gist: 3876


  
    
      projects_controller.rb #
    
    
      
      
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              def show
  if @project = @user.projects.find_by_name(params[:project_name])
    # congrats, it exists
  elsif project = @user.projects.find_by_old_name(params[:project_name])
    redirect_to project_url(project), :status => :moved_permanently
  end
end
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