && obj._id && utils.isObject(obj._id);
// ensure the documents get an auto _id unless disabled
const auto_id = !this.paths['_id'] &&
(!this.options.noId && this.options._id) && !_idSubDoc;
if (auto_id) {
addAutoId(this);
}
this.setupTimestamp(this.options.timestamps);
}
/*!
* Create virtual properties with alias field
*/
function aliasFields(schema, paths) {
paths = paths || Object.keys(schema.paths);
for (const path of paths) {
const options = get(schema.paths[path], 'options');
if (options == null) {
continue;
}
const prop = schema.paths[path].path;
const alias = options.alias;
if (!alias) {
continue;
}
if (typeof alias !== 'string') {
throw new Error('Invalid value for alias option on ' + prop + ', got ' + alias);
}
schema.aliases[alias] = prop;
schema.
virtual(alias).
get((function(p) {
return function() {
if (typeof this.get === 'function') {
return this.get(p);
}
return this[p];
};
})(prop)).
set((function(p) {
return function(v) {
return this.set(p, v);
};
})(prop));
}
}
/*!
* Inherit from EventEmitter.
*/
Schema.prototype = Object.create(EventEmitter.prototype);
Schema.prototype.constructor = Schema;
Schema.prototype.instanceOfSchema = true;
/*!
* ignore
*/
Object.defineProperty(Schema.prototype, '$schemaType', {
configurable: false,
enumerable: false,
writable: true
});
/**
* Array of child schemas (from document arrays and single nested subdocs)
* and their corresponding compiled models. Each element of the array is
* an object with 2 properties: `schema` and `model`.
*
* This property is typically only useful for plugin authors and advanced users.
* You do not need to interact with this property at all to use mongoose.
*
* @api public
* @property childSchemas
* @memberOf Schema
* @instance
*/
Object.defineProperty(Schema.prototype, 'childSchemas', {
configurable: false,
enumerable: true,
writable: true
});
/**
* The original object passed to the schema constructor
*
* ####Example:
*
* var schema = new Schema({ a: String }).add({ b: String });
* schema.obj; // { a: String }
*
* @api public
* @property obj
* @memberOf Schema
* @instance
*/
Schema.prototype.obj;
/**
* The paths defined on this schema. The keys are the top-level paths
* in this schema, and the values are instances of the SchemaType class.
*
* ####Example:
* const schema = new Schema({ name: String }, { _id: false });
* schema.paths; // { name: SchemaString { ... } }
*
* schema.add({ age: Number });
* schema.paths; // { name: SchemaString { ... }, age: SchemaNumber { ... } }
*
* @api public
* @property paths
* @memberOf Schema
* @instance
*/
Schema.prototype.paths;
/**
* Schema as a tree
*
* ####Example:
* {
* '_id' : ObjectId
* , 'nested' : {
* 'key' : String
* }
* }
*
* @api private
* @property tree
* @memberOf Schema
* @instance
*/
Schema.prototype.tree;
/**
* Returns a deep copy of the schema
*
* ####Example:
*
* const schema = new Schema({ name: String });
* const clone = schema.clone();
* clone === schema; // false
* clone.path('name'); // SchemaString { ... }
*
* @return {Schema} the cloned schema
* @api public
* @memberOf Schema
* @instance
*/
Schema.prototype.clone = function() {
const s = new Schema({}, this._userProvidedOptions);
s.base = this.base;
s.obj = this.obj;
s.options = utils.clone(this.options);
s.callQueue = this.callQueue.map(function(f) { return f; });
s.methods = utils.clone(this.methods);
s.methodOptions = utils.clone(this.methodOptions);
s.statics = utils.clone(this.statics);
s.query = utils.clone(this.query);
s.plugins = Array.prototype.slice.call(this.plugins);
s._indexes = utils.clone(this._indexes);
s.s.hooks = this.s.hooks.clone();
s.tree = utils.clone(this.tree);
s.paths = utils.clone(this.paths);
s.nested = utils.clone(this.nested);
s.subpaths = utils.clone(this.subpaths);
s.singleNestedPaths = utils.clone(this.singleNestedPaths);
s.childSchemas = gatherChildSchemas(s);
s.virtuals = utils.clone(this.virtuals);
s.$globalPluginsApplied = this.$globalPluginsApplied;
s.$isRootDiscriminator = this.$isRootDiscriminator;
s.$implicitlyCreated = this.$implicitlyCreated;
if (this.discriminatorMapping != null) {
s.discriminatorMapping = Object.assign({}, this.discriminatorMapping);
}
if (this.discriminators != null) {
s.discriminators = Object.assign({}, this.discriminators);
}
s.aliases = Object.assign({}, this.aliases);
// Bubble up `init` for backwards compat
s.on('init', v => this.emit('init', v));
return s;
};
/**
* Returns a new schema that has the picked `paths` from this schema.
*
* This method is analagous to [Lodash's `pick()` function](https://lodash.com/docs/4.17.15#pick) for Mongoose schemas.
*
* ####Example:
*
* const schema = Schema({ name: String, age: Number });
* // Creates a new schema with the same `name` path as `schema`,
* // but no `age` path.
* const newSchema = schema.pick(['name']);
*
* newSchema.path('name'); // SchemaString { ... }
* newSchema.path('age'); // undefined
*
* @param {Array} paths list of paths to pick
* @param {Object} [options] options to pass to the schema constructor. Defaults to `this.options` if not set.
* @return {Schema}
* @api public
*/
Schema.prototype.pick = function(paths, options) {
const newSchema = new Schema({}, options || this.options);
if (!Array.isArray(paths)) {
throw new MongooseError('Schema#pick() only accepts an array argument, ' +
'got "' + typeof paths + '"');
}
for (const path of paths) {
if (this.nested[path]) {
newSchema.add({ [path]: get(this.tree, path) });
} else {
const schematype = this.path(path);
if (schematype == null) {
throw new MongooseError('Path `' + path + '` is not in the schema');
}
newSchema.add({ [path]: schematype });
}
}
return newSchema;
};
/**
* Returns default options for this schema, merged with `options`.
*
* @param {Object} options
* @return {Object}
* @api private
*/
Schema.prototype.defaultOptions = function(options) {
if (options && options.safe === false) {
options.safe = { w: 0 };
}
if (options && options.safe && options.safe.w === 0) {
// if you turn off safe writes, then versioning goes off as well
options.versionKey = false;
}
this._userProvidedOptions = options == null ? {} : utils.clone(options);
const baseOptions = get(this, 'base.options', {});
options = utils.options({
strict: 'strict' in baseOptions ? baseOptions.strict : true,
bufferCommands: true,
capped: false, // { size, max, autoIndexId }
versionKey: '__v',
discriminatorKey: '__t',
minimize: true,
autoIndex: null,
shardKey: null,
read: null,
validateBeforeSave: true,
// the following are only applied at construction time
noId: false, // deprecated, use { _id: false }
_id: true,
noVirtualId: false, // deprecated, use { id: false }
id: true,
typeKey: 'type',
typePojoToMixed: 'typePojoToMixed' in baseOptions ? baseOptions.typePojoToMixed : true
}, utils.clone(options));
if (options.read) {
options.read = readPref(options.read);
}
return options;
};
/**
* Adds key path / schema type pairs to this schema.
