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From "Robert Zeigler (JIRA)" <j...@apache.org>
Subject [jira] Created: (TAP5-692) T5 should pick up validators to be applied to a field from the containing component's .properties file.
Date Mon, 11 May 2009 18:33:45 GMT
T5 should pick up validators to be applied to a field from the containing component's .properties
file.
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                 Key: TAP5-692
                 URL: https://issues.apache.org/jira/browse/TAP5-692
             Project: Tapestry 5
          Issue Type: New Feature
          Components: tapestry-core
            Reporter: Robert Zeigler
            Priority: Minor


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.




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