Question

If I have a class called Group, and in that class I have a
has_many :users

I want to add a method to the Group class to see if a specific user is in that group. If I’m using the Devise authentication I can call the current_user.

So I guess my first question would be can I call that current_user from the model, or do I need to pass it to the method?

My second question is I should be able to do something like the following?

  def has_access?
    !current_user.nil && users.where(:id == current_user.id).count(:id) > 0
  end

Answer 1

You can’t call current_user in models – it’s only available within the scope of controllers and views.

Which means your method’s going to look a little different – perhaps try the following:

def has_access?(user)
  user.present? && users.where(:id => user.id).any?
end