CODEWITHSUNDEEP
javascriptbackbone.js
Alexus
Alexus

Reputation: 1973

Backbone - passing data while initializing collection's model

This is how I currently handle the data passing to my collection's model. But I'm not really sure if this the best/correct way.

MyCollection:

define([ 'underscore',  'backbone','models/mymodel'], function(_, Backbone, myModel){
  var MyCollection = Backbone.Collection.extend({
    model: function (attr, options){
        options.data = {data: options.collection.options.some_data};
        return new myModel(attr, options);
    },

    initialize: function(options) {
        this.options = options;
    }

  });

  return MyCollection;
});

MyModel:

define([ 'underscore',  'backbone' ], function(_, Backbone){
  var MyModel = Backbone.Model.extend({
    defaults: {
    },

    initialize: function(attr, options) {
`       console.log(options.data)
    }
  });

  return MyModel;
});

Is this the only way to pass the data while initializing the collection's model?

Upvotes: 0

Views: 240

Answers (2)

nikoshr
nikoshr

Reputation: 33344

You could override how a collection transforms a hash of attributes into a model. It is done via Collection._prepareModel and you would alter the options passed to this method:

var MyCollection = Backbone.Collection.extend({
    model:  MyModel,

    _prepareModel: function(attrs, options) {
        options = _.extend({}, options, {
            data: this.options.some_data
        });

        return Backbone.Collection.prototype._prepareModel.call(this, attrs, options);
    },

    initialize: function(models, options) {
        // note that the options hash is the second argument
        this.options = options;
    }
});

And a demo http://jsfiddle.net/nikoshr/jd5d8fmy/

Upvotes: 1

Jasper Seinhorst
Jasper Seinhorst

Reputation: 1074

No, try this in MyCollection:

model: myModel,

And if you create a new myModel do this:

var model = new myModel({
     prop1: 'something', // etc
});

Upvotes: 1

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