*
* ####Example:
*
* const ToySchema = new Schema();
* ToySchema.add({ name: 'string', color: 'string', price: 'number' });
*
* const TurboManSchema = new Schema();
* // You can also `add()` another schema and copy over all paths, virtuals,
* // getters, setters, indexes, methods, and statics.
* TurboManSchema.add(ToySchema).add({ year: Number });
*
* @param {Object|Schema} obj plain object with paths to add, or another schema
* @param {String} [prefix] path to prefix the newly added paths with
* @return {Schema} the Schema instance
* @api public
*/
Schema.prototype.add = function add(obj, prefix) {
if (obj instanceof Schema) {
merge(this, obj);
return this;
}
// Special case: setting top-level `_id` to false should convert to disabling
// the `_id` option. This behavior never worked before 5.4.11 but numerous
// codebases use it (see gh-7516, gh-7512).
if (obj._id === false && prefix == null) {
this.options._id = false;
}
prefix = prefix || '';
const keys = Object.keys(obj);
for (const key of keys) {
const fullPath = prefix + key;
if (obj[key] == null) {
throw new TypeError('Invalid value for schema path `' + fullPath +
'`, got value "' + obj[key] + '"');
}
// Retain `_id: false` but don't set it as a path, re: gh-8274.
if (key === '_id' && obj[key] === false) {
continue;
}
if (obj[key] instanceof VirtualType) {
this.virtual(obj[key]);
continue;
}
if (Array.isArray(obj[key]) && obj[key].length === 1 && obj[key][0] == null) {
throw new TypeError('Invalid value for schema Array path `' + fullPath +
'`, got value "' + obj[key][0] + '"');
}
if (!(utils.isPOJO(obj[key]) || obj[key] instanceof SchemaTypeOptions)) {
// Special-case: Non-options definitely a path so leaf at this node
// Examples: Schema instances, SchemaType instances
if (prefix) {
this.nested[prefix.substr(0, prefix.length - 1)] = true;
}
this.path(prefix + key, obj[key]);
} else if (Object.keys(obj[key]).length < 1) {
// Special-case: {} always interpreted as Mixed path so leaf at this node
if (prefix) {
this.nested[prefix.substr(0, prefix.length - 1)] = true;
}
this.path(fullPath, obj[key]); // mixed type
} else if (!obj[key][this.options.typeKey] || (this.options.typeKey === 'type' && obj[key].type.type)) {
// Special-case: POJO with no bona-fide type key - interpret as tree of deep paths so recurse
// nested object { last: { name: String }}
this.nested[fullPath] = true;
this.add(obj[key], fullPath + '.');
} else {
// There IS a bona-fide type key that may also be a POJO
if (!this.options.typePojoToMixed && utils.isPOJO(obj[key][this.options.typeKey])) {
// If a POJO is the value of a type key, make it a subdocument
if (prefix) {
this.nested[prefix.substr(0, prefix.length - 1)] = true;
}
// Propage `typePojoToMixed` to implicitly created schemas
const opts = { typePojoToMixed: false };
const _schema = new Schema(obj[key][this.options.typeKey], opts);
const schemaWrappedPath = Object.assign({}, obj[key], { type: _schema });
this.path(prefix + key, schemaWrappedPath);
} else {
// Either the type is non-POJO or we interpret it as Mixed anyway
if (prefix) {
this.nested[prefix.substr(0, prefix.length - 1)] = true;
}
this.path(prefix + key, obj[key]);
}
}
}
const addedKeys = Object.keys(obj).
map(key => prefix ? prefix + key : key);
aliasFields(this, addedKeys);
return this;
};
/**
* Reserved document keys.
*
* Keys in this object are names that are rejected in schema declarations
* because they conflict with Mongoose functionality. If you create a schema
* using `new Schema()` with one of these property names, Mongoose will throw
* an error.
*
* - _posts
* - _pres
* - collection
* - emit
* - errors
* - get
* - init
* - isModified
* - isNew
* - listeners
* - modelName
* - on
* - once
* - populated
* - prototype
* - remove
* - removeListener
* - save
* - schema
* - toObject
* - validate
*
* _NOTE:_ Use of these terms as method names is permitted, but play at your own risk, as they may be existing mongoose document methods you are stomping on.
*
* var schema = new Schema(..);
* schema.methods.init = function () {} // potentially breaking
*/
Schema.reserved = Object.create(null);
Schema.prototype.reserved = Schema.reserved;
const reserved = Schema.reserved;
// Core object
reserved['prototype'] =
// EventEmitter
reserved.emit =
reserved.listeners =
reserved.on =
reserved.removeListener =
// document properties and functions
reserved.collection =
reserved.errors =
reserved.get =
reserved.init =
reserved.isModified =
reserved.isNew =
reserved.populated =
reserved.remove =
reserved.save =
reserved.schema =
reserved.toObject =
reserved.validate = 1;
/*!
* Document keys to print warnings for
*/
const warnings = {};
warnings.increment = '`increment` should not be used as a schema path name ' +
'unless you have disabled versioning.';
/**
* Gets/sets schema paths.
*
* Sets a path (if arity 2)
* Gets a path (if arity 1)
*
* ####Example
*
* schema.path('name') // returns a SchemaType
* schema.path('name', Number) // changes the schemaType of `name` to Number
*
* @param {String} path
* @param {Object} constructor
* @api public
*/
Schema.prototype.path = function(path, obj) {
// Convert to '.$' to check subpaths re: gh-6405
const cleanPath = _pathToPositionalSyntax(path);
if (obj === undefined) {
let schematype = _getPath(this, path, cleanPath);
if (schematype != null) {
return schematype;
}
// Look for maps
const mapPath = getMapPath(this, path);
if (mapPath != null) {
return mapPath;
}
// Look if a parent of this path is mixed
schematype = this.hasMixedParent(cleanPath);
if (schematype != null) {
return schematype;
}
// subpaths?
