Form Elements

Usage

Add a DoctrineModule\Form\Element\ObjectSelect, DoctrineModule\Form\Element\ObjectRadio or DoctrineModule\Form\Element\ObjectMultiCheckbox to your Form. For this to work, you need to specify at least an object_manager, the target_class to use and a property of the class to use as the Label.

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namespace Module\Form;

use Laminas\Form\Form;
use DoctrineModule\Persistence\ObjectManagerAwareInterface;
use Doctrine\Persistence\ObjectManager;

class MyForm extends Form implements ObjectManagerAwareInterface
{
    protected $objectManager;

    public function init()
    {
        $this->add([
            'type' => 'DoctrineModule\Form\Element\ObjectSelect',
            'name' => 'name',
            'options' => [
                'object_manager' => $this->getObjectManager(),
                'target_class'   => 'Module\Entity\SomeEntity',
                'property'       => 'property',
            ],
        ]);
    }

    public function setObjectManager(ObjectManager $objectManager)
    {
        $this->objectManager = $objectManager;
    }

    public function getObjectManager()
    {
        return $this->objectManager;
    }
}
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Example 2 : modifying the label

In times you want to change the display of the label you will need to use the label_generator option. This option allows you to modify the label as much as you like. In this simple example i will concatenate two properties with a dash.

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$this->add([
    'type' => 'DoctrineModule\Form\Element\ObjectSelect',
    'name' => 'name',
    'options' => [
        'object_manager'  => $this->getObjectManager(),
        'target_class'    => 'Module\Entity\SomeEntity',
        'label_generator' => function ($targetEntity) {
            return $targetEntity->getId() . ' - ' . $targetEntity->getTitle();
        },
    ],
]);
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The callable function will always receive the target entity as a parameter so you will be able to use all functionalities your entities provide. Another example would be to completely switch out the labels in case your website has specific options to provide more accessible labels.

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$this->add([
    'type' => 'DoctrineModule\Form\Element\ObjectSelect',
    'name' => 'name',
    'options' => [
        'object_manager'  => $this->getObjectManager(),
        'target_class'    => 'Module\Entity\SomeEntity',
        'label_generator' => function ($targetEntity) use ($someSession) {
            if ('accessible' === $someSession->getCurrentMode()) {
                return $targetEntity->getAccessibleLabel();
            }

            return $targetEntity->getLabel();
        },
    ],
]);
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Example 3 : extended version

If you don’t need or want the entire repository you can specify a find_method to use. This method must exist in the repository. The following example executes the findBy method and passes in the specified parameters, but when using custom repositories you can do even more advanced queries! Also you can specify a method as a property by setting is_method to true.

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$this->add([
    'type' => 'DoctrineModule\Form\Element\ObjectSelect',
    'name' => 'name',
    'options' => [
        'object_manager' => $this->getObjectManager(),
        'target_class'   => 'Module\Entity\User',
        'property'       => 'ComposedOfSeveralProperties',
        'is_method'      => true,
        'find_method'    => [
            'name'   => 'findBy',
            'params' => [
                'criteria' => ['active' => 1],

                // Use key 'orderBy' if using ORM
                'orderBy'  => ['lastname' => 'ASC'],

                // Use key 'sort' if using ODM
                'sort'  => ['lastname' => 'ASC'],
            ],
        ],
    ],
]);
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Example 4 : including an empty option

If you want to include an empty option at the top, set the display_empty_item setting to true. You can also specify the empty_item_label setting, the default is an empty string.

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$this->add([
    'type' => 'DoctrineModule\Form\Element\ObjectSelect',
    'name' => 'name',
    'options' => [
        'object_manager'     => $this->getObjectManager(),
        'target_class'       => 'Module\Entity\SomeEntity',
        'property'           => 'property',
        'display_empty_item' => true,
        'empty_item_label'   => '---',
    ],
]);
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Example 5 : Add html attributes to the elements

To set custom HTML attributes on each valueOption you can use the option_attributes setting to specify an array of key/value pairs whereby the keys represent a valid HTML attribute (data-, aria-, onEvent, etc.).

