Rails - Nov 2006 - AR converts params to integer

Hello.

It seems like AR is auto-converting the string from form into an
integer (for an attribute of an integer column). However, for custom
validation I don''t want it to do this - I want to have access to the
actual string.

I create the model like this:

@model = Model.new(params[:model])

Yet, in Model, logger.info column_name shows 5
(params[:model][:column_name] = 5.6).

Any clues on how to change this?

Thanks a lot,

Mark


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On 1 November 2006 14:58, mserms-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
wrote:
> It seems like AR is auto-converting the string from form into an
> integer (for an attribute of an integer column). However, for custom
> validation I don''t want it to do this - I want to have access to
the
> actual string.
>
> I create the model like this:
>
> @model = Model.new(params[:model])
>
> Yet, in Model, logger.info column_name shows 5
> (params[:model][:column_name] = 5.6).
>
> Any clues on how to change this?
You should use column_name_before_type_cast reader to get raw data that user 
has supplied. It is described in AR docs:
= Accessing attributes before they have been typecasted
...
This is especially useful in validation situations where the user might supply 
a string for an integer field and you want to display the original string 
back in an error message. Accessing the attribute normally would typecast the 
string to 0, which isn’t what you want.
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Thanks a lot Maxim, that''s exactly what I''d missed.

Mark

On Nov 2, 8:24 am, Maxim Kulkin
<maxim.kul...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On 1 November 2006 14:58, mse...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
wrote:> It seems like AR is auto-converting the string from form into an
> > integer (for an attribute of an integer column). However, for custom
> > validation I don''t want it to do this - I want to have access
to the
> > actual string.
>
> > I create the model like this:
>
> > @model = Model.new(params[:model])
>
> > Yet, in Model, logger.info column_name shows 5
> > (params[:model][:column_name] = 5.6).
>
> > Any clues on how to change this?You should use
column_name_before_type_cast reader to get raw data that user
> has supplied. It is described in AR docs:
>
> = Accessing attributes before they have been typecasted
> ...
> This is especially useful in validation situations where the user might
supply
> a string for an integer field and you want to display the original string
> back in an error message. Accessing the attribute normally would typecast
the
> string to 0, which isn''t what you want.

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