populate multiple fields in mongoose code example

Example 1: mongoose multiple populate

Story.
  find(...).
  populate('fans').
  populate('author').
  exec();

Example 2: mongoose search in multiple fields

let regex = new RegExp(value.searchQuery,'i');
const filterd = await Model.find({ $and: [ { $or: [{title: regex },{description: regex}] }, {category: value.category}, {city:value.city} ] })