Hi Tobias,

Congratulations for this great initiative, I really like the practical effect it provides, thanks.

Some time ago I've been thinking about doing something like that, but showing the internal information of Symfony forms. Basically keep this information up to date as you have done here with form's themes:

• http://symfony.com/doc/current/forms.html#built-in-field-types
• http://symfony.com/doc/current/reference/forms/types/choice.html

Also, showing some lost information like type extensions availables, type guessers
and the field options that aren't shown in the doc.

For example, you could use the debug:form --format=json command to get general information,debug:form ChoiceType --format=json to get the predefined options, parent types, type extensions, etc. and debug:form ChoiceType data_class --format=json to get the predefined information of such option and so on. It would be nice to even be able to select other versions of Symfony or at least the LTS and current one.

This command is available since 3.4 but is possible adapt it to oldest Symfony versions. See implementation details:

• [Form] Display general forms information on debug:form symfony/symfony#24185 (debug:form)
• [Form] Add debug:form command symfony/symfony#23694 (debug:form <Type>)
• [Form] Display option definition from a given form type symfony/symfony#24208 (debug:form <Type> <option>)

Let me know if it is of your interest, I could help you implement the idea.

Greetings.