return /\.\d+\.?.*$/.test(path)
? getPositionalPath(this, path)
: undefined;
}
// some path names conflict with document methods
const firstPieceOfPath = path.split('.')[0];
if (reserved[firstPieceOfPath]) {
throw new Error('`' + firstPieceOfPath + '` may not be used as a schema pathname');
}
if (warnings[path]) {
console.log('WARN: ' + warnings[path]);
}
if (typeof obj === 'object' && utils.hasUserDefinedProperty(obj, 'ref')) {
validateRef(obj.ref, path);
}
// update the tree
const subpaths = path.split(/\./);
const last = subpaths.pop();
let branch = this.tree;
let fullPath = '';
for (const sub of subpaths) {
fullPath = fullPath += (fullPath.length > 0 ? '.' : '') + sub;
if (!branch[sub]) {
this.nested[fullPath] = true;
branch[sub] = {};
}
if (typeof branch[sub] !== 'object') {
const msg = 'Cannot set nested path `' + path + '`. '
+ 'Parent path `'
+ fullPath
+ '` already set to type ' + branch[sub].name
+ '.';
throw new Error(msg);
}
branch = branch[sub];
}
branch[last] = utils.clone(obj);
this.paths[path] = this.interpretAsType(path, obj, this.options);
const schemaType = this.paths[path];
if (schemaType.$isSchemaMap) {
// Maps can have arbitrary keys, so `$*` is internal shorthand for "any key"
// The '$' is to imply this path should never be stored in MongoDB so we
// can easily build a regexp out of this path, and '*' to imply "any key."
const mapPath = path + '.$*';
let _mapType = { type: {} };
if (utils.hasUserDefinedProperty(obj, 'of')) {
const isInlineSchema = utils.isPOJO(obj.of) &&
Object.keys(obj.of).length > 0 &&
!utils.hasUserDefinedProperty(obj.of, this.options.typeKey);
_mapType = isInlineSchema ? new Schema(obj.of) : obj.of;
}
this.paths[mapPath] = this.interpretAsType(mapPath,
_mapType, this.options);
schemaType.$__schemaType = this.paths[mapPath];
}
if (schemaType.$isSingleNested) {
for (const key in schemaType.schema.paths) {
this.singleNestedPaths[path + '.' + key] = schemaType.schema.paths[key];
}
for (const key in schemaType.schema.singleNestedPaths) {
this.singleNestedPaths[path + '.' + key] =
schemaType.schema.singleNestedPaths[key];
}
for (const key in schemaType.schema.subpaths) {
this.singleNestedPaths[path + '.' + key] =
schemaType.schema.subpaths[key];
}
Object.defineProperty(schemaType.schema, 'base', {
configurable: true,
enumerable: false,
writable: false,
value: this.base
});
schemaType.caster.base = this.base;
this.childSchemas.push({
schema: schemaType.schema,
model: schemaType.caster
});
} else if (schemaType.$isMongooseDocumentArray) {
Object.defineProperty(schemaType.schema, 'base', {
configurable: true,
enumerable: false,
writable: false,
value: this.base
});
schemaType.casterConstructor.base = this.base;
this.childSchemas.push({
schema: schemaType.schema,
model: schemaType.casterConstructor
});
}
if (schemaType.$isMongooseArray && schemaType.caster instanceof SchemaType) {
let arrayPath = path;
let _schemaType = schemaType;
const toAdd = [];
while (_schemaType.$isMongooseArray) {
arrayPath = arrayPath + '.$';
// Skip arrays of document arrays
if (_schemaType.$isMongooseDocumentArray) {
_schemaType.$embeddedSchemaType._arrayPath = arrayPath;
_schemaType = _schemaType.$embeddedSchemaType.clone();
} else {
_schemaType.caster._arrayPath = arrayPath;
_schemaType = _schemaType.caster.clone();
}
_schemaType.path = arrayPath;
toAdd.push(_schemaType);
}
for (const _schemaType of toAdd) {
this.subpaths[_schemaType.path] = _schemaType;
}
}
if (schemaType.$isMongooseDocumentArray) {
for (const key of Object.keys(schemaType.schema.paths)) {
this.subpaths[path + '.' + key] = schemaType.schema.paths[key];
schemaType.schema.paths[key].$isUnderneathDocArray = true;
}
for (const key of Object.keys(schemaType.schema.subpaths)) {
this.subpaths[path + '.' + key] = schemaType.schema.subpaths[key];
schemaType.schema.subpaths[key].$isUnderneathDocArray = true;
}
for (const key of Object.keys(schemaType.schema.singleNestedPaths)) {
this.subpaths[path + '.' + key] = schemaType.schema.singleNestedPaths[key];
schemaType.schema.singleNestedPaths[key].$isUnderneathDocArray = true;
}
}
return this;
};
/*!
* ignore
*/
function gatherChildSchemas(schema) {
const childSchemas = [];
for (const path of Object.keys(schema.paths)) {
const schematype = schema.paths[path];
if (schematype.$isMongooseDocumentArray || schematype.$isSingleNested) {
childSchemas.push({ schema: schematype.schema, model: schematype.caster });
}
}
return childSchemas;
}
/*!
* ignore
*/
function _getPath(schema, path, cleanPath) {
if (schema.paths.hasOwnProperty(path)) {
return schema.paths[path];
}
if (schema.subpaths.hasOwnProperty(cleanPath)) {
return schema.subpaths[cleanPath];
}
if (schema.singleNestedPaths.hasOwnProperty(cleanPath)) {
return schema.singleNestedPaths[cleanPath];
}
return null;
}
/*!
* ignore
*/
function _pathToPositionalSyntax(path) {
if (!/\.\d+/.test(path)) {
return path;
}
return path.replace(/\.\d+\./g, '.$.').replace(/\.\d+$/, '.$');
}
/*!
* ignore
*/
function getMapPath(schema, path) {
for (const _path of Object.keys(schema.paths)) {
if (!_path.includes('.$*')) {
continue;
}
const re = new RegExp('^' + _path.replace(/\.\$\*/g, '\\.[^.]+') + '$');
if (re.test(path)) {
return schema.paths[_path];
}
}
return null;
}
/**
* The Mongoose instance this schema is associated with
*
* @property base
* @api private
*/
Object.defineProperty(Schema.prototype, 'base', {
configurable: true,
enumerable: false,
writable: true,
value: null
});
/**
* Converts type arguments into Mongoose Types.
*
* @param {String} path
* @param {Object} obj constructor
* @api private
*/
Schema.prototype.interpretAsType = function(path, obj, options) {
if (obj instanceof SchemaType) {
return obj;
}
// If this schema has an associated Mongoose object, use the Mongoose object's
// copy of SchemaTypes re: gh-7158 gh-6933
const MongooseTypes = this.base != null ? this.base.Schema.Types : Schema.Types;
if (!utils.isPOJO(obj) && !(obj instanceof SchemaTypeOptions)) {
const constructorName = utils.getFunctionName(obj.constructor);
if (constructorName !== 'Object') {
const oldObj = obj;
obj = {};
obj[options.typeKey] = oldObj;
}
}
// Get the type making sure to allow keys named "type"
// and default to mixed if not specified.
