自定义mongodb搜索对象？

Question

I'm building my first node.js/angular app and cannot seem to find a solution for the following problem.

If I have a User Schema such as :

User = {
  firstname: "Bryan",
  lastname: "Allan",
  email: "noemail@example.com,
  skills: ["node.js", "angular", ..]
  ...
}

Is it possible to both:

a. Search on one or multiple fields?
b. Search for the instance of string?

For example, can I use a custom search object like:

search = {
  firstname: "Br",
  skills: "node.js"
}

and have it return the above document? Is a search object the best solution?

Normally, I would return all Users and use an angular filter, but I'm worried that this approach won't scale nicely since there's going to be a large amount of users stored. With this in mind, I'd like to limit the results sent back to the browser if possible.

Answer 1

If an array just contains simple values (as in your example) you can just query it with

User.find({ firstname: "Br", skills: "node.js })

The mongoose method .find() is very powerfull. https://docs.mongodb.org/manual/reference/method/db.collection.find/

Or you could also use the aggregate() method https://docs.mongodb.org/manual/reference/method/db.collection.aggregate/