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50 lines
1.2 KiB
JavaScript

'use strict';
const utils = require('../../utils');
/**
* If populating a path within a document array, make sure each
* subdoc within the array knows its subpaths are populated.
*
* #### Example:
*
* const doc = await Article.findOne().populate('comments.author');
* doc.comments[0].populated('author'); // Should be set
*
* @param {Document} doc
* @param {Object} [populated]
* @api private
*/
module.exports = function markArraySubdocsPopulated(doc, populated) {
if (doc._id == null || populated == null || populated.length === 0) {
return;
}
const id = String(doc._id);
for (const item of populated) {
if (item.isVirtual) {
continue;
}
const path = item.path;
const pieces = path.split('.');
for (let i = 0; i < pieces.length - 1; ++i) {
const subpath = pieces.slice(0, i + 1).join('.');
const rest = pieces.slice(i + 1).join('.');
const val = doc.get(subpath);
if (val == null) {
continue;
}
if (utils.isMongooseDocumentArray(val)) {
for (let j = 0; j < val.length; ++j) {
if (val[j]) {
val[j].populated(rest, item._docs[id] == null ? void 0 : item._docs[id][j], item);
}
}
break;
}
}
}
};