// { type: { type: String, default: 'freshcut' } }
let type = obj[options.typeKey] && (options.typeKey !== 'type' || !obj.type.type)
? obj[options.typeKey]
: {};
let name;
if (utils.isPOJO(type) || type === 'mixed') {
return new MongooseTypes.Mixed(path, obj);
}
if (Array.isArray(type) || Array === type || type === 'array') {
// if it was specified through { type } look for `cast`
let cast = (Array === type || type === 'array')
? obj.cast
: type[0];
if (cast && cast.instanceOfSchema) {
return new MongooseTypes.DocumentArray(path, cast, obj);
}
if (cast &&
cast[options.typeKey] &&
cast[options.typeKey].instanceOfSchema) {
return new MongooseTypes.DocumentArray(path, cast[options.typeKey], obj, cast);
}
if (Array.isArray(cast)) {
return new MongooseTypes.Array(path, this.interpretAsType(path, cast, options), obj);
}
if (typeof cast === 'string') {
cast = MongooseTypes[cast.charAt(0).toUpperCase() + cast.substring(1)];
} else if (cast && (!cast[options.typeKey] || (options.typeKey === 'type' && cast.type.type))
&& utils.isPOJO(cast)) {
if (Object.keys(cast).length) {
// The `minimize` and `typeKey` options propagate to child schemas
// declared inline, like `{ arr: [{ val: { $type: String } }] }`.
// See gh-3560
const childSchemaOptions = { minimize: options.minimize };
if (options.typeKey) {
childSchemaOptions.typeKey = options.typeKey;
}
// propagate 'strict' option to child schema
if (options.hasOwnProperty('strict')) {
childSchemaOptions.strict = options.strict;
}
if (options.hasOwnProperty('typePojoToMixed')) {
childSchemaOptions.typePojoToMixed = options.typePojoToMixed;
}
const childSchema = new Schema(cast, childSchemaOptions);
childSchema.$implicitlyCreated = true;
return new MongooseTypes.DocumentArray(path, childSchema, obj);
} else {
// Special case: empty object becomes mixed
return new MongooseTypes.Array(path, MongooseTypes.Mixed, obj);
}
}
if (cast) {
type = cast[options.typeKey] && (options.typeKey !== 'type' || !cast.type.type)
? cast[options.typeKey]
: cast;
name = typeof type === 'string'
? type
: type.schemaName || utils.getFunctionName(type);
if (!MongooseTypes.hasOwnProperty(name)) {
throw new TypeError('Invalid schema configuration: ' +
`\`${name}\` is not a valid type within the array \`${path}\`.` +
'See http://bit.ly/mongoose-schematypes for a list of valid schema types.');
}
}
return new MongooseTypes.Array(path, cast || MongooseTypes.Mixed, obj, options);
}
if (type && type.instanceOfSchema) {
return new MongooseTypes.Embedded(type, path, obj);
}
if (Buffer.isBuffer(type)) {
name = 'Buffer';
} else if (typeof type === 'function' || typeof type === 'object') {
name = type.schemaName || utils.getFunctionName(type);
} else {
name = type == null ? '' + type : type.toString();
}
if (name) {
name = name.charAt(0).toUpperCase() + name.substring(1);
}
// Special case re: gh-7049 because the bson `ObjectID` class' capitalization
// doesn't line up with Mongoose's.
if (name === 'ObjectID') {
name = 'ObjectId';
}
if (MongooseTypes[name] == null) {
throw new TypeError(`Invalid schema configuration: \`${name}\` is not ` +
`a valid type at path \`${path}\`. See ` +
'http://bit.ly/mongoose-schematypes for a list of valid schema types.');
}
return new MongooseTypes[name](path, obj);
};
/**
* Iterates the schemas paths similar to Array#forEach.
*
* The callback is passed the pathname and the schemaType instance.
*
* ####Example:
*
* const userSchema = new Schema({ name: String, registeredAt: Date });
* userSchema.eachPath((pathname, schematype) => {
* // Prints twice:
* // name SchemaString { ... }
* // registeredAt SchemaDate { ... }
* console.log(pathname, schematype);
* });
*
* @param {Function} fn callback function
* @return {Schema} this
* @api public
*/
Schema.prototype.eachPath = function(fn) {
const keys = Object.keys(this.paths);
const len = keys.length;
for (let i = 0; i < len; ++i) {
fn(keys[i], this.paths[keys[i]]);
}
return this;
};
/**
* Returns an Array of path strings that are required by this schema.
*
* ####Example:
* const s = new Schema({
* name: { type: String, required: true },
* age: { type: String, required: true },
* notes: String
* });
* s.requiredPaths(); // [ 'age', 'name' ]
*
* @api public
* @param {Boolean} invalidate refresh the cache
* @return {Array}
*/
Schema.prototype.requiredPaths = function requiredPaths(invalidate) {
if (this._requiredpaths && !invalidate) {
return this._requiredpaths;
}
const paths = Object.keys(this.paths);
let i = paths.length;
const ret = [];
while (i--) {
const path = paths[i];
if (this.paths[path].isRequired) {
ret.push(path);
}
}
this._requiredpaths = ret;
return this._requiredpaths;
};
/**
* Returns indexes from fields and schema-level indexes (cached).
*
* @api private
* @return {Array}
*/
Schema.prototype.indexedPaths = function indexedPaths() {
if (this._indexedpaths) {
return this._indexedpaths;
}
this._indexedpaths = this.indexes();
return this._indexedpaths;
};
/**
* Returns the pathType of `path` for this schema.
*
* Given a path, returns whether it is a real, virtual, nested, or ad-hoc/undefined path.
*
* ####Example:
* const s = new Schema({ name: String, nested: { foo: String } });
* s.virtual('foo').get(() => 42);
* s.pathType('name'); // "real"
* s.pathType('nested'); // "nested"
* s.pathType('foo'); // "virtual"
* s.pathType('fail'); // "adhocOrUndefined"
*
* @param {String} path
* @return {String}
* @api public
*/
Schema.prototype.pathType = function(path) {
// Convert to '.$' to check subpaths re: gh-6405
const cleanPath = _pathToPositionalSyntax(path);
if (this.paths.hasOwnProperty(path)) {
return 'real';
}
if (this.virtuals.hasOwnProperty(path)) {
return 'virtual';
}
if (this.nested.hasOwnProperty(path)) {
return 'nested';
}
if (this.subpaths.hasOwnProperty(cleanPath) || this.subpaths.hasOwnProperty(path)) {
return 'real';
}
if (this.singleNestedPaths.hasOwnProperty(cleanPath) || this.singleNestedPaths.hasOwnProperty(path)) {
return 'real';
}
// Look for maps
const mapPath = getMapPath(this, path);
if (mapPath != null) {
return 'real';
}
if (/\.\d+\.|\.\d+$/.test(path)) {
return getPositionalPathType(this, path);
}
return 'adhocOrUndefined';
};
/**
* Returns true iff this path is a child of a mixed schema.
