Class DS.HasManyReference

A HasManyReference is a low level API that allows users and addon author to perform meta-operations on a has-many relationship.

Show:

Module: ember-data
returns
String
The link Ember Data will use to fetch or reload this has-many relationship.

The link Ember Data will use to fetch or reload this has-many relationship.

Example

app/models/post.js
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export default DS.Model.extend({
  comments: DS.hasMany({ async: true })
});
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let post = store.push({
  data: {
    type: 'post',
    id: 1,
    relationships: {
      comments: {
        links: {
          related: '/posts/1/comments'
        }
      }
    }
  }
});

let commentsRef = post.hasMany('comments');

commentsRef.link(); // '/posts/1/comments'
Module: ember-data
returns
Promise
a promise that resolves with the ManyArray in this has-many relationship.

Loads the relationship if it is not already loaded. If the relationship is already loaded this method does not trigger a new load.

Example

app/models/post.js
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export default DS.Model.extend({
  comments: DS.hasMany({ async: true })
});
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let post = store.push({
  data: {
    type: 'post',
    id: 1,
    relationships: {
      comments: {
        data: [{ type: 'comment', id: 1 }]
      }
    }
  }
});

let commentsRef = post.hasMany('comments');

commentsRef.load().then(function(comments) {
  //...
});
Module: ember-data
returns
Object
The meta information for the has-many relationship.

The link Ember Data will use to fetch or reload this has-many relationship.

Example

app/models/post.js
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export default DS.Model.extend({
  comments: DS.hasMany({ async: true })
});
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let post = store.push({
  data: {
    type: 'post',
    id: 1,
    relationships: {
      comments: {
        links: {
          related: {
            href: '/posts/1/comments',
            meta: {
              count: 10
            }
          }
        }
      }
    }
  }
});

let commentsRef = post.hasMany('comments');

commentsRef.meta(); // { count: 10 }
Module: ember-data
objectOrPromise
Array|Promise
a promise that resolves to a JSONAPI document object describing the new value of this relationship.
returns
DS.ManyArray

push can be used to update the data in the relationship and Ember Data will treat the new data as the canonical value of this relationship on the backend.

Example

app/models/post.js
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export default DS.Model.extend({
  comments: DS.hasMany({ async: true })
});
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let post = store.push({
  data: {
    type: 'post',
    id: 1,
    relationships: {
      comments: {
        data: [{ type: 'comment', id: 1 }]
      }
    }
  }
});

let commentsRef = post.hasMany('comments');

commentsRef.ids(); // ['1']

commentsRef.push([
  [{ type: 'comment', id: 2 }],
  [{ type: 'comment', id: 3 }],
])

commentsRef.ids(); // ['2', '3']
Module: ember-data
returns
Promise
a promise that resolves with the ManyArray in this has-many relationship.

Reloads this has-many relationship.

Example

app/models/post.js
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export default DS.Model.extend({
  comments: DS.hasMany({ async: true })
});
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let post = store.push({
  data: {
    type: 'post',
    id: 1,
    relationships: {
      comments: {
        data: [{ type: 'comment', id: 1 }]
      }
    }
  }
});

let commentsRef = post.hasMany('comments');

commentsRef.reload().then(function(comments) {
  //...
});
Module: ember-data
returns
String
The name of the remote type. This should either be "link" or "ids"

This returns a string that represents how the reference will be looked up when it is loaded. If the relationship has a link it will use the "link" otherwise it defaults to "id".

Example

app/models/post.js
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export default DS.Model.extend({
  comments: DS.hasMany({ async: true })
});
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let post = store.push({
  data: {
    type: 'post',
    id: 1,
    relationships: {
      comments: {
        data: [{ type: 'comment', id: 1 }]
      }
    }
  }
});

let commentsRef = post.hasMany('comments');

// get the identifier of the reference
if (commentsRef.remoteType() === "ids") {
  let ids = commentsRef.ids();
} else if (commentsRef.remoteType() === "link") {
  let link = commentsRef.link();
}
Module: ember-data
returns
DS.ManyArray

value() sycronously returns the current value of the has-many relationship. Unlike record.get('relationshipName'), calling value() on a reference does not trigger a fetch if the async relationship is not yet loaded. If the relationship is not loaded it will always return null.

Example

app/models/post.js
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export default DS.Model.extend({
  comments: DS.hasMany({ async: true })
});
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let post = store.push({
  data: {
    type: 'post',
    id: 1,
    relationships: {
      comments: {
        data: [{ type: 'comment', id: 1 }]
      }
    }
  }
});

let commentsRef = post.hasMany('comments');

post.get('comments').then(function(comments) {
  commentsRef.value() === comments
})