Standard web form that maps directly onto a model (Lets say “user”
I want to add ajax validation so that when the user exits each field a
little request is fired off, the field is validated and if it doesn’t
then the error message is displayed above the field.
I don’t want to duplicate the validations setup in te model. What I want
is to validate the field against the respective validates_ rules in the
model that may or may not exist.
Can you call specific validations for a model? What I would envisage is
returns error message if validation fails
result = User.validate_the_field(params[:field], params[:value])
render the result etc etc
That was my original plan but as yous said it is rather intensive and I
don’t like the idea of creating a new instance of a model and running
the full validation to just to check one field, I was hoping someone
much cleverer than me had writtena plugin or gem that does the
check_user_attribute stuff directly since this doesn’t seem like a
totally unique case.
I am still not liking the idea of creating a User.new, maybe I’ll be
crazy and delve into the validators themselves and see how they tick.
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