Ruby on Rails

That is true. I'll probably change this.

This doesn't solve my problem though. I realize that I phrased myself a bit odd in my first post I will clarify below.

I have three models, User, Entry, Company

A user belongs to a company

An Entry belongs to the User who creates it.

An entry can also be assigned to another user (think of it like a task). So, I have these relationships in Entry:

  belongs_to :user

  belongs_to :assigned_user, class_name: "User"

The :assigned_user relationship should only be to a user who is related to the same company as :user. I validate it like this:

  def assigned_user_must_be_in_company

    if assigned_user.present? && assigned_user.company_id != user.company_id

      errors.add(:assigned_user, "användaren måste tillhöra samma företag")

    end

  end

Which works OK.

But it would be nice to also have a constraint for this on the relation itself to get the correct users automatically etc.

Den måndagen den 18:e februari 2013 kl. 11:00:21 UTC+1 skrev Colin Law:

On 18 February 2013 09:44, Linus Pettersson <linus.pe...@gmail.com> wrote:
> Hi
>
> I have a model, let's call it entry, that belongs to a user. The user and
> the entry also belongs to a company.
>
> Can I add a condition on the belongs_to relations to check this?
>
> Something like:
> belongs_to :assigned_user, class_name: "User" , conditions: { company_id:
> company_id }
>
> This doesn't work because company is set on the Entry in the create action,
> like this:
> def create
> ...
>   @entry.company = current_user.company

Why have you got Entry belongs_to company?  If it also belongs_to user
and user belongs_to company then you can just say @entry.user.company.
 If you want to be able to say @entry.company then you can use
delegate.

Colin