Re: [Catalyst] State of the art in form validat =?UTF-8?Q?ion; _opinion_poll=E2=80=A6_Model_based_forms/validation=3F?=

[Zbigniew Lukasiak]

What I like about the FormFu approach is that it gives you a *path*
for the development.  For a quick start you just stay with the
defaults - they still are displayed OK and you can show the project to
someone.  Then when need to customise it's look and feel you generate
the templates and tickle them to submission.

--
Zbyszek

On Dec 5, 2007 9:16 AM, Carl Franks <fireartist at gmail.com> wrote:
> On 05/12/2007, Ashley Pond V <apv at sedition.com> wrote:
> > What are best practices? DBIx::Class::Validation reusing your form
> > package profiles? But you still have to write your own forms. I've
> > searched around a lot and can't find a thorough, coherent Catalyst
> > related doc about it.
> >
> > I really want one, final approach to this I'll use every time from
> > now on instead of experimenting with packages and home rolled stuff
> > over and over. If someone is there, or even close. Please kick down.
>
> I'm really happy with how HTML::FormFu is coming along.
> Like your example, you can define your entire form in any config file
> Config::Any supports. Although I (predictably) prefer the FormFu style
> declarations.
>
> It has lots of little shortcuts that make things easier, such as auto_label().
> If you set, for example, auto_label('label_%n') at the form-level,
> then all fields will automatically use localize() to set their own
> label (replacing the '%n' with their field name).
> Like many settings, this can be set at either the form-, the
> fieldset-, or the field-level, and when the method's used as a
> 'getter', it traverses the field's parents, searching for a value.
>
> There's also an auto_error_message() which can get error messages from
> your localize() object, based on the field's name and/or type.
>
> (the next couple of features are currently only in svn, and will be
> released to cpan in the next week...)
>
> By default, the form's markup is generated internally by perl
> subroutines. However, by simply setting render_method('tt') it
> switches to using TT templates (which are installed using
> File::ShareDir) and generates the exact same markup.
> If you wish to customise the form markup, you can create a local copy
> of the templates, and change the form however you want.
> You can also use your own, single TT file, much like claco's example
> earlier in this thread, explicitly placing individual fields.
>
> There's also DBIC integration, which I'm currently in the process of
> documenting - again, on it's way to cpan soon.
>
> If you had, say, these 2 tables:
>
>     table: user
>     cols: name
>     might_have: address
>
>     table: address
>     cols: user, street, city
>     belongs_to: user
>
> Then you could create a form like so:
>
> ---
> elements:
>   - name: name
>
>   - type: Fieldset
>     nested_name: address
>     elements:
>       - name: street
>       - name: city
>
>   - type: Submit
>
> If you then pass that form a 'user' row, it will automatically
> traverse the 'address' relationship, filling in the form fields:
>     $form->values_from_model( $user_row );
>
> And when the form's submitted, you can save the changes back to the
> database, again, automatically following the relationship:
>     $form->save_to_model( $user_row );
>
> It also handles has_one, has_many, and many_to_many relationships.
>
> To finish off, here's an example of how I'd probably write your form
> (as far as I can interpret it):
>
> ---
> auto_fieldset:
>   legend: user
>
> elements:
>   - name: last_name
>     constraints:
>       - type: Required
>       - type: Length
>         max: 50
>
>   - name: suffix
>     constraints:
>       - type: Regex
>         regex: '?-xism:\A[IVX]{1,3}\z'
>
>   - name: email
>     constraints:
>       - type: Required
>       - type: Email
>       - type: Length
>         max: 80
>
>   - type: Submit
>
> If you're interested in looking further, the svn location is:
> http://html-formfu.googlecode.com/svn/trunk/HTML-FormFu
> or you can ask any questions on the mailing list:
> http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/html-formfu
>
> Cheers,
> Carl
>
>
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>



-- 
Zbigniew Lukasiak
http://brudnopis.blogspot.com/