Question

I use exception_notification gem for handling an errors in an app.
My ApplicationController looks like this:

unless Rails.application.config.consider_all_requests_local
    rescue_from Exception,
                :with => :render_error
    rescue_from ActiveRecord::RecordNotFound,
                :with => :render_not_found
    rescue_from ActionController::RoutingError,
                :with => :render_not_found
    rescue_from ActionController::UnknownController,
                :with => :render_not_found
    rescue_from ActionController::UnknownAction,
                :with => :render_not_found
  end

  def render_not_found(exception)
    ExceptionNotifier::Notifier
      .exception_notification(request.env, exception)
      .deliver
    render :template => "/errors/404.html.erb",
      :layout => 'errors.html.erb'
    return     
  end

  def render_error(exception)
    ExceptionNotifier::Notifier
      .exception_notification(request.env, exception)
      .deliver
    render :template => "/errors/500.html.erb",
           :layout => 'errors.html.erb'
    return
  end

In /config/enviroments/productions.rg in the end of the file I have:

config.middleware.use ExceptionNotifier,
  :email_prefix => "[MY APP| Error Report] ",
  :sender_address => %{"MY APP" <[e-mail]>},
  :exception_recipients => '[e-mail]'
end

when I get the error on the app – eg. Article.find(not-existing-ID), I’ll get the standard error page (ERROR 500) from /public/500.html and not from the file specified in application controller… How is that possible? Past hours I tried to find the problem, but I still don’t know the issue.

Answer 1

This works for me – from application_controller.rb:

unless Rails.application.config.consider_all_requests_local
  rescue_from Exception, with: :render_500
  rescue_from ActionController::RoutingError, with: :render_404
  rescue_from ActionController::UnknownController, with: :render_404
  rescue_from ActionController::UnknownAction, with: :render_404
  rescue_from ActiveRecord::RecordNotFound, with: :render_404
end

and

  private
  def render_404(exception)
    ExceptionNotifier::Notifier.exception_notification(request.env, exception,
      :data => {:User => current_user.full_name, :Email => current_user.email, :UserID => current_user.id}).deliver
    @not_found_path = exception.message
    respond_to do |format|
      format.html { render template: 'pages/404', layout: 'layouts/application', status: 404 }
      format.all { render nothing: true, status: 404}
    end
  end
  def render_500(exception)
    ExceptionNotifier::Notifier.exception_notification(request.env, exception,
      :data => {:User => current_user.full_name, :Email => current_user.email, :UserID => current_user.id}).deliver
    @error = exception
    respond_to do |format|
      format.html { render template: 'pages/500', layout: 'layouts/application', status: 500 }
      format.all { render nothing: true, status: 500}
    end
  end

Note: I have my custom error pages in /app/views/pages. Called 500.html.haml and 404.html.haml

I also have this in my routes.rb (note a hash after ‘pages rather than a forward-slash):

  unless Rails.application.config.consider_all_requests_local
    match '*not_found', to: 'pages#404'
  end

PS. See updated instructions here: http://ramblinglabs.com/blog/2012/01/rails-3-1-adding-custom-404-and-500-error-pages