*
* @param {String} path
* @return {Boolean}
* @api private
*/
Schema.prototype.hasMixedParent = function(path) {
const subpaths = path.split(/\./g);
path = '';
for (let i = 0; i < subpaths.length; ++i) {
path = i > 0 ? path + '.' + subpaths[i] : subpaths[i];
if (path in this.paths &&
this.paths[path] instanceof MongooseTypes.Mixed) {
return this.paths[path];
}
}
return null;
};
/**
* Setup updatedAt and createdAt timestamps to documents if enabled
*
* @param {Boolean|Object} timestamps timestamps options
* @api private
*/
Schema.prototype.setupTimestamp = function(timestamps) {
const childHasTimestamp = this.childSchemas.find(withTimestamp);
function withTimestamp(s) {
const ts = s.schema.options.timestamps;
return !!ts;
}
if (!timestamps && !childHasTimestamp) {
return;
}
const createdAt = handleTimestampOption(timestamps, 'createdAt');
const updatedAt = handleTimestampOption(timestamps, 'updatedAt');
const currentTime = timestamps != null && timestamps.hasOwnProperty('currentTime') ?
timestamps.currentTime :
null;
const schemaAdditions = {};
this.$timestamps = { createdAt: createdAt, updatedAt: updatedAt };
if (updatedAt && !this.paths[updatedAt]) {
schemaAdditions[updatedAt] = Date;
}
if (createdAt && !this.paths[createdAt]) {
schemaAdditions[createdAt] = Date;
}
this.add(schemaAdditions);
this.pre('save', function(next) {
const timestampOption = get(this, '$__.saveOptions.timestamps');
if (timestampOption === false) {
return next();
}
const skipUpdatedAt = timestampOption != null && timestampOption.updatedAt === false;
const skipCreatedAt = timestampOption != null && timestampOption.createdAt === false;
const defaultTimestamp = currentTime != null ?
currentTime() :
(this.ownerDocument ? this.ownerDocument() : this).constructor.base.now();
const auto_id = this._id && this._id.auto;
if (!skipCreatedAt && createdAt && !this.get(createdAt) && this.isSelected(createdAt)) {
this.set(createdAt, auto_id ? this._id.getTimestamp() : defaultTimestamp);
}
if (!skipUpdatedAt && updatedAt && (this.isNew || this.isModified())) {
let ts = defaultTimestamp;
if (this.isNew) {
if (createdAt != null) {
ts = this.$__getValue(createdAt);
} else if (auto_id) {
ts = this._id.getTimestamp();
}
}
this.set(updatedAt, ts);
}
next();
});
this.methods.initializeTimestamps = function() {
const ts = currentTime != null ?
currentTime() :
this.constructor.base.now();
if (createdAt && !this.get(createdAt)) {
this.set(createdAt, ts);
}
if (updatedAt && !this.get(updatedAt)) {
this.set(updatedAt, ts);
}
return this;
};
_setTimestampsOnUpdate[symbols.builtInMiddleware] = true;
const opts = { query: true, model: false };
this.pre('findOneAndUpdate', opts, _setTimestampsOnUpdate);
this.pre('replaceOne', opts, _setTimestampsOnUpdate);
this.pre('update', opts, _setTimestampsOnUpdate);
this.pre('updateOne', opts, _setTimestampsOnUpdate);
this.pre('updateMany', opts, _setTimestampsOnUpdate);
function _setTimestampsOnUpdate(next) {
const now = currentTime != null ?
currentTime() :
this.model.base.now();
applyTimestampsToUpdate(now, createdAt, updatedAt, this.getUpdate(),
this.options, this.schema);
applyTimestampsToChildren(now, this.getUpdate(), this.model.schema);
next();
}
};
/*!
* ignore. Deprecated re: #6405
*/
function getPositionalPathType(self, path) {
const subpaths = path.split(/\.(\d+)\.|\.(\d+)$/).filter(Boolean);
if (subpaths.length < 2) {
return self.paths.hasOwnProperty(subpaths[0]) ?
self.paths[subpaths[0]] :
'adhocOrUndefined';
}
let val = self.path(subpaths[0]);
let isNested = false;
if (!val) {
return 'adhocOrUndefined';
}
const last = subpaths.length - 1;
for (let i = 1; i < subpaths.length; ++i) {
isNested = false;
const subpath = subpaths[i];
if (i === last && val && !/\D/.test(subpath)) {
if (val.$isMongooseDocumentArray) {
val = val.$embeddedSchemaType;
} else if (val instanceof MongooseTypes.Array) {
// StringSchema, NumberSchema, etc
val = val.caster;
} else {
val = undefined;
}
break;
}
// ignore if its just a position segment: path.0.subpath
if (!/\D/.test(subpath)) {
// Nested array
if (val instanceof MongooseTypes.Array && i !== last) {
val = val.caster;
}
continue;
}
if (!(val && val.schema)) {
val = undefined;
break;
}
const type = val.schema.pathType(subpath);
isNested = (type === 'nested');
val = val.schema.path(subpath);
}
self.subpaths[path] = val;
if (val) {
return 'real';
}
if (isNested) {
return 'nested';
}
return 'adhocOrUndefined';
}
/*!
* ignore
*/
function getPositionalPath(self, path) {
getPositionalPathType(self, path);
return self.subpaths[path];
}
/**
* Adds a method call to the queue.
*
* ####Example:
*
* schema.methods.print = function() { console.log(this); };
* schema.queue('print', []); // Print the doc every one is instantiated
*
* const Model = mongoose.model('Test', schema);
* new Model({ name: 'test' }); // Prints '{"_id": ..., "name": "test" }'
*
* @param {String} name name of the document method to call later
* @param {Array} args arguments to pass to the method
* @api public
*/
Schema.prototype.queue = function(name, args) {
this.callQueue.push([name, args]);
return this;
};
/**
* Defines a pre hook for the document.
*
* ####Example
*
* var toySchema = new Schema({ name: String, created: Date });
*
* toySchema.pre('save', function(next) {
* if (!this.created) this.created = new Date;
* next();
* });
*
* toySchema.pre('validate', function(next) {
* if (this.name !== 'Woody') this.name = 'Woody';
* next();
* });
*
* // Equivalent to calling `pre()` on `find`, `findOne`, `findOneAndUpdate`.
* toySchema.pre(/^find/, function(next) {
* console.log(this.getFilter());
* });
*
* // Equivalent to calling `pre()` on `updateOne`, `findOneAndUpdate`.
* toySchema.pre(['updateOne', 'findOneAndUpdate'], function(next) {
* console.log(this.getFilter());
* });
*
* toySchema.pre('deleteOne', function() {
* // Runs when you call `Toy.deleteOne()`
* });
*
* toySchema.pre('deleteOne', { document: true }, function() {
* // Runs when you call `doc.deleteOne()`
* });
*
* @param {String|RegExp} The method name or regular expression to match method name
* @param {Object} [options]
* @param {Boolean} [options.document] If `name` is a hook for both document and query middleware, set to `true` to run on document middleware. For example, set `options.document` to `true` to apply this hook to `Document#deleteOne()` rather than `Query#deleteOne()`.
* @param {Boolean} [options.query] If `name` is a hook for both document and query middleware, set to `true` to run on query middleware.
