Question

I just watched the railscasts for multistep forms, and I now have a multistep form that works great when creating a new instance, but updating and editing does not work, it does the multistep but when I click continue on the last step it just does not update, and it seems the session gets lost…

This is the controller… If I use

session[:location_params].deep_merge!(params[:location]) if params[:location]

an error happens that states that deep_merge cannot be done…

  def edit
    @location = Location.find(params[:id])
    session[:location_params] = @location
    @location.current_step = session[:location_step] = @location.steps.first
  end

  def update
    @location = Location.find(params[:id])
    @location.current_step = session[:location_step]
    if params[:back_button]
      @location.previous_step
    elsif @location.last_step?
      @location.save if @location.all_valid? and @location.changed?
    else
      @location.next_step
    end
    session[:location_step] = @location.current_step
    if @location.created_at_changed?
      flash[:success] = "Location updated!"
      session[:location_step] = session[:location_params] = nil
      redirect_to @location
    else
      render 'edit'
    end
  end

Thank you for your help and guidance.

Answer 1

I ended up using FormToWizard jquery library, you can download it here.

Its cleaner and makes the views very clean to work with and easily maintenable, does not change anything on the controllers!