Rails 3.2 Dynamic Error Pages
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HTML files from the public root, is appropriately simple rails error page for 500 errors where your app may not be
Rails Exceptions_app
capable of rendering a dynamic page, but falls short for less grave errors, especially rails render 404 page the common 404. I’ll often want to render a 404 using my application’s layout so as not to confuse users, include partials such
Rails 404 Page With Layout
as for a search form, and I recently worked on an internationalized app where I wanted to translate the 404 message. Rails will serve localized static pages (e.g. 404.en.html, 404.de.html), but I’d rather keep everything in my locale YAML files and render it with I18n.t('not_found'). rails 4 exceptions_app The Old Ways In the past, I’ve handled this two ways. The simplest was to have a catch-all route at the bottom of routes.rb like match '*a', to: 'static_pages#error_404' so that any request not caught by earlier routes would be directed to an error_404 action which would render the template in static_pages/error_404.html.erb. This worked fine until I needed a catch-all route for something else (dynamic, database-backed pages and redirects), and alas, like the Highlander, there can only be one. So I then changed my strategy to catching 404-like errors in application_controller.rb: unless Rails.application.config.consider_all_requests_local rescue_from ActionController::RoutingError, with: :render_404 rescue_from ActionController::UnknownAction, with: :render_404 rescue_from ActiveRecord::RecordNotFound, wit
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 404 Route
minimally-styled pages that don’t get the same treatment as the rest of the app.
Rails Error Page Gem
This tutorial shows you how to move error pages into your Rails app as dynamic views that benefit from application rails 500 error 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 http://work.stevegrossi.com/2013/04/06/dynamic-error-pages-with-rails-3-2/ 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 https://mattbrictson.com/dynamic-rails-error-pages 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 internal
Sign in Pricing Blog Support Search GitHub This repository Watch 2 Star 5 Fork 1 kwbock/dynamic_errors Code Issues 0 Pull requests 0 Projects 0 Pulse Graphs Dynamic error pages in Rails 25 commits 1 branch https://github.com/kwbock/dynamic_errors 4 releases Fetching contributors MIT Ruby 100.0% Ruby Clone or download Clone with HTTPS Use Git or checkout with SVN using the web URL. Open in Desktop Download ZIP Find file Branch: master Switch branches/tags http://joshsymonds.com/blog/2012/08/13/dynamic-error-pages-corrected Branches Tags master Nothing to show v0.2.0 v0.1.2 v0.1.1 help Nothing to show New pull request Fetching latest commit… Cannot retrieve the latest commit at this time. Permalink Failed to load latest commit information. app/views/errors error page lib test .gitignore Gemfile Gemfile.lock LICENSE.txt README.rdoc Rakefile VERSION dynamic_errors.gemspec README.rdoc dynamic_errors Currently this gem is fairly broken. We are working on updating it to work with the latest minor version of Rails (at the time of this post, 3.2.x). Thank you for your patience. This gem wraps the standard Rails 3 error pages (public/(404|422|500).html) with the applications layout. Any further changes to the application layout will be reflected on the rails error page error pages, preventing having to make layout changes in three places. Installation gem install dynamic_errors Usage add “require 'dynamic_errors'” to environment.rb Create the following views if you wish to override the standard error message errors/404.html.erb errors/422.html.erb errors/500.html.erb Compatibility Currently the gem has only been tested (very briefly at that) with Rails -v3.0.3-7. Rails 2.x may be added if requested. Contributing to dynamic_errors Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it Fork the project Start a feature/bugfix branch Commit and push until you are happy with your contribution Make sure to add tests for it. This is important so I don't break it in a future version unintentionally. Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it. Copyright Copyright © 2011 Kyle Bock. See LICENSE.txt for further details. Contact GitHub API Training Shop Blog About © 2016 GitHub, Inc. Terms Privacy Security Status Help You can't perform that action at this time. You signe