CODEWITHSUNDEEP
phpsymfony
Mr Pablo
Mr Pablo

Reputation: 4188

Symfony 2 - Form Entity Type: How to format the generated drop-down?

I have a form that shows a drop-down menu of categories to choose from.

These categories are setup using the Gedmo Tree Extension, so a category can have child categories.

I have a custom query in the form builder that selects only the categories that belong to a specific group. However, I need to be able to show in the drop-down which categories are parents and which are children, e.g.

Parent Category 1
  -- Child Category A
  -- Child Category B
Parent Category2
  -- Child Category C

Any idea how I can achieve this?

Also, how can I pass a variable to my query_builder, from the controller that is calling the formtype?

Upvotes: 1

Views: 5631

Answers (3)

zulus
zulus

Reputation: 2505

Extend Symfony\Bridge\Doctrine\Form\ChoiceList\EntityChoiceList and use it in formBuilder, for ex:

$formBuilder
      ->add('parent', 'entity',
            array(
              'label' => 'Parent',
              'em' => $em,
              'class' => 'w3des\\Bundle\\SiteBundle\\Entity\\Menu',
              'choice_list' => new MenuChoiceList($em, $group, $cfg['tree']),
              'required' => false,
              'empty_value' => '----'
            ));

You have to overwrite: getEntity(), getEntities(), getIdentifierValues() and probably constructor too

Upvotes: 0

MichaelL
MichaelL

Reputation: 41

A few days ago I was looking to accomplish exactly the same thing ! I used Neurofr solution here : Symfony2,Doctrine Extensions Tree : Generating a "tree"-like dropdown Select list

And it's work. Now I will try to deactivate all options that got last children from the tree.

Upvotes: 1

ilanco
ilanco

Reputation: 9957

If you don't need to select the parent you can use the optgroup tag

<select>
    <optgroup label="Category 1">
        <option>Option 1...</option>
        <option>Option 2...</option>
        <option>Option 3...</option>
    </optgroup>
    <optgroup label="Category 2">
        <option>Option 1...</option>
        <option>Option 2...</option>
        <option>Option 3...</option>
    </optgroup>
</select>

Edit:

Symfony 2 supports the optgroup tag with arrays (untested, may contain errors):

public function buildForm(FormBuilder $builder, array $options)
{
    $category_choices = array(
        array('Category 1' => array(
            '1' => 'Option 1...',
            '2' => 'Option 2...',
            '3' => 'Option 3...'
        )),
        array('Category 2' => array(
            '4' => 'Option 4...',
            '5' => 'Option 5...'
        ))
    );

    $builder->add('category_list', 'choice', array(
        'label' => 'Category',
        'choices' => $category_choices
    ));
}

Upvotes: 1

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