php - Symfony3 create form without entity in type file -

i have created form in controller :

$data = array (); $formbuilder = $this->createformbuilder ( $data ); $formbuilder->add( 'field1', numbertype::class, array(                     'constraints' => array(                             new notblank(),                     ),             ) )             ->add ( 'field2', numbertype::class, array(                     'constraints' => array(                             new notblank(),                     ) ...); $form = $formbuilder->getform (); 

i trying put form creation in type file. did form not created , can't display form fields in view.i don't understand why.

#in controlcontroller $data = array (); $formbuilder= $this->createformbuilder(controltype::class, $data); $form = $formbuilder->getform ();  #in controltype public function buildform(formbuilderinterface $builder, array $options) { $builder->add( 'field1', numbertype::class, array(                     'constraints' => array(                             new notblank(),                     ),             ) )             ->add ( 'field2', numbertype::class, array(                     'constraints' => array(                             new notblank(),                     )....; } 

edit 1 : have tried things tell me, still doesn't work. code looks :

#in controlcontroller $data = ['field1' => null, 'field2' => null]; $formbuilder= $this->createformbuilder(controltype::class, $data); $form = $formbuilder->getform (); return $this->render ( 'metestbundle:control:index.html.twig', array (             'form' => $form->createview ()      ) );  #in controltype public function buildform(formbuilderinterface $builder, array $options) { $builder->add( 'field1', numbertype::class, array(                             'mapped' => false,     ) )     ->add ( 'field2', numbertype::class, array(             'constraints' => array(                     new notblank(),             ),             'mapped' => false     ))     ->add ( 'save', submittype::class, array (             'label' => 'control'     )); }  public function configureoptions(optionsresolver $resolver) {     $resolver->setdefaults(array(             'data_class' => control::class,     )); } 

but error have options "field1", "field2" not exist. defined options are: "action", "allow_extra_fields", "attr", "auto_initialize", "block_name", "by_reference", "compound", "constraints", "csrf_field_name", "csrf_message", "csrf_protection", "csrf_token_id", "csrf_token_manager", "data", "data_class", "disabled", "empty_data", "error_bubbling", "error_mapping", "extra_fields_message", "inherit_data", "invalid_message", "invalid_message_parameters", "label", "label_attr", "label_format", "mapped", "method", "post_max_size_message", "property_path", "required", "translation_domain", "trim", "upload_max_size_message", "validation_groups".

your controller code create form seems wrong.

the signature createformbuilder in controller defined like:

public function createformbuilder($data = null, array $options = array()) 

what want should be:

$data = ['field1' => null, 'field2' => null]; $form = $this->createform(controltype::class, $data); return $this->render ( 'metestbundle:control:index.html.twig', array (         'form' => $form->createview ()  )); 

edit: should not set data_class if you're not gonna use data object. leave configureoptions empty in case. if want use entity should pass instance of $data instead of simple array.