Fyi, Struts 1.3 is moving to a Validator 1.2 dependency. This version includes support for the form "extends" attribute which provides just what you were asking for.
Hubert On 8/26/05, Laurie Harper <[EMAIL PROTECTED]> wrote: > Quinn Stone wrote: > > Is there any way to define the validation for a common form field once in > > validation.xml and re-use the validation in other <form> blocks? > > > > This would allow validation.xml to be updated in one place rather than many > > places, if validation requirements change for a field that is used on many > > forms. It would also help ensure that I (or others) won't accidentally > > incorrectly code different validations for the same field on different > > forms. > > The benefits will compound if I start writing custom validation routines. > > > > I am new to Struts, and this is my first project using it, so I hope I'm not > > missing something obvious. > > I guess what you're looking for is the ability to specify a list/set of > validations (e.g. 'depends="required,mask"') and associated parameters, > messages, etc. once for a field and have that same configuration applied on > different forms using that field, right? Unfortunately, as far as I know, > validator doesn't provide any facility to accomplish that directly. > However, I can think of one or two ways you could achieve it. > > The first would be using XML entities to setup and reference your re-used > validations, something like: > > <DOCTYPE ... [ > <!ENTITY field1 "<field name="loginid" depends="required"...> > ]> > ... > <form ...> > &field1; > ... > </form> > > (it may take some fiddling with syntax in the entity definition, and using > external entities might be easier). > > The second would be to define custom validation rules that encapsulate the > required composition and parameterization under a single name so that > everywhere the field is used you'd specify > 'depends="my-composite-validation"'. > > If there are any better ways to do this, I'd be interested to hear about > them too :-) > > L. > -- > Laurie Harper > Open Source advocate, Java geek: http://www.holoweb.net/laurie > Founder, Zotech Software: http://www.zotechsoftware.com/ > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
