Saving a rule with a machine name greater than 32 characters long results in a Drupal white error page.

Reason:

The table schema limits the name column to 32 characters, and there isn't any validation to stop more than 32 being inserted.

Where?

This happens in two different forms since there are two different places one can add/edit/delete rules: at admin/structure/field_validation/list and admin/structure/types/manage/%bundle/fields/%field_name/validation

Turns out the former comes from field_validation_export_ui.inc and the latter from field_validation.admin.inc

Solutions

1. Regarding field_validation_export_ui.inc, I cannot find where the "Name" field (of type machine_name) is added. It should have a #maxlength property of 32, or there should be some code in field_validation_ctools_export_ui_form_validate() to check that the length is not greater than 32.

2. Regarding field_validation.admin.inc, attached is a patch to add the #maxlength property. This stops the user from entering more than 32 characters into the textfield, rather than validating upon submission.

I have marked this as major becuase this is the only full release of the field_validation module. I understand the move to ctools plugin, and I guess that field_validation_export_ui.inc was the beginning of this.

Regards,
Henry Blyth