Build the form in a Symfony controller or using a dedicated form class; ... Symfony provides a "form builder" object which allows you to describe the form fields using a fluent interface. Later, this builder creates the actual form object used to render and process contents. Creating Forms in Controllers . If your controller extends from the AbstractController, use the createFormBuilder ...

Creating an Entity Class. Suppose you're building an application where products need to be displayed. Without even thinking about Doctrine or databases, you already know that you need a Product object to represent those products.. You can use the make:entity command to create this class and any fields you need. The command will ask you some questions - answer them like done below:

If you're using the Symfony Framework, then the form factory is available automatically as a service called form.factory, you can inject it as Symfony\Component\Form\FormFactoryInterface. Also, the default base controller class has a createFormBuilder() method, which is a shortcut to fetch the form factory and call createBuilder() on it.

Symfony gives you several ways to customize how a form is rendered. In this article you'll learn how to make single customizations to one or more fields of your forms. If you need to customize all your forms in the same way, create instead a form theme or use any of the built-in themes, such as the Bootstrap theme for Symfony forms.