Example: Forms API in Examples for Developers 8

Same name and namespace in other branches

1. 3.x modules/form_api_example/form_api_example.module \form_api_example

Examples using Forms API.

Creating A Drupal Form requires:

• Creating a class that extends \Drupal\Core\Form\FormBase or \Drupal\Core\Form\ConfigFormBase
  • \Drupal\form_api_example\Form\SimpleForm
• Register the route to the form or invoke using \Drupal::formBuilder()->getForm()
  • form_api_example.routing.yml

In addition to the simple example described above this module provides examples that demonstrate:

• Elements used for data input -\Drupal\form_api_example\Form\InputDemo
• The order of execution of form controller methods
  • \Drupal\form_api_example\Form\BuildDemo
• Container elements used to group items
  • \Drupal\form_api_example\Form\ContainerDemo
• Hiding elements based on the state of other elements
  • \Drupal\form_api_example\Form\StateDemo
• Vertical Tabs elements in forms
  • \Drupal\form_api_example\Form\VerticalTabsDemo
• Populating a portion on a form with Ajax callbacks
  • \Drupal\form_api_example\Form\AjaxColorForm
• Adding additional fields to a form with Ajax callbacks
  • \Drupal\form_api_example\Form\AjaxAddMore
• Modal form creation
  • \Drupal\form_api_example\Controller\Page
  • \Drupal\form_api_example\Form\ModalForm
• Displaying a form in a block
  • \Drupal\form_api_example\Plugin\Block\SimpleFormBlock

End of "defgroup field_example".

Parent topics

File

form_api_example/form_api_example.module, line 8

Example forms using the Forms API.

Classes