Custom Dynamic Error Pages In Ruby On Rails
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so that error pages work for all types of requests, not justGET. Normally, 404 and 500 error pages are static HTML files that live in the public directory of a Rails application. These are boring, rails custom error page minimally-styled pages that don’t get the same treatment as the rest of the app. rails exceptions_app This tutorial shows you how to move error pages into your Rails app as dynamic views that benefit from application rails render 404 page styles, layouts, and viewhelpers. tl;dr – jump to the Rails code and the Capistrano bonustip Why are dynamic error pages paticularly handy in Rails4? Starting with Rails 4, the production asset pipeline no
Rails 404 Route
longer generates filenames without cache-busters. This means that referencing /assets/application.css in your static public/404.html page won’t work in a Rails 4 app! The file will not exist in the production environment. The only way to reliably reference your application stylesheet is to use the stylesheet_link_taghelper. But error pages are static HTML pages; they can’t use helpers, right? If you want nice-looking error pages in Rails 4, here are rails 404 page with layout youroptions: Option 1: No external styles. Don’t reference your application stylesheet at all. Instead, use simple, static error pages with the necessary minimal CSS copied and pasted into each HTML file. This is the solution that ships withRails. Works for simple apps that don’t need custom-branded errorpages. Option 2: Monkey patch. Use static error pages and point to /assets/application.css for styling. Then, monkey-patch Rails to restore the pre-Rails 4 behavior so that the asset pipeline generates non-cache-busted filenames in production. Make sure not to send far-future expires headers for thesefiles! Easiest option for migrating an existing app to Rails4. Option 3: Dynamic. Use dynamic view templates (ERB) for error pages, and take advantage of the stylesheet_link_tag helper to get the right cache-busted filename. Error pages can use your application styles. Be careful, though: if your Rails app is down, your error pages can’t beaccessed. Most flexible option. This is the solution I describebelow. OK, so you’re ready to set up dynamic error pages in a Rails 4 app? Here’s how to doit. 1 Generate an errors controller andviews rails generate controller errors not_found internal_server_error This creates app/controllers/errors_controller.rb with corresponding view templates in app/views/errors/ for the not found (404) and inter
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Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it https://mattbrictson.com/dynamic-rails-error-pages only takes a minute: Sign up Rails 4: How do I create a custom 404 page that uses the asset pipeline? up vote 14 down vote favorite 5 There are many solutions for creating customized error handling pages, but almost none for Rails 4: Basic Rails 404 Error Page Dynamic error pages in Rails The standard answer of encouraging people to http://stackoverflow.com/questions/24235805/rails-4-how-do-i-create-a-custom-404-page-that-uses-the-asset-pipeline modify 404.html in /public doesn't work for me because I want to use the CSS theme that resides in the asset pipeline. Is there a way that html files can access those styles defined in the asset pipeline? If not, is there a way to create a custom error handler that has access to the pipeline? ruby-on-rails ruby-on-rails-4 error-handling asset-pipeline share|improve this question asked Jun 16 '14 at 2:01 Avery 2,28372642 I think on your second reference have what do you want. but almost none for Rails 4 , Are you sure the second reference not work on rails 4? What you have done already? –rails_id Jun 16 '14 at 2:35 add a comment| 3 Answers 3 active oldest votes up vote 23 down vote For Rails 4.1 I like this answer, add an asset type better; however I have not tried it. On Rails 4.0.8, these three references helped me: Dynamic error pages is the second reference in the question. This worked just fine for me. Custom error pages may have cribbed from the first refere
1, 2015 Thibault Rails Rails' standard error handling is pretty weak (and ugly) out of the box: If you https://samurails.com/jutsu/rails-jutsu/jutsu-12-custom-error-pages-in-rails-4/ want to keep your app's branding consistent, this article will explain several ways to do it. -- How Rails Handles Exceptions Each time you send a request to a https://salayhin.wordpress.com/2015/04/17/create-custom-error-pages-dynamically-in-ruby-on-rails-4/ website, you'll be presented with a response belonging to one of the following categories: 10x (Informational) 20x (Success) 30x (Redirect) 40x (Not found) 50x (Server fault) If you've been error page developing with the web for any time, you'll undoubtedly be aware of at least the 404 and 500 error responses. These are part of the two response classes which constitute errors - 40x and 50x. The rest demonstrate successful requests. You can read about the different error types on Wikipedia. All web applications have to support these error custom dynamic error messages. They are, after all, responses to requests. You can get good responses (10x / 20x / 30x) and erroneous responses (40x / 50x). The key for us is to make sure we catch the erroneous responses and direct them to our own error pages. The way Rails handles errors is through a middleware hook called exceptions_app. This captures any exceptions coming from Rails, allowing the middleware to create an appropriate response. In short, it's responsible for keeping your web server online if a problem does occur (as opposed to making it crash): This middleware [exceptions.app] rescues any exception returned by the application # and calls an exceptions app that will wrap it in a format for the end user. All the tutorials you find on how to create custom error pages hook into exceptions_app, allowing you to "divert" the user in the way you want. The "quality" of your error handling is dependent on what you do after you've caught the error. This is what we are to discuss: -- Catching erro
You can override this to be any Rack compatible app. To override this you need to add following line in your application.rb file. # config/application.rb config.exceptions_app = self.routes Now we need to create ErrorsController: class ErrorsController < ApplicationController def show @exception = env['action_dispatch.exception'] write_to_log_file render action: request.path[1..-1] end def write_to_log_file if @exception.present? logger.error("Error occured: #{@exception.message}, Status: #{status_code}\n Time: #{Time.now}") end end protected def status_code params[:code] || 500 end end In show method we have added a function to write the exception to log file. Now create templates for each status code in errors directory. I have created three template for 404.html.erb, 422.html.erb and 500.html.erb # app/views/errors/404.html.haml %h1 404 - Not Found Now create route for this errors: # config/routes.rb %w( 404 422 500 ).each do |code| get code, :to => 'errors#show', :code => code end And that's it for dynamic error page. Happy coding🙂 Share this:FacebookTwitterGoogleLinkedInPinterestTumblrEmail Post navigation ← Create RSS from your ruby on railsapplication Error installing rmagick onUbuntu → Leave a Reply Cancel reply Enter your comment here... Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. (LogOut/Change) You are commenting using your Twitter account. (LogOut/Change) You are commenting using your Facebook account. (LogOut/Change) You are commenting using your Google+ account. (LogOut/Change) Cancel Connecting to %s Notify me of new comments via email. Blog Stats 53,485 hits TagsActive admin Apache bash Bit.ly bundle error codeigniter Custom Route Exception GIMP Git Imagemagick javascript LAMP Linux MongoDB MySQL Pandas Paypal Donate PHP5 phpMyAdmin Plugin Python rails rails 3 rails console rails validation RSS Ruby Ruby on Ruby on Rails RVM SEO SFTP twitter bootstrap ubuntu Ubuntu 12.04 ubuntu 14.04 Vim Wamp Web development WIndows Wordpress xdebug