php - Symfony 2 forms: array of entities -

i trying build form multiple entities. let me first introduce sample classes:

for clarity not show annotations or abbreviate them, , not show use or namespace commands.

/**  * entity class  * @orm ... mapping orm  */ class entitya {     /**      * @var modelarray      * @orm\column(name="...", type="object")       */     private $modelarray;      // getters , setters, default constructor }  /**  * array wrapper, keeping array unique, sorting criteria etc.  * @orm(...)   */ class modelarray {     /**      * @var array<a>      */     private $array;       // getter, adder, remover, constructor, other private logic } 

notice class modelarray stores objects of given type a:

/**  * 1 more model  */ class {     /**      * @var boolean      */     private $bool;     /**      * @var string      */     private $string;      // getters, setters } 

i chose data structure, because never need objects of exist outside entitya class, , keep logic out of entity, chose implement modelarray class in between. entitya class persisted database, , child objects.

now want create form, can edit $->bool attributes of instances of array of entitya @ once. provide array<entitya>.

i proceed follows:

//in controller action $data = array(     'as' => $arrayofentitya,     ); $form = $this->createform(new gridtype(), $data); // create view, render 

my form type this:

class gridtype extends abstracttype {      public function getname() {         return 'a_grid';     }      public function buildform(formbuilderinterface $builder, array $options) {         $builder->add('as', 'collection', array(             'type' => new gridatype(),         ));     } } 

and use form type

class gridatype extends abstracttype {      public function getname() {         return 'a_grid_a';     }       public function buildform(formbuilderinterface $builder, array $options) {         $builder->add('modelarray', new modelarraytype());     }      public function getdefaultoptions(array $options) {         return array(             'data_class' => 'entitya',         );     } } 

with model array type

class modelarraytype extends abstracttype {        public function getname() {         return 'model_array';     }      public function buildform(formbuilderinterface $builder, array $options) {         // ???     }      public function getdefaultoptions(array $options) {         return array(             'data_class' => 'modelarray',         );     } } 

notice // ???: edit boolean attribute of strored in modelarray, , think appropriate form type continue 'collection'. can't find out how use array ($modelarray->array)here collection. how should this?

an then, i'm not entirely sure if practice implement such lot of form types achieve 1 usable form. there different , better way?