Set Default value of choice field Symfony FormType

Question

I want from the user to select a type of questionnaire, so I set a select that contains questionnaires types.

Types are loaded from a an entity QuestionType

Answer 1

Set a default value on the member variable inside your entity (QuestionType), e.g.

/**
 * default the numOfCourses to 10
 *
 * @var integer
 */
private $numCourses = 10;