eventespresso / event-espresso-core

     * @throws EE_Error

     * @throws RestException

     */

    public function addRelation(EEM_Base $model, EE_Model_Relation_Base $relation, WP_REST_Request $request)

    {

        list($model_obj, $other_obj) = $this->getBothModelObjects($model, $relation, $request);

        // Add a relation.

        $related_obj = $model_obj->_add_relation_to($other_obj,$relation->get_other_model()->get_this_model_name());

        return array(

            'success' => $related_obj === $other_obj,

            'related_obj' => $this->returnModelObjAsJsonResponse($related_obj)

        );

    }

    /**

     * @throws EE_Error

     * @throws RestException

     */

    public function removeRelation(EEM_Base $model, EE_Model_Relation_Base $relation, WP_REST_Request $request)

    {

        list($model_obj, $other_obj) = $this->getBothModelObjects($model, $relation, $request);

        // Remove the relation.

        $related_obj = $model_obj->_remove_relation($other_obj, $relation->get_other_model()->get_this_model_name());

        return array(

            'success' => $related_obj === $other_obj,

            'related_obj' => $this->returnModelObjAsJsonResponse($related_obj)

        );

    }

    /**

     * Gets the model objects indicated by the model, relation object, and request.