Response Not getting save in model in ember

I have to send the requests to "http:http://ift.tt/1ShMJiU gallery_id is varying and I am getting it from params.id. Now the problem I am facing is that the response from a server is an array of objects.So what should I use?By That, I meant (findAll or findRecord).When I use FindRecord it make the correct call But is not able to serialize the data.When I use findAll it calls the wrong API.

My Serializer

import DS from 'ember-data';

export default DS.JSONSerializer.extend(DS.EmbeddedRecordsMixin,{
  isNewSerializerAPI: true,
  primaryKey:'pk',
  normalize: function(typeClass, hash) {
    console.log(hash)
    var fields = Ember.get(typeClass, 'fields');
    fields.forEach(function(field) {
      var payloadField = Ember.String.underscore(field);
      if (field === payloadField) { return; }
      hash[field] = hash[payloadField];
      delete hash[payloadField];
    });
    return this._super.apply(this, arguments);
  }
});

This is the error I am getting is

Assertion Failed: You must include an 'id' for gallery in an object passed to 'push'