* @param {Function} callback
* @api public
*/
Schema.prototype.pre = function(name) {
if (name instanceof RegExp) {
const remainingArgs = Array.prototype.slice.call(arguments, 1);
for (const fn of hookNames) {
if (name.test(fn)) {
this.pre.apply(this, [fn].concat(remainingArgs));
}
}
return this;
}
if (Array.isArray(name)) {
const remainingArgs = Array.prototype.slice.call(arguments, 1);
for (const el of name) {
this.pre.apply(this, [el].concat(remainingArgs));
}
return this;
}
this.s.hooks.pre.apply(this.s.hooks, arguments);
return this;
};
/**
* Defines a post hook for the document
*
* var schema = new Schema(..);
* schema.post('save', function (doc) {
* console.log('this fired after a document was saved');
* });
*
* schema.post('find', function(docs) {
* console.log('this fired after you ran a find query');
* });
*
* schema.post(/Many$/, function(res) {
* console.log('this fired after you ran `updateMany()` or `deleteMany()`);
* });
*
* var Model = mongoose.model('Model', schema);
*
* var m = new Model(..);
* m.save(function(err) {
* console.log('this fires after the `post` hook');
* });
*
* m.find(function(err, docs) {
* console.log('this fires after the post find hook');
* });
*
* @param {String|RegExp} The method name or regular expression to match method name
* @param {Object} [options]
* @param {Boolean} [options.document] If `name` is a hook for both document and query middleware, set to `true` to run on document middleware.
* @param {Boolean} [options.query] If `name` is a hook for both document and query middleware, set to `true` to run on query middleware.
* @param {Function} fn callback
* @see middleware http://mongoosejs.com/docs/middleware.html
* @see kareem http://npmjs.org/package/kareem
* @api public
*/
Schema.prototype.post = function(name) {
if (name instanceof RegExp) {
const remainingArgs = Array.prototype.slice.call(arguments, 1);
for (const fn of hookNames) {
if (name.test(fn)) {
this.post.apply(this, [fn].concat(remainingArgs));
}
}
return this;
}
if (Array.isArray(name)) {
const remainingArgs = Array.prototype.slice.call(arguments, 1);
for (const el of name) {
this.post.apply(this, [el].concat(remainingArgs));
}
return this;
}
this.s.hooks.post.apply(this.s.hooks, arguments);
return this;
};
/**
* Registers a plugin for this schema.
*
* ####Example:
*
* const s = new Schema({ name: String });
* s.plugin(schema => console.log(schema.path('name').path));
* mongoose.model('Test', s); // Prints 'name'
*
* @param {Function} plugin callback
* @param {Object} [opts]
* @see plugins
* @api public
*/
Schema.prototype.plugin = function(fn, opts) {
if (typeof fn !== 'function') {
throw new Error('First param to `schema.plugin()` must be a function, ' +
'got "' + (typeof fn) + '"');
}
if (opts && opts.deduplicate) {
for (const plugin of this.plugins) {
if (plugin.fn === fn) {
return this;
}
}
}
this.plugins.push({ fn: fn, opts: opts });
fn(this, opts);
return this;
};
/**
* Adds an instance method to documents constructed from Models compiled from this schema.
*
* ####Example
*
* var schema = kittySchema = new Schema(..);
*
* schema.method('meow', function () {
* console.log('meeeeeoooooooooooow');
* })
*
* var Kitty = mongoose.model('Kitty', schema);
*
* var fizz = new Kitty;
* fizz.meow(); // meeeeeooooooooooooow
*
* If a hash of name/fn pairs is passed as the only argument, each name/fn pair will be added as methods.
*
* schema.method({
* purr: function () {}
* , scratch: function () {}
* });
*
* // later
* fizz.purr();
* fizz.scratch();
*
* NOTE: `Schema.method()` adds instance methods to the `Schema.methods` object. You can also add instance methods directly to the `Schema.methods` object as seen in the [guide](./guide.html#methods)
*
* @param {String|Object} method name
* @param {Function} [fn]
* @api public
*/
Schema.prototype.method = function(name, fn, options) {
if (typeof name !== 'string') {
for (const i in name) {
this.methods[i] = name[i];
this.methodOptions[i] = utils.clone(options);
}
} else {
this.methods[name] = fn;
this.methodOptions[name] = utils.clone(options);
}
return this;
};
/**
* Adds static "class" methods to Models compiled from this schema.
*
* ####Example
*
* const schema = new Schema(..);
* // Equivalent to `schema.statics.findByName = function(name) {}`;
* schema.static('findByName', function(name) {
* return this.find({ name: name });
* });
*
* const Drink = mongoose.model('Drink', schema);
* await Drink.findByName('LaCroix');
*
* If a hash of name/fn pairs is passed as the only argument, each name/fn pair will be added as statics.
*
* @param {String|Object} name
* @param {Function} [fn]
* @api public
* @see Statics /docs/guide.html#statics
*/
Schema.prototype.static = function(name, fn) {
if (typeof name !== 'string') {
for (const i in name) {
this.statics[i] = name[i];
}
} else {
this.statics[name] = fn;
}
return this;
};
/**
* Defines an index (most likely compound) for this schema.
*
* ####Example
*
* schema.index({ first: 1, last: -1 })
*
* @param {Object} fields
* @param {Object} [options] Options to pass to [MongoDB driver's `createIndex()` function](http://mongodb.github.io/node-mongodb-native/2.0/api/Collection.html#createIndex)
* @param {String} [options.expires=null] Mongoose-specific syntactic sugar, uses [ms](https://www.npmjs.com/package/ms) to convert `expires` option into seconds for the `expireAfterSeconds` in the above link.
* @api public
*/
Schema.prototype.index = function(fields, options) {
fields || (fields = {});
options || (options = {});
if (options.expires) {
utils.expires(options);
}
this._indexes.push([fields, options]);
return this;
};
/**
* Sets/gets a schema option.
*
* ####Example
*
* schema.set('strict'); // 'true' by default
* schema.set('strict', false); // Sets 'strict' to false
* schema.set('strict'); // 'false'
*
* @param {String} key option name
* @param {Object} [value] if not passed, the current option value is returned
* @see Schema ./
* @api public
*/
Schema.prototype.set = function(key, value, _tags) {
if (arguments.length === 1) {
return this.options[key];
}
switch (key) {
case 'read':
this.options[key] = readPref(value, _tags);
this._userProvidedOptions[key] = this.options[key];
break;
case 'safe':
setSafe(this.options, value);
this._userProvidedOptions[key] = this.options[key];
break;
case 'timestamps':
this.setupTimestamp(value);
this.options[key] = value;
this._userProvidedOptions[key] = this.options[key];
break;
default:
this.options[key] = value;
this._userProvidedOptions[key] = this.options[key];
break;
}
return this;
};
/*!
* ignore
*/
const safeDeprecationWarning = 'Mongoose: The `safe` option for schemas is ' +
'deprecated. Use the `writeConcern` option instead: ' +
'http://bit.ly/mongoose-write-concern';
const setSafe = util.deprecate(function setSafe(options, value) {
options.safe = value === false ?
