Question

I have a form:

<%= form_for(@message) do |f| %>

That’s located in my groups#show page. What I want to do is build an association with the current user, message id and current group. I have nailed the first two just fine with the following code in my MessagesController but I know I’m trying to find my @group_id after the params have been changed:

def create
  @message = Message.new(:message => params[:message],
  :source => "web")

  respond_to do |format|
    if @message.save
      current_user.envelopes.create!(:user_id => current_user.id, :group_id => @group_id, :message_id => @message.id)
      format.html { redirect_to(group_path(@group_id), :notice => 'Message was sent.') }
    else
      format.html { render :action => "new" }
    end
  end
end

What I want to know is where should I catch the @group_id so that when they send a message the envelopes association is created and the user is redirected back to the group page they were just one (with the new message there now).

Thanks a lot!

Answer 1

If i’ve understood your problem correctly, you could stick the Group Id into the form as a hidden field:

<%= f.hidden_field :group_id, :value => @group %>