Query on pointer in parse.com Objects in Javascript

Question

I have a Class of Company which has User pointers. The query I want on Company class is like this:

Retrieve Company rows where User object has a name equal to 'ABC'

So, how should I form this query ?

var Company = Parse.Object.extend("Company");
var query = Parse.Query(Company);
query.include("User");

query.equalTo("name")       ????

Is it possible to write such a request in a single query ? Thanks.

Living

Answer 1

You'll need to query for the User first based on the name of "ABC". Then in the success callback of that query, do the query on your Company table using the objectId returned from the User query. Something like this:

var userQuery = Parse.Query('_User');
var companyQuery = Parse.Query('Company');

userQuery.equalTo('name', 'ABC');

userQuery.find({
  success: function(user) {
    var userPointer = {
      __type: 'Pointer',
      className: '_User',
      objectId: user.id
    }

    companyQuery.equalTo('user', userPointer);

    companyQuery.find({
      success: function(company) {
        // WHATEVER
      },
      error: function() {
      }
    });
  },
  error: function() {
  }
});

Spectroscope

Hi, thanks for answering.. I asked because I needed to know if this is possible in a single query.. Similar to inner queries in MySql. – Living

It's very awkward to have to create a pointer element, but that does work. Thank you for this. – Mountbatten

Answer 2

You can use an inner query:

var Company = Parse.Object.extend("Company");
var mainQuery = Parse.Query(Company);

var UserObject = Parse.Object.extend("User");
var innerUserQuery = new Parse.Query(UserObject);
innerBankQuery.equalTo("name", "ABC");
mainQuery.matchesQuery("bank", innerBankQuery);

var ansCollection = mainQuery.collection();
    ansCollection.fetch({
        success: function(results) {
         // Do whatever ...
      }
    });

Optimistic

What is innerBankQuery in your example? – Fireeater

Answer 3

I should say the query will be...

const userQuery = Parse.Query('_User');

userQuery.equalTo('name', 'ABC');

userQuery.find().then((user) => {

    const companyQuery = Parse.Query('Company');

    companyQuery.equalTo('user', {
      __type: 'Pointer',
      className: '_User',
      objectId: user.id
    });

    companyQuery.find().then((company) => {
        console.log(company);
    });
});

Salem

Answer 4

Assuming Your Company collection has a field called User and User collection has a name field, then you can search for Company with user name through companyQuery.equalTo("User.name");

This works in Parse 2.1.0

Nubbly