Symfony2实体选择问题

Question

I have an entity form field in my Symfony2 project.

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('productId', 'genemu_jquerychosen_entity', array(
        'class' => 'EMRSabaBundle:Product',
        'property' => 'name'
    ))
    ;
}

The Product entity has some objects like price, name, mode, & id I want to let user choose the product by name & see chosen produc's price, then submit product ID, not name.

Is there any soloution?

Answer 1

As per the documentation for this bundle:

You can use all the core choice types from Symfony (choice, country, ...) and Doctrine (ORM and ODM), you just have to prefix the type name with genemu_jqueryselect2_*

This means you are using a "regular" entity field. You can do what you want by skipping the definition of property and relying on the __toString() method from EMRSabaBundle:Product :

[property]

This is the property that should be used for displaying the entities as text in the HTML element. If left blank, the entity object will be cast into a string and so must have a __toString() method.

Change your code to:

$builder->add('productId', 'genemu_jquerychosen_entity', array(
        'class' => 'EMRSabaBundle:Product'
    ))

And define the _toString() method in your EMRSabaBundle:Product object as follow:

public function __toString()
{
    return $this->name . ' (' . $this->price . ')';
}

http://symfony.com/doc/current/reference/forms/types/entity.html#property