CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3error-handling
FastSolutions
FastSolutions

Reputation: 1829

Create custom Rails error Partial on Homepage

In many cases people want to have separate error pages but in my case I want an custom error page on my homepage.

I found the link http://makandracards.com/makandra/12807-custom-error-pages-in-rails-3-2 this helps to make separate error pages.

Upvotes: 0

Views: 114

Answers (2)

Richard Peck
Richard Peck

Reputation: 76774

I've worked extensively on this, and have created a gem called exceptions_handler to make it easier for people to use

You can see a good tutorial here:

I've also written an exhaustive answer here

--

exceptions_app

The bottom line with your own error pages is to capture the error using the exceptions_app middleware hook in Rails:

config.exceptions_app sets the exceptions application invoked by the ShowExceptionmiddleware when an exception happens. Defaults to ActionDispatch::PublicExceptions.new(Rails.public_path).

As the first answer has posted, you should apply this to your config/application.rb, but I would disagree with sending the request to the routes file directly

--

Controller

A better way is to send the request to a controller action (we use exceptions#show):

#config/application.rb
config.exceptions_app = ->(env) { ExceptionController.action(:show).call(env) }

#app/controllers/exception_controller.rb
class ExceptionController < ActionController::Base

    #Response
    respond_to :html, :xml, :json

#Dependencies
before_action :status

    def show
       render "index"
    end

    private

    def status
      @exception  = env['action_dispatch.exception']
      @status     = ActionDispatch::ExceptionWrapper.new(env, @exception).status_code
      @response   = ActionDispatch::ExceptionWrapper.rescue_responses[@exception.class.name]
    end

end

--

Views

This will allow you to create the following views:

#app/views/application/index.html.erb
<% render partial: "errors" if @status.present? %>

Upvotes: 2

FastSolutions
FastSolutions

Reputation: 1829

So I've made the following to help this:

Routes.rb:

  match '/404', :to => 'home#not_found'
  match '/422', :to => 'home#rejected'
  match '/500', :to => 'home#server_error'

Application.rb

config.exceptions_app = self.routes

Home_controller.rb

  def not_found
    @errors = I18n.t("home.errors.error_404")
    render 'index'
  end

  def rejected
    @errors = I18n.t("home.errors.error_422")
    render 'index'
  end

  def server_error
    @errors = I18n.t("home.errors.error_500")
    render 'index'
  end

On my home/index page:

<%= render :partial => 'errors', :errors => @errors %>

And a simple partial _errors:

<div class="row">
  <% if @errors %>
  <div class="alert alert-wide alert-info">
    <p style="display:inline"><%= @errors %></p>
</div>
<% end %>
</div>

Upvotes: 0

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