Treating Backbone Collection as an object instead of an array

Question

Treating Backbone Collection as an object instead of an array

Currently, I am working on incorporating nested comments using both Backbone and Rails. In my current setup on the server side, comment models are utilized to store the unique identifier parent_comment_id (assuming they have one). Whenever the application requests comments for a specific entity, I send back a JSON object whereby the keys represent the parent_comment_ids while the corresponding values consist of arrays of comments linked to that given parent comment ID. For example:

{
   "" : [{id: 1, content: "I'm an unnested comment, parent_comment_id: ""}],
   1  : [{id: 2, content: "I am nested under the comment with an id of 1", parent_comment_id: 1}, etc.],
   ...
}

The primary issue at hand currently is that the Comments collection in Backbone is returning an array of length 1, where the only element found within is the comments hash.

Is there a way for me to customize or override the parsing of the JSON response conducted by the Comments collection in order to ensure that the response returned is the JSON response hash instead of an array?

javascript ruby-on-rails json backbone.js

Answer 1

Answer №1

If needed, it is possible to customize the collection.parse function

Answer 2

If needed, it is possible to customize the collection.parse function

Answer 3

Answer №2

Upon further reflection, I concluded that the most effective approach would be to transfer the responsibility of constructing the comments hash to the client side. By implementing this strategy, I can maintain the original design of parsing collections as Arrays of objects and then utilize a specific method to generate the desired hash:

Post.Collections.Comments = Backbone.Collection.extend({

  ...

  organizeComments: function() {
    var commentsHash = {},
        key;

    this.models.forEach(function(comment) {
      key = comment.get('parent_comment_id');
      commentsHash[key] = commentsHash[key] || [];
      commentsHash[key].push(comment);
    });

    return commentsHash;
  }

});

Answer 4

Upon further reflection, I concluded that the most effective approach would be to transfer the responsibility of constructing the comments hash to the client side. By implementing this strategy, I can maintain the original design of parsing collections as Arrays of objects and then utilize a specific method to generate the desired hash:

Post.Collections.Comments = Backbone.Collection.extend({

  ...

  organizeComments: function() {
    var commentsHash = {},
        key;

    this.models.forEach(function(comment) {
      key = comment.get('parent_comment_id');
      commentsHash[key] = commentsHash[key] || [];
      commentsHash[key].push(comment);
    });

    return commentsHash;
  }

});

Treating Backbone Collection as an object instead of an array

Answer №1

Answer №2

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