Diving into Symfony2's subform features

I am attempting to embed one form within another form without creating a class specifically for the forms. Here is my current approach:


$form = $this
        ->buildForm('UserAlert', $alert)
        ->add('Alert', 'entity', array('class' => 'Blah\MgmtBundle\Entity\Alert', 'property' => 'name', 'required' => true))
        ->add('Site', 'entity', array('class' => 'Blah\MgmtBundle\Entity\Site', 'property' => 'name', 'required' => false))
        ->add('Keyword', 'entity', array('class' => 'Blah\MgmtBundle\Entity\Keyword', 'property' => 'name', 'required' => false))
        ->add('Variant', 'entity', array('class' => 'Blah\MgmtBundle\Entity\Variant', 'property' => 'name', 'required' => false))
        ->add('Name', 'text');


    $uac = $alert->getUserAlertConfig();
    $subform = $this
        ->buildForm('UserAlertConfig', $uac)
        ->add('EmailAlert', 'choice', array('choices' => array('1' => 'Yes', '0' => 'No'), 'required' => true, 'label' => 'Email Alerts'))
        ->add('EmailHours', 'text', array('required' => false, 'label' => 'Email Alert Hours'))
        ->add('TextAlert', 'choice', array('choices' => array('1' => 'Yes', '0' => 'No'), 'required' => true, 'label' => 'Text Alerts'))
        ->add('TextHours', 'text', array('required' => false, 'label' => 'Text Alert Hours'));

    $form->add($subform);
    $form = $form->getForm();

However, when using the getForm() function, an error message states:

Neither property "form" nor method "getForm()" nor method "isForm()" exists in class "Blah\MgmtBundle\Entity\UserAlert"

Does anyone have any insights on how I can make this work with quickloading functionality?

Here is the buildForm code snippet:


public function buildForm($model = '', $data)
{
    if (empty($model)) {
        throw new \Exception("Must define a model");
    }
    return $this->get('form.factory')->createBuilder('form', $data, array('data_class' => "\\Blah\\MgmtBundle\\Entity\\$model"));
}

Stack Trace:

... (Further stack trace details)

Answer №1

After some experimentation, I ended up developing a customized interface for the subform and integrating it using the following code snippet:

$form = $this
    ->buildForm('UserAlert', $alert)
    ->add('Alert', 'entity', array('class' => 'Neokeo\MgmtBundle\Entity\Alert', 'property' => 'name', 'required' => true))
    ->add('Site', 'entity', array('class' => 'Neokeo\MgmtBundle\Entity\Site', 'property' => 'name', 'required' => false))
    ->add('Keyword', 'entity', array('class' => 'Neokeo\MgmtBundle\Entity\Keyword', 'property' => 'name', 'required' => false))
    ->add('Variant', 'entity', array('class' => 'Neokeo\MgmtBundle\Entity\Variant', 'property' => 'name', 'required' => false))
    ->add('Name', 'text');

$uac = $alert->getUserAlertConfig();

$subform = $this->buildForm('UserAlertConfig', $uac, new \Neokeo\MgmtBundle\Form\UserAlertConfig)
    ->add('EmailAlert', 'choice', array('choices' => array('0' => 'No', '1' => 'Yes'), 'required' => true, 'label' => 'Email Alerts'))
    ->add('TextAlert', 'choice', array('choices' => array('0' => 'No', '1' => 'Yes'), 'required' => true, 'label' => 'Text Alerts'));

$form->add($subform, '', array('label' => ''));
$form = $form->getForm();

If there is a more straightforward method that doesn't involve creating interfaces, please share your insights with me.

Answer №2

Experiment

$form->insert('Specify the UserAlertConfig property within the UserAlert entity', $subform);

In the scenario where you provide a FormBuilder object to the insert function without indicating the property name, it will automatically use the name of the FormBuilder object (which is 'form') as the property name. However, there isn't any property titled form present in the UserAlert entity.

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