Rails - Jun 2009 - query the :limit => value back out of the schema

Railsters:

My evil colleagues could migrate the :limit=> on an important string at any 
time. (Think Twitter''s infamous string :limit => 140.)

I don''t want to guess that limit and hard-code it into the program; I
want to
read it back out of the ActiveRecord field properties. How to navigate to them?

-- 
   Phlip

Let''s say you have a model Foo, and you want the length of a column
"bar" - then this will do what you want:

Foo.columns.find { |c| c.name == ''bar'' }.limit

--Matt Jones

On Jun 14, 12:01 am, Phlip
<phlip2...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Railsters:
>
> My evil colleagues could migrate the :limit=> on an important string at
any
> time. (Think Twitter''s infamous string :limit => 140.)
>
> I don''t want to guess that limit and hard-code it into the
program; I want to
> read it back out of the ActiveRecord field properties. How to navigate to
them?
>
> --
>    Phlip

Matt Jones wrote:
> Foo.columns.find { |c| c.name == ''bar'' }.limit
Tx it worked! And you can even set a "constant" on it...

-- 
   Phlip