Colin,
Thanks man, It worked here. Only to register what I did:
1) Created a :named_scope on my model ( for example:
named_scope :my_test, :conditions { :column1 => true } )
2) On my validate method ( for example: errors.add(:column1, "should
be >= 2") if column1 == true && MyTest.my_test.count > 1 )
Don't know if this the most elegant way to do this but It really
worked.
Thank you.
--
Alberto
On May 21, 12:57 pm, cardinallijr <[email protected]> wrote:
> Colin,
>
> I understood what you suggested about using named scope and I'll try
> thislater. About the concurrency case, I don´t need to worry about it
> because it is a "admin" functionality, so only one user will use this.
>
> Thanks for your help.
>
> --
> Alberto
>
> On May 21, 4:11 am, Colin Law <[email protected]> wrote:
>
>
>
> > No doubt there are neater ways but you could define a named scope that finds
> > all records where column1 is true, then in your validate method if column1
> > for the new record is true and if your named scope.count > 1 then add an
> > error for column1. The named scope is not compulsory, it is just for
> > tidiness.
>
> > You may have to worry about what happens if two people try to update the db
> > at the same time though. I am not sure of the best way to solve that one.
>
> > 2009/5/20 cardinallijr <[email protected]>
>
> > > Hi all,
>
> > > I'm trying to validate my model through equal values occuring a number
> > > of times on the same column. I think that I have to use acustom
> > >validation, right? I tried to use it but had no success.
>
> > > For example, that's the table:
>
> > > class MyTest < ActiveRecord::Migration
> > > def self.up
> > > create_table :mytest do |t|
> > > t.column :name, :string
> > > t.column :column1, :boolean
> > > end
> > > def self.down
> > > drop_table :products
> > > end
> > > end
>
> > > What I need is that when 2 records on the table 'mytest' had column1 =
> > > TRUE (1), and we try to insert a new record with this condition
> > > (column1 = TRUE), an error to this field be added. Please, can you
> > > help me to find a solution for this? Any hint for the model file
> > > (mytest.rb)?
>
> > > Thanks for the help.
>
> > > --
> > > Alberto
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