{ w: 0 } :
value;
}, safeDeprecationWarning);
/**
* Gets a schema option.
*
* ####Example:
*
* schema.get('strict'); // true
* schema.set('strict', false);
* schema.get('strict'); // false
*
* @param {String} key option name
* @api public
* @return {Any} the option's value
*/
Schema.prototype.get = function(key) {
return this.options[key];
};
/**
* The allowed index types
*
* @receiver Schema
* @static indexTypes
* @api public
*/
const indexTypes = '2d 2dsphere hashed text'.split(' ');
Object.defineProperty(Schema, 'indexTypes', {
get: function() {
return indexTypes;
},
set: function() {
throw new Error('Cannot overwrite Schema.indexTypes');
}
});
/**
* Returns a list of indexes that this schema declares, via `schema.index()`
* or by `index: true` in a path's options.
*
* ####Example:
*
* const userSchema = new Schema({
* email: { type: String, required: true, unique: true },
* registeredAt: { type: Date, index: true }
* });
*
* // [ [ { email: 1 }, { unique: true, background: true } ],
* // [ { registeredAt: 1 }, { background: true } ] ]
* userSchema.indexes();
*
* @api public
* @return {Array} list of indexes defined in the schema
*/
Schema.prototype.indexes = function() {
return getIndexes(this);
};
/**
* Creates a virtual type with the given name.
*
* @param {String} name
* @param {Object} [options]
* @param {String|Model} [options.ref] model name or model instance. Marks this as a [populate virtual](populate.html#populate-virtuals).
* @param {String|Function} [options.localField] Required for populate virtuals. See [populate virtual docs](populate.html#populate-virtuals) for more information.
* @param {String|Function} [options.foreignField] Required for populate virtuals. See [populate virtual docs](populate.html#populate-virtuals) for more information.
* @param {Boolean|Function} [options.justOne=false] Only works with populate virtuals. If [truthy](https://masteringjs.io/tutorials/fundamentals/truthy), will be a single doc or `null`. Otherwise, the populate virtual will be an array.
* @param {Boolean} [options.count=false] Only works with populate virtuals. If [truthy](https://masteringjs.io/tutorials/fundamentals/truthy), this populate virtual will contain the number of documents rather than the documents themselves when you `populate()`.
* @return {VirtualType}
*/
Schema.prototype.virtual = function(name, options) {
if (name instanceof VirtualType) {
return this.virtual(name.path, name.options);
}
options = new VirtualOptions(options);
if (utils.hasUserDefinedProperty(options, ['ref', 'refPath'])) {
if (options.localField == null) {
throw new Error('Reference virtuals require `localField` option');
}
if (options.foreignField == null) {
throw new Error('Reference virtuals require `foreignField` option');
}
this.pre('init', function(obj) {
if (mpath.has(name, obj)) {
const _v = mpath.get(name, obj);
if (!this.$$populatedVirtuals) {
this.$$populatedVirtuals = {};
}
if (options.justOne || options.count) {
this.$$populatedVirtuals[name] = Array.isArray(_v) ?
_v[0] :
_v;
} else {
this.$$populatedVirtuals[name] = Array.isArray(_v) ?
_v :
_v == null ? [] : [_v];
}
mpath.unset(name, obj);
}
});
const virtual = this.virtual(name);
virtual.options = options;
return virtual.
get(function(_v) {
if (this.$$populatedVirtuals &&
this.$$populatedVirtuals.hasOwnProperty(name)) {
return this.$$populatedVirtuals[name];
}
if (_v == null) return undefined;
return _v;
}).
set(function(_v) {
if (!this.$$populatedVirtuals) {
this.$$populatedVirtuals = {};
}
if (options.justOne || options.count) {
this.$$populatedVirtuals[name] = Array.isArray(_v) ?
_v[0] :
_v;
if (typeof this.$$populatedVirtuals[name] !== 'object') {
this.$$populatedVirtuals[name] = options.count ? _v : null;
}
} else {
this.$$populatedVirtuals[name] = Array.isArray(_v) ?
_v :
_v == null ? [] : [_v];
this.$$populatedVirtuals[name] = this.$$populatedVirtuals[name].filter(function(doc) {
return doc && typeof doc === 'object';
});
}
});
}
const virtuals = this.virtuals;
const parts = name.split('.');
if (this.pathType(name) === 'real') {
throw new Error('Virtual path "' + name + '"' +
' conflicts with a real path in the schema');
}
virtuals[name] = parts.reduce(function(mem, part, i) {
mem[part] || (mem[part] = (i === parts.length - 1)
? new VirtualType(options, name)
: {});
return mem[part];
}, this.tree);
// Workaround for gh-8198: if virtual is under document array, make a fake
// virtual. See gh-8210
let cur = parts[0];
for (let i = 0; i < parts.length - 1; ++i) {
if (this.paths[cur] != null && this.paths[cur].$isMongooseDocumentArray) {
const remnant = parts.slice(i + 1).join('.');
const v = this.paths[cur].schema.virtual(remnant);
v.get((v, virtual, doc) => {
const parent = doc.__parentArray[arrayParentSymbol];
const path = cur + '.' + doc.__index + '.' + remnant;
return parent.get(path);
});
break;
}
cur += '.' + parts[i + 1];
}
return virtuals[name];
};
/**
* Returns the virtual type with the given `name`.
*
* @param {String} name
* @return {VirtualType}
*/
Schema.prototype.virtualpath = function(name) {
return this.virtuals.hasOwnProperty(name) ? this.virtuals[name] : null;
};
/**
* Removes the given `path` (or [`paths`]).
*
* ####Example:
*
* const schema = new Schema({ name: String, age: Number });
* schema.remove('name');
* schema.path('name'); // Undefined
* schema.path('age'); // SchemaNumber { ... }
*
* @param {String|Array} path
* @return {Schema} the Schema instance
* @api public
*/
Schema.prototype.remove = function(path) {
if (typeof path === 'string') {
path = [path];
}
if (Array.isArray(path)) {
path.forEach(function(name) {
if (this.path(name) == null && !this.nested[name]) {
return;
}
if (this.nested[name]) {
const allKeys = Object.keys(this.paths).
concat(Object.keys(this.nested));
for (const path of allKeys) {
if (path.startsWith(name + '.')) {
delete this.paths[path];
delete this.nested[path];
_deletePath(this, path);
}
}
delete this.nested[name];
_deletePath(this, name);
return;
}
delete this.paths[name];
_deletePath(this, name);
}, this);
}
return this;
};
/*!
* ignore
*/
function _deletePath(schema, name) {
const pieces = name.split('.');
const last = pieces.pop();
let branch = schema.tree;
for (const piece of pieces) {
branch = branch[piece];
}
delete branch[last];
}
/**
* Loads an ES6 class into a schema. Maps [setters](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/set) + [getters](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/get), [static methods](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/static),
* and [instance methods](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes#Class_body_and_method_definitions)
* to schema [virtuals](http://mongoosejs.com/docs/guide.html#virtuals),
* [statics](http://mongoosejs.com/docs/guide.html#statics), and
* [methods](http://mongoosejs.com/docs/guide.html#methods).
