Redirecting back doesn't work anymore

I'm having some truble redirecting my users to the previous page.

Here is an example of an update method in the movies controller.

def update
  @movie =开发者_开发问答 Movie.find(params[:id])
  if @movie.update_attributes(params[:movie])
    flash[:notice] = "The given movie is now updated."
  end
  respond_with(@movie, location: :back)
end

I'm getting this error.

undefined method 'hash_for_back_url' for #<Module:0x00000103eeaaa8> on the respond_with line.

I'm using Rails 3.1 rc1 with Ruby 1.9.

It works when doing something like this.

respond_with(@movie, location: request.referer)

Anyone knows why the :back argument won't work?

The only solution that worked for me was the use of request.referer.

Solution #1

respond_with(@comment, location: request.referer)

Solution #2

class ApplicationController < ActionController::Base
  helper_method :redirect_back

  def redirect_back(options = {})
    if request.referer
      redirect_to request.referer, options
    else
      redirect_to root_path, options
    end
  end
end

# View / controller

redirect_back notice: "Sending you back ... hopefully"

In that case respond_with is expecting :location to be the result of a url helper method like in respond_with(@movie, :location => movie_url(@movie))

You probably should be using one of this methods instead:

• redirect to an information page with redirect_to @movie, which is equivalent to redirect_to movie_path(@movie)

• render the form again with the updated data with render :action => :edit (:edit represent the action used to display the form)

How about this:

respond_with @movie do |format|
  format.html { redirect_to :back }
end

Lets you override the default html responder so that you can use redirect_to :back