How to push an object into an array in Emberjs without using hasMany?

Question

Ember.js

Hello!
I have a model

var attr = DS.attr,
    hasMany = DS.hasMany;

export default DS.Model.extend({
  date: attr('string'),
  lists: hasMany('other-model')
});

The task is to store the lists string in a regular array, and not through the hasMany bundle.
My controller:

addList: function() {
            var This = this;
            var report = this.get('model');
            report.get('lists').pushObject({
                    summ: This.get('summ'),
                    comment: This.get('comment'),
                    unit: This.get('unit')
                });

                report.save();
                This.set('summ', '');
                This.set('comment', '');
                This.set('err', '');

But this option does not work :(
In the model I tried to change hasMany to string and ''
Another question is how to delete one of the lists later?

Answer 1

Maybe this article will help? look...

Answer 2

So, by default, it seems that the Ember-Data serializer should, when saving the hasMany relationship, just pass an array of id models.
Or rewrite DS.RESTSerializer (or JSONSerializer - depending on how you load the data) to suit your requirements. It has a serializeHasMany method. There already logic of preservation can be described any.
Here is a piece from my code.

serializeHasMany: function(snapshot, json, relationship) {
    var key = relationship.key;
    var isPoly = relationship.options.polymorphic;
    if (key === 'attaches') {
    	var hasMany = snapshot.hasMany(key);
    	var result = [];
    	hasMany.forEach(function(item) {
    		result.push({id: item.id, type: item.modelName}); //вот здесь я формирую структуру для полиморфного отношения, для отправки на сервер
    	});
    	json[key] = result;
      return json;
    } else {
      this._super.apply(this, arguments);
    }
  }