On Tue, Feb 9, 2010 at 4:03 PM, Ichiro Saga <li...@ruby-forum.com> wrote:
> Hi, there.
> I have two validations in the model:
>
> validates_numericality_of :value, :only_integer=>true,
> :allow_blank=>true
> validates_size_of :value, :is=>9, :message=>"must be 5-digit number",
> :if=>Proc.new{|u| u.value.is_a?(Numeric)}
>
>
Ichiro, you have a bit of duplication within your validates_*. For example,
you're
testing whether or not :value is numeric within both validates_* methods.
Next, the
:is compares the number of bytes and not the number of characters you should
be
able to do the following:
validates_numericality_of :value, :only_integer => true, :allow_blank =>
true # make sure that it's an integer
validate :number_of_digits
# make sure that we have five digits
private
def number_of_digits
unless self.value.to_s.size == 5
errors.add :value, "should be 5 digits"
end
end
Good luck,
-Conrad
> They work as expected except when the :value is character/string like
> "a" "abc", the second validation will also output error message "must be
> 5-digit number". What I want is the second validation displays error
> message only when the :value is a number. I think :if=>Proc.new{|u|
> u.value.is_a?(Numeric)} would take care of it, but it didn't.
>
> The second problem is about the custom validation. I got a very simple
> custom validation. Whenever there is an error, it catches it and shows
> the error message. But the field with error is not highlighted. I
> checked the source of the page, the "fieldwitherror" was not generated
> on the field checked by the custom validation. I tried the
> validation_reflection plugin. It catched the error but there's no error
> message under the field. Normally that's where the message should be.
> I guess they are related but I am not sure what causes it.
>
> Any help will be appreciated.
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