Rails - May 2005 - validating form data

Is there a common/accepted pattern for validating form data and
letting the user know something (s)he did was verboten?

I see the AR validation stuff, but I don''t necessarily want that; this
is form data coming into controllers, which will validate what the
user did, then (possibly) build AR''s from that, or possibly not.

In any case, is there a framework supported way (or at least a common
pattern) to doing this, and then return some possibly
fieldname-indexed hash of errors so that the action can re-render the
page with the appropriate "don''t do that" messages?

I can roll my own, but wanted to use prior art if such exists.

Thanks,

Michael

This is something I''ve also noticed missing in Rails, sometimes forms
just don''t directly map directly to AR objects

The form input helpers might also need some changes but I haven''t tried
to use them without AR objects

Michael Campbell wrote:
>Is there a common/accepted pattern for validating form data and
>letting the user know something (s)he did was verboten?
>
>I see the AR validation stuff, but I don''t necessarily want that;
this
>is form data coming into controllers, which will validate what the
>user did, then (possibly) build AR''s from that, or possibly not.
>
>In any case, is there a framework supported way (or at least a common
>pattern) to doing this, and then return some possibly
>fieldname-indexed hash of errors so that the action can re-render the
>page with the appropriate "don''t do that" messages?
>
>I can roll my own, but wanted to use prior art if such exists.
>
>Thanks,
>
>Michael
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