Rails - Jun 2009 - Find conditions on the model without a new method

I''ve recently implemented an "active" flag on several of my
models in
a very large codebase, and I''d rather not have to go back and change
every Model.find() instance to specify the new conditions - {:active
=> true}

So I was thinking: how can I make the model itself automatically
append that to the conditions passed in?

I tried this, but to no avail:
(in app/models/model.rb)
Class Something < ActiveRecord::Base

# ...

  # Overwriting the find method to exclude anything NOT active.
  def find
    if @conditions.blank?
      @conditions = "active = true"
    else
      @conditions = @conditions + " AND active = true"
    end

    super
  end

# ...
end

Unfortunately, my tests didn''t work.  I went in and set the first row
in my somethings table to be inactive, but find(:first) still returned
it.

I don''t see an activerecord call back like "before_find" or
something
(though I''ve read about, but can''t seem to find documented, an
"after_find").

Does anyone know how I can do this, or is manually editing every
single Model.find instance the only way?

2009/6/12 Phoenix Rising
<PolarisRising-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>
> I''ve recently implemented an "active" flag on several of
my models in
> a very large codebase, and I''d rather not have to go back and
change
> every Model.find() instance to specify the new conditions - {:active
> => true}
>
> So I was thinking: how can I make the model itself automatically
> append that to the conditions passed in?
>
I think default_scope will do what you want here.
For each model:
default_scope :conditions => {:active => true}

I am not sure at which version of rails default_scope was introduced.

Colin

Colin Law wrote:
[...]
> I am not sure at which version of rails default_scope was introduced.
2.3, I believe.
> 
> Colin
Best,
--
Marnen Laibow-Koser
http://www.marnen.org
marnen-sbuyVjPbboAdnm+yROfE0A@public.gmane.org
-- 
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