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107 lines
2.5 KiB
107 lines
2.5 KiB
5 years ago
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'use strict';
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/*!
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* Module dependencies.
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*/
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const Binary = require('../driver').get().Binary;
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const Decimal128 = require('../types/decimal128');
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const ObjectId = require('../types/objectid');
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const isMongooseObject = require('./isMongooseObject');
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exports.flatten = flatten;
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exports.modifiedPaths = modifiedPaths;
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/*!
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* ignore
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*/
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function flatten(update, path, options, schema) {
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let keys;
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if (update && isMongooseObject(update) && !Buffer.isBuffer(update)) {
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keys = Object.keys(update.toObject({ transform: false, virtuals: false }));
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} else {
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keys = Object.keys(update || {});
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}
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const numKeys = keys.length;
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const result = {};
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path = path ? path + '.' : '';
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for (let i = 0; i < numKeys; ++i) {
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const key = keys[i];
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const val = update[key];
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result[path + key] = val;
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// Avoid going into mixed paths if schema is specified
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const keySchema = schema && schema.path && schema.path(path + key);
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const isNested = schema && schema.nested && schema.nested[path + key];
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if (keySchema && keySchema.instance === 'Mixed') continue;
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if (shouldFlatten(val)) {
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if (options && options.skipArrays && Array.isArray(val)) {
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continue;
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}
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const flat = flatten(val, path + key, options, schema);
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for (const k in flat) {
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result[k] = flat[k];
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}
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if (Array.isArray(val)) {
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result[path + key] = val;
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}
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}
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if (isNested) {
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const paths = Object.keys(schema.paths);
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for (const p of paths) {
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if (p.startsWith(path + key + '.') && !result.hasOwnProperty(p)) {
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result[p] = void 0;
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}
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}
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}
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}
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return result;
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}
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/*!
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* ignore
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*/
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function modifiedPaths(update, path, result) {
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const keys = Object.keys(update || {});
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const numKeys = keys.length;
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result = result || {};
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path = path ? path + '.' : '';
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for (let i = 0; i < numKeys; ++i) {
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const key = keys[i];
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let val = update[key];
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result[path + key] = true;
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if (isMongooseObject(val) && !Buffer.isBuffer(val)) {
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val = val.toObject({ transform: false, virtuals: false });
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}
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if (shouldFlatten(val)) {
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modifiedPaths(val, path + key, result);
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}
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}
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return result;
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}
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/*!
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* ignore
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*/
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function shouldFlatten(val) {
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return val &&
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typeof val === 'object' &&
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!(val instanceof Date) &&
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!(val instanceof ObjectId) &&
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(!Array.isArray(val) || val.length > 0) &&
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!(val instanceof Buffer) &&
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!(val instanceof Decimal128) &&
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!(val instanceof Binary);
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}
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