CODEWITHSUNDEEP
ruby-on-railsrubyhttp-redirect
Richard_G
Richard_G

Reputation: 4820

Is it possible in Rails to check whether a redirect or render had already been issued?

Ruby 2.0.2, Rails 4.0.3, Sorcery 0.8.5

I tried to issue a redirect in my code, only to receive the error message that a redirect or render had already been issued. If that is the case, I'm happy to return. However, if the method is called for any other reason, I'd like to check to see if a redirect or render had been issued and, if not, issue it. The code is authentication based on Sorcery.

In the application controller, I have:

  def not_authenticated
    redirect_to login_url # , :alert => "First log in to view this page."
  end

This ends up checking for current_user, as follows:

  def current_user
    @current_user ||= @view.current_user unless @view.blank?
    begin
      @current_user ||= Associate.find(session[:user_id]) unless session[:user_id].blank?
    rescue ActiveRecord::RecordNotFound => e
      return
    end
    current_user = @current_user
  end

In the rescue, I'd like to determine whether or not a redirect or render had already occurred, so that I could redirect_to login_url if not. This would mean, of course, that it was called from a different method, which it is. Thanks.

Upvotes: 36

Views: 10825

Answers (1)

spickermann
spickermann

Reputation: 106932

You can call performed? in your controller to check if render or redirect_to has been called already:

performed?               # => false
redirect_to(login_path)
performed?               # => true

Read more about performed? in the Rails docs.

Upvotes: 68

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