def show
    object = model_to_save.find(params[:id])
    object['aqis_class_ids']         = object.aqis_class_ids
    object['aqis_facility_type_ids'] = object.aqis_facility_type_ids

    if restrict_update_and_delete_to_creator_and_admin && !is_current_user_an_admin_or_creator?(object, 'show')
      render :json => {:success => false, :message => "ACCESS DENIED"}
      return false
    end

    render :json => {
      :success => true,
      :data =>  object
    }
  end

           {
                xtype: 'labeled',
                fieldLabel: 'Classes',
                field_xtype: 'select',
                store: CRS.stores.instances.aqis_classes,
                valueField: 'id',
                displayField: 'name',
                mode: 'local',
                tpl: '<tpl for="."><div class="x-combo-list-item">{long_name}</div></tpl>',
                listWidth: '500',
                triggerAction: 'all',
                msgTarget:'side',
                multiSelect: true,
                hideTrigger: false,
                width: 280,
                name: 'aqis_class_ids'
              },