*
* ####Example:
*
* ```javascript
* const md5 = require('md5');
* const userSchema = new Schema({ email: String });
* class UserClass {
* // `gravatarImage` becomes a virtual
* get gravatarImage() {
* const hash = md5(this.email.toLowerCase());
* return `https://www.gravatar.com/avatar/${hash}`;
* }
*
* // `getProfileUrl()` becomes a document method
* getProfileUrl() {
* return `https://mysite.com/${this.email}`;
* }
*
* // `findByEmail()` becomes a static
* static findByEmail(email) {
* return this.findOne({ email });
* }
* }
*
* // `schema` will now have a `gravatarImage` virtual, a `getProfileUrl()` method,
* // and a `findByEmail()` static
* userSchema.loadClass(UserClass);
* ```
*
* @param {Function} model
* @param {Boolean} [virtualsOnly] if truthy, only pulls virtuals from the class, not methods or statics
*/
Schema.prototype.loadClass = function(model, virtualsOnly) {
if (model === Object.prototype ||
model === Function.prototype ||
model.prototype.hasOwnProperty('$isMongooseModelPrototype')) {
return this;
}
this.loadClass(Object.getPrototypeOf(model));
// Add static methods
if (!virtualsOnly) {
Object.getOwnPropertyNames(model).forEach(function(name) {
if (name.match(/^(length|name|prototype)$/)) {
return;
}
const method = Object.getOwnPropertyDescriptor(model, name);
if (typeof method.value === 'function') {
this.static(name, method.value);
}
}, this);
}
// Add methods and virtuals
Object.getOwnPropertyNames(model.prototype).forEach(function(name) {
if (name.match(/^(constructor)$/)) {
return;
}
const method = Object.getOwnPropertyDescriptor(model.prototype, name);
if (!virtualsOnly) {
if (typeof method.value === 'function') {
this.method(name, method.value);
}
}
if (typeof method.get === 'function') {
this.virtual(name).get(method.get);
}
if (typeof method.set === 'function') {
this.virtual(name).set(method.set);
}
}, this);
return this;
};
/*!
* ignore
*/
Schema.prototype._getSchema = function(path) {
const _this = this;
const pathschema = _this.path(path);
const resultPath = [];
if (pathschema) {
pathschema.$fullPath = path;
return pathschema;
}
function search(parts, schema) {
let p = parts.length + 1;
let foundschema;
let trypath;
while (p--) {
trypath = parts.slice(0, p).join('.');
foundschema = schema.path(trypath);
if (foundschema) {
resultPath.push(trypath);
if (foundschema.caster) {
// array of Mixed?
if (foundschema.caster instanceof MongooseTypes.Mixed) {
foundschema.caster.$fullPath = resultPath.join('.');
return foundschema.caster;
}
// Now that we found the array, we need to check if there
// are remaining document paths to look up for casting.
// Also we need to handle array.$.path since schema.path
// doesn't work for that.
// If there is no foundschema.schema we are dealing with
// a path like array.$
if (p !== parts.length && foundschema.schema) {
let ret;
if (parts[p] === '$' || isArrayFilter(parts[p])) {
if (p + 1 === parts.length) {
// comments.$
return foundschema;
}
// comments.$.comments.$.title
ret = search(parts.slice(p + 1), foundschema.schema);
if (ret) {
ret.$isUnderneathDocArray = ret.$isUnderneathDocArray ||
!foundschema.schema.$isSingleNested;
}
return ret;
}
// this is the last path of the selector
ret = search(parts.slice(p), foundschema.schema);
if (ret) {
ret.$isUnderneathDocArray = ret.$isUnderneathDocArray ||
!foundschema.schema.$isSingleNested;
}
return ret;
}
}
foundschema.$fullPath = resultPath.join('.');
return foundschema;
}
}
}
// look for arrays
const parts = path.split('.');
for (let i = 0; i < parts.length; ++i) {
if (parts[i] === '$' || isArrayFilter(parts[i])) {
// Re: gh-5628, because `schema.path()` doesn't take $ into account.
parts[i] = '0';
}
}
return search(parts, _this);
};
/*!
* ignore
*/
Schema.prototype._getPathType = function(path) {
const _this = this;
const pathschema = _this.path(path);
if (pathschema) {
return 'real';
}
function search(parts, schema) {
let p = parts.length + 1,
foundschema,
trypath;
while (p--) {
trypath = parts.slice(0, p).join('.');
foundschema = schema.path(trypath);
if (foundschema) {
if (foundschema.caster) {
// array of Mixed?
if (foundschema.caster instanceof MongooseTypes.Mixed) {
return { schema: foundschema, pathType: 'mixed' };
}
// Now that we found the array, we need to check if there
// are remaining document paths to look up for casting.
// Also we need to handle array.$.path since schema.path
// doesn't work for that.
// If there is no foundschema.schema we are dealing with
// a path like array.$
if (p !== parts.length && foundschema.schema) {
if (parts[p] === '$' || isArrayFilter(parts[p])) {
if (p === parts.length - 1) {
return { schema: foundschema, pathType: 'nested' };
}
// comments.$.comments.$.title
return search(parts.slice(p + 1), foundschema.schema);
}
// this is the last path of the selector
return search(parts.slice(p), foundschema.schema);
}
return {
schema: foundschema,
pathType: foundschema.$isSingleNested ? 'nested' : 'array'
};
}
return { schema: foundschema, pathType: 'real' };
} else if (p === parts.length && schema.nested[trypath]) {
return { schema: schema, pathType: 'nested' };
}
}
return { schema: foundschema || schema, pathType: 'undefined' };
}
// look for arrays
return search(path.split('.'), _this);
};
/*!
* ignore
*/
function isArrayFilter(piece) {
return piece.startsWith('$[') && piece.endsWith(']');
}
/*!
* Module exports.
*/
module.exports = exports = Schema;
// require down here because of reference issues
/**
* The various built-in Mongoose Schema Types.
*
* ####Example:
*
* var mongoose = require('mongoose');
* var ObjectId = mongoose.Schema.Types.ObjectId;
*
* ####Types:
*
* - [String](#schema-string-js)
* - [Number](#schema-number-js)
* - [Boolean](#schema-boolean-js) | Bool
* - [Array](#schema-array-js)
* - [Buffer](#schema-buffer-js)
* - [Date](#schema-date-js)
* - [ObjectId](#schema-objectid-js) | Oid
* - [Mixed](#schema-mixed-js)
*
* Using this exposed access to the `Mixed` SchemaType, we can use them in our schema.
*
* var Mixed = mongoose.Schema.Types.Mixed;
* new mongoose.Schema({ _user: Mixed })
*
* @api public
*/
Schema.Types = MongooseTypes = require('./schema/index');
/*!
* ignore
*/
exports.ObjectId = MongooseTypes.ObjectId;