Parse client javascript: Query to select only objectId from pointer

Question

If I have structure like below:

_User Structure:

objectId
username
password
name - string

Posts Structure:

objectId
postName - string
postMsg - string
postAuthor - Pointer< _User > (Pointer to the User Class)

I want to query post, and want to include postAuthor's objectId only. Currently I am using something like following:

var Posts = Parse.Object.extend("Posts");
var query = new Parse.Query(Posts);
query.include("postAuthor");

But this query includes author's details in each post, which is duplicate also making response heavy.

Is there is any way to include only postAuther's objectId?

simonberry · Accepted Answer · 2017-07-01 10:57:13Z

1

you dont have to use 'query.include`

the postAuthor field will be a pointer, which includes the id (objectId) :

var Posts = Parse.Object.extend("Posts");
var query = new Parse.Query(Posts);
// filter as required
query.find().then (function (posts) {
   posts.forEach(function (post) {
      console.log('Authors objectId is ' + post.get('postAuthor').id
   })
})

answered Jul 1, 2017 at 10:57

simonberry

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2 Comments

priyanka B Over a year ago

But it makes response really heavy, I want few columns from 'Post'. and only 'id' for 'postAuthor', normally it gives all columns from 'user' table as well.

simonberry Over a year ago

To limit the fields in 'Post', use the Parse.query.select. If you haven't asked for the query to include the user, it wont . i.e, you must NOT have the line 'query.include("postAuthor");'

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