Query.prototype.getPopulatedPaths()

Returns:

• «Array» an array of strings representing populated paths

Gets a list of paths to be populated by this query

Example:

bookSchema.pre('findOne', function() {
   let keys = this.getPopulatedPaths(); // ['author']
 });
 ...
 Book.findOne({}).populate('author');

Example:

// Deep populate
 const q = L1.find().populate({
   path: 'level2',
   populate: { path: 'level3' }
 });
 q.getPopulatedPaths(); // ['level2', 'level2.level3']