如何构建未链接到symfony2中的任何实体的通用表单

Question

So far , i have only built form which are related to entities using formbuilder

i normally do this

$builder->add("tasks")

Then i do this

$Form = $this->createForm(new TaskType(), $entity);

Now i just want a generic form where i have the select boxes in which i can load entities from database.

I am not persisting or binding that form i just want that when user select user and hit submit then i go to that user page

IN the above form i used to have tasks as property in user entity so i used add.

But i just want want to display tasks , whichis not linked to user can i do that

$form = $this->createFormBuilder($task)
        ->add('task', 'text')
        ->add('dueDate', 'date')
        ->getForm();

Example i above code can i do that

$form = $this->createFormBuilder()
        ->add('task', 'text')
        ->add('dueDate', 'date')
        ->getForm();

Answer 1

Before reading, why would you show a <select> for doing nothing? Maybe there is a better solution to achieve what you want :)

Anyway, if your form has some field not related to an entity property, just set the option property_path to false. Assuming you want to display a <select> ot tasks i would do:

$this->createFormBuilder()
    ->add('task', 'entity', array(
        'property_path' => false,
        'class'         => 'Acme\HelloBundle\Entity\Task', // Full/short FQCN
        'property'      => 'name', // Assuming your task as a property "name",
    ))
;

And if for some reason you need selected value (mean selected Task object) you can get with $form->get('task')->getData(), after binding it with the request.