The value needs to be of type string or callable (in which case a string - or something able to be casted to string - needs to be returned). Check the following example:

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$this->add([
    'type' => 'DoctrineModule\Form\Element\ObjectSelect',
    'name' => 'test',
    'options' => [
        'object_manager'    => $this->getObjectManager(),
        'target_class'      => 'Module\Entity\SomeEntity',
        'property'          => 'property',
        'option_attributes' => [
            'class'   => 'styledOption',
            'data-id' => function (\Module\Entity\SomeEntity $entity) {
                return $entity->getId();
            },
        ],
    ],
]);
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The above example will generate HTML options with a data-key attribute:

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<select name="test">
    <option value="1" class="styledOption" data-id="1">property one</option>
    <option value="2" class="styledOption" data-id="2">property two</option>
</select>
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It is noteworthy that, when working with an option_attribute value of type callable, you do not need to define the fully qualified classname into the function. The object passed into the function will always be identical to the type you define on the key target_class.

Example 6: Implementing support

Once lists become larger there’s a big user-experience bonus when lists are groupt using the html attribute. DoctrineModule provides this functionality with the optgroup_identifier.

The assumption DoctrineModule does however is that your data structure has the optgroup-grouping in mind. See the following example:

Add the Select list like this:

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$this->add([
    'type' => 'DoctrineModule\Form\Element\ObjectSelect',
    'name' => 'name',
    'options' => [
        'object_manager'      => $this->getObjectManager(),
        'target_class'        => 'Module\Entity\SomeEntity',
        'property'            => 'property',
        'optgroup_identifier' => 'category',
    ],
]);
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With your data structure like this:

id  | property   | category
1   | Football   | sports
2   | Basketball | sports
3   | Spaghetti  | food

Will create a HTML Select list like this:

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<select name="name">
    <optgroup label="sports">
        <option value="1">Football</option>
        <option value="2">Basketball</option>
    </optgroup>
    <optgroup label="food">
        <option value="3">Spaghetti</option>
    </optgroup>
</select>
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Example 7: formatting on empty optgroups

In case you define an optgroup_identifier and the data inside this column is empty or null you have two options of rendering these cases. From a UX point of view you should group all “loose” entries inside a group that you call “others” or the likes of that. But you’re also able to render them without any grouping at all. Here’s both examples:

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$this->add([
    'type' => 'DoctrineModule\Form\Element\ObjectSelect',
    'name' => 'name',
    'options' => [
        'object_manager'      => $this->getObjectManager(),
        'target_class'        => 'Module\Entity\SomeEntity',
        'property'            => 'property',
        'optgroup_identifier' => 'category',
    ],
]);
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id  | property   | category
1   | Football   | sports
2   | Basketball |
3   | Spaghetti  | food

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<select name="name">
    <optgroup label="sports">
        <option value="1">Football</option>
    </optgroup>
    <optgroup label="food">
        <option value="3">Spaghetti</option>
    </optgroup>
    <option value="2">Basketball</option>
</select>
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$this->add([
    'type' => 'DoctrineModule\Form\Element\ObjectSelect',
    'name' => 'name',
    'options' => [
        'object_manager'      => $this->getObjectManager(),
        'target_class'        => 'Module\Entity\SomeEntity',
        'property'            => 'property',
        'optgroup_identifier' => 'category',
        'optgroup_default'    => 'Others',
    ],
]);
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id  | property   | category
1   | Football   | sports
2   | Basketball |
3   | Spaghetti  | food

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<select name="name">
    <optgroup label="sports">
        <option value="1">Football</option>
    </optgroup>
    <optgroup label="others">
        <option value="2">Basketball</option>
    </optgroup>
    <optgroup label="food">
        <option value="3">Spaghetti</option>
    </optgroup>
</select>
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