What if an error page has an error? Images can also be organized into subdirectories if required, and then can be accessed by specifying the directory's name in the tag: <%= image_tag "icons/rails.png" %> If you're precompiling your assets When a filename is unique and based on its content, HTTP headers can be set to encourage caches everywhere (whether at CDNs, at ISPs, in networking equipment, or in web browsers) This gem wraps UglifyJS (written for NodeJS) in Ruby. http://caribtechsxm.com/rails-4/rails-error-page-asset-pipeline.php
I use .erb Here is app/views/errors/500.html.erb
Our apology. When asset pipelining is enabled, these files are preprocessed and placed in the public/assets directory for serving by either the Rails app or web server.Additional layers of preprocessing can be requested It compresses your code by removing white space and comments, shortening local variable names, and performing other micro-optimizations such as changing if and else statements to ternary operators where possible. Rails 4 Exceptions_app 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
If you open config/environments/development.rb and change config.consider_all_requests_local to be equal to false (then restart your Rails server) you'll see the error pages instead of the debugging ones. And create regular html page - app ... - public - 404.html - images - image1.jpg - image2.jpg - stylesheets - style.css Then in your 404.html you will reference it like Application Setup You'll need to have been following our InstallFest blog posts starting with http://reinteractive.net/posts/32 and have completed http://reinteractive.net/posts/47. There are two caveats: You must not run the Capistrano deployment task that precompiles assets.
Create a file app/controllers/errors_controller.rb which should look like: class ErrorsController < ApplicationController def not_found end end Finally we need to create the view. Your users landing to these pages might get upset, so you certainly want to have a nice looking error page. Rails 4 Custom Error Pages I’d love to hear your questions or comments on this article: just mention me on Twitter or drop me an email. Rails Exceptions_app During the precompilation phase an MD5 is generated from the contents of the compiled files, and inserted into the filenames as they are written to disc.
Today we'll be following directly on from Part 5. The same remarks about ordering made above apply. Query strings in particular do not work at all with some CDNs for cache invalidation. Rails 500 Error Normally, you would subclass Tilt::Template and reimplement the prepare method, which initializes your template, and the evaluate method, which returns the processed source.
For example: config.assets.paths << Rails.root.join("lib", "videoplayer", "flash") Paths are traversed in the order they occur in the search path. The old defaults in the test environment are: config.assets.compile = true, config.assets.compress = false, config.assets.debug = false and config.assets.digest = false.The following should also be added to your Gemfile: gem 'sass-rails', See the next section for information on compiling locally. http://caribtechsxm.com/rails-4/rails-error-pages-gem.php They do not have far-future headers by default, so to get the benefit of fingerprinting you'll have to update your server configuration to add those headers.
Open your browser and navigate to http://localhost:3000/. Browse other questions tagged ruby-on-rails ruby-on-rails-4 error-handling asset-pipeline or ask your own question. git rm public/404.html public/422.html public/500.html git commit -m "Custom error pages" Next Steps If you've come this far and you're interested in more training, or just most posts you've got a module RailsApp class Application < Rails::Application # HTML Assets config.assets.paths << Rails.root.join('app/assets/html') config.assets.register_mime_type('text/html', '.html') end end This adds a new asset search path, app/assets/html, where we can keep all our HTML templates,
Fingerprinting fixes these problems by avoiding query strings, and by ensuring that filenames are consistent based on their content.Fingerprinting is enabled by default for both the development and production environments.