Re: [Rails] validates_numercality_of with allow_nil.

On 19 June 2011 21:26, Bill Felton <subscriptions@cagttraining.com> wrote:
>
> On Jun 19, 2011, at 2:43 PM, Mauro wrote:
>
>> On 19 June 2011 13:43, Bill Felton <subscriptions@cagttraining.com> wrote:
>>>
>>> On Jun 19, 2011, at 7:23 AM, Mauro wrote:
>>>
>>>> In the model I have:
>>>>
>>>> validates :square_meters_public_land, :barrier_meters, :numericality
>>>> => { :greater_than_or_equal_to => 0 }, :allow_nil => true
>>>>
>>>> but if, in the field, on create, I don't insert a value I have the
>>>> error "field is not a number".
>>>
>>>
>>> Include the :allow_blank option if the fields are not required.
>>> I generally think about this in terms of "specifying a validation always includes :required; if that's not what I want, I have to include :allow_blank".
>>
>> That's ok, they are numeric fields I thought that allow_nil should be ok.
>
> I would have expected :allow_nil to work, but apparently it's giving problems?  FWIW, I always tend to think in terms of :allow_blank rather than :allow_nil.  Perhaps an artifact of my years in Smalltalk?
> If :allow_nil isn't working, as I gather from the posts that appeared before mine (after I posted, but long before mine showed up), have you tried :allow_blank?  Does that work better, worse, or no different?

allow_blank works.

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