php - How to create form twig templates for a custom FormType? -

given symfony 2.8 project, in form want use more complex type consists of 4 text-input-fields (the reasons user input of opening times per week day).

my question:

how can define custom twig template type having multiple form-elements in it? how symfony know, template belongs type? read docs, mismatching labels , names don't fit together.

what i've done far:

i created following type:

/**  * class openingtype  */ class openingtype extends abstracttype {     /**      * @param formbuilderinterface $builder      * @param array                $options      */     public function buildform(formbuilderinterface $builder, array $options)     {         $builder->add('from', 'text', [             'label' => '',             'attr' => ['placeholder' => '08:00']         ]);         $builder->add('until', 'text', [             'label' => '',             'attr' => ['placeholder' => '18:00']         ]);     } } 

for first try, added 2 text fields here.

the type registered service:

example.form.type.opening:     class: example\mainbundle\form\type\openingtype     tags:         - { name: form.type } 

... , added way main form:

        ->add('opening_monday', openingtype::class, ['label' => 'monday']) 

how achieve use custom widget twig template custom type?

here's link in doc customize theming : http://symfony.com/doc/current/cookbook/form/form_customization.html#how-to-customize-an-individual-field or http://symfony.com/doc/current/cookbook/form/form_customization.html#twig

what can "locally":

{# /views/controller/action.html.twig #}  {% block _{ form prefix }_opening_monday_row %}      {# customize theme here #}  {% endblock %}  {% form_theme form _self %}  ...  {{ form_row(form.opening_monday) }} 

the prefix default form name 'form' , field name, here 'open_monday', can customize in form builder :

$builder->add('opening_monday', openingtype::class, ['label' => 'monday', 'block_name' => 'custom_prefix']) 

or globally in app/config.yml :

twig:     form_themes:         - form/custom_fields.html.twig 

and in app/resources/views/form/custom_fields.html.twig :

{% block custom_type_name_raw %}     {# customise "form_row" here #} {% endblock %}  {% block custom_type_name_label %}     {# customise "form_label" here #} {% endblock %}  {% block custom_type_name_widget %}     {# customise "form_widget" here #} {% endblock %} 

needs following method in customformtype :

// symfony 2.8+ public function getblockprefix() {     return "custom_type_name"; }  // before 2.7 included public function getname() {     return "custom_type_name"; }