Run in fiddle - undefined variable $form

[ratajskym]

Is this suspected behaviour ?

URL: https://doc.nette.org/en/forms/controls -

Ex. https://doc.nette.org/en/forms/controls#toc-addcheckbox - run in fiddle leads to ->

Error Call to a member function addCheckbox() on null on line 3

Undefined variable $form

[mabar]

By fiddle - do you mean Latte Fiddle? It is just for Latte syntax - there are no other framework components installed and template has no parameters (therefore no pre-initialized variables)

First read overview and either forms in presenters or forms standalone chapters to learn, how to initialize $form variable.