Hi everybody,
I needed change field error rendering for some forms created with Rail’s
form builder. I found solution by changing
ActionView::Base::field_error_
proc to own before form and changing it back after form rendered.
I don’t like this solution 
It’s not thread-safe (but it’s not so
important, nobody really wants it :), but I don’t like it because of I
think it isn’t good object desing.
How complicated would be adding some extra option to formbuilder, like
:form_field_error_proc, that can be propagated down to the
ActiveRecord’s
InstanceTag implementation?
Or have you some other idea how to make this better?
Best regards,
Lukas
On Wednesday, April 10, 2013 9:53:01 AM UTC+1, Lukáš Doležal wrote:
Yuck - I’ve been there before (although I stored the override in
Thread.current so that it was thread safe).
How complicated would be adding some extra option to formbuilder, like
:form_field_error_proc, that can be propagated down to the ActiveRecord’s
InstanceTag implementation?
Or have you some other idea how to make this better? 
Last time the interaction between that and all the various helpers was a
little gnarly. Personally I’ve taken not to using field_error_proc and
just
adding classes on the inputs (or on its enclosing element) to indicate
invalidness. field_error_proc could definitely use some love though
Fred