How can I clone an Ember Data record, including relationships?
ember-data, ember.js
Solution
A few improvements to Daniel's answer that allows providing overrides, and clears the id for new records, to be safe. Also I prefer not to call `save` within the clone method, but leave it up to the caller.
DS.Model.reopen({
clone: function(overrides) {
var model = this,
attrs = model.toJSON(),
class_type = model.constructor;
var root = Ember.String.decamelize(class_type.toString().split('.')[1]);
/*
* Need to replace the belongsTo association ( id ) with the
* actual model instance.
*
* For example if belongsTo association is project, the
* json value for project will be: ( project: "project_id_1" )
* and this needs to be converted to ( project: [projectInstance] )
*/
this.eachRelationship(function(key, relationship) {
if (relationship.kind == 'belongsTo') {
attrs[key] = model.get(key);
}
});
/*
* Need to dissociate the new record from the old.
*/
delete attrs.id;
/*
* Apply overrides if provided.
*/
if (Ember.typeOf(overrides) === 'object') {
Ember.setProperties(attrs, overrides);
}
return this.store.createRecord(root, attrs);
}
});
Problem
I've figured out that I can clone an Ember Data record and copy its Attributes, but none of the `belongsTo`/`hasMany` relationships are cloned. Can I do this somehow if I don't know what relationships would be possible, going off of the relationships that exist? For reference, here is what I've got that will clone an Ember Data record's attributes: ``` var attributeKeys = oldModel.get('constructor.attributes.keys.list'); var newRecord = this.get('store').createRecord(oldModel.constructor.typeKey); newRecord.setProperties(oldModel.getProperties(attributeKeys)); ```