[TAP5-692] T5 should pick up validators to be applied to a field from the containing component's .properties file.

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 5.2.0
• Component/s: tapestry-core
• Assignee: Robert Zeigler
• Reporter: Robert Zeigler
• Created: 11/May/09 18:32
• Updated: 18/Jul/09 14:10
• Resolved: 22/Jun/09 12:43

Description

Currently, there are two core-supported methods for specifying the validators to be applied to a particular form field: the @Validator annotation, and the validate attribute. Tapestry supports, however, specifying constraints to a specific validator in the .properties file. For instance:
<t:textfield t:id="someField" validate="regexp">

Could have an entry in the .properties file such as:
someField-regexp=^\d+$
someField-regexp-message=You must input a number for someField

What would be equally nice is to be able to specify the actually regexp validator as a constraint in the .properties file:

someField-validators=regexp

Or
someField-validators=required,regexp

This would be helpful for using, eg, BeanEditForm, where you might want to specify the constraints for a large number of fields, don't want to provide parameters for each of those fields, and you don't have access to the source to add @Validator to each of the properties.

This will probably take the form of a new ValidationConstraintGenerator, but there may be some additional "plumbing" involved to get access to the containing page/component's message catalog.