Select2 ======= The admin comes with `select2 `_ integration since version 2.2.6. Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results. The select2 is enabled on all ``select`` form elements by default. Disable select2 --------------- If you don't want to use select2 in your admin, you can disable it in ``config.yml``. .. configuration-block:: .. code-block:: yaml # app/config/config.yml sonata_admin: options: use_select2: false # disable select2 .. note:: If you disable select2, autocomplete form types will stop working. Disable select2 on some form elements ------------------------------------- To disable select2 on some ``select`` form element, set data attribute ``data-sonata-select2 = "false"`` to this form element. .. code-block:: php public function configureFormFields(FormMapper $formMapper) { $formMaper ->add('category', 'sonata_type_model', array( 'attr' => array( 'data-sonata-select2' => 'false' ) )) ; } .. note:: You have to use false as string! ``"false"``! AllowClear ---------- Select2 parameter ``allowClear`` is handled automatically by admin. But if you want to overload the default functionality, you can set data attribute ``data-sonata-select2-allow-clear="true"`` to enable ``allowClear`` or ``data-sonata-select2-allow-clear = "false"`` to disable the ``allowClear`` parameter. .. code-block:: php public function configureFormFields(FormMapper $formMapper) { $formMapper ->add('category', 'sonata_type_model', array( 'attr' => array( 'data-sonata-select2-allow-clear' => 'false' ) )) ; } .. note:: You have to use false as string! ``"false"``!