Problem with saving checkboxes

[timdiels1]

Bug Description

In Laravel v 5.3 saving an item with a checkbox fails when leaving the checkbox empty because the database column does not allow nullable values.

Fix

On the storeCRUD and updateCRUD in the CrudController we need to change the code that is changing empty (also '0' string) to null.

So we need to go from:

if (empty($value)) {
    $request->request->set($key, null);
}

to

if (empty($value) && $value !== '0') {
    $request->request->set($key, null);
}

Note: I have tested this only on MySQL, and not on other databases, but I don't think this should cause issues.

[tabacitu]

You're totally right, @timdiels1

Thanks for the fix, I've implemented it.

Cheers to you! Keep 'em coming!