Form validation issue

kingmaoam

Hi,
I just wanted to ask if you have an idea to solve my issue...
I have a simple module create form where I can add some values and have checkbox to control if these values will be displayed in the frontend. Now I thought to have a cross-validation like: if checkbox show_city is true, then the field city should be a required field. if show_city is false, the field should be optional...

Is that possible with the form builder api?

almostcompletely

I think you might want the "linked" field type? http://docs.getfuelcms.com/general/forms#linked

admin

You can add additional validation rules in the forms configuration file. There currently isn't a way to do that in the CMS. The documentation gives an example (look at the kitchen sink example). You can also include additional javascript if you have custom Javascript validation.
http://docs.getfuelcms.com/modules/forms