This card shows how to get a Ruby method touch_device? for your Rails views and a method TouchDevice.isPresent() for your Javascripts. Note that we are detecting touch devices...
You can significantly improve performance by adding this to config/initializers/better_errors: if defined?(BetterErrors) && Rails.env.development? module BetterErrorsHugeInspectWarning def inspect_value(obj) inspected = obj.inspect if inspected.size > 20_000 inspected = "Object was...
...this on the top of your config/schedule.rb: job_type :runner, "cd :path && bundle exec rails runner -e :environment ':task' :output...
...disable it in tests, by adding a body class for tests %body{'data-environment' => Rails.env} overriding the transforms [data-environment="test"] * text-transform: none !important
If your Rails application is using Webpack you need to serve assets on the same host as you application runs, otherwise you will see the following errors in your browser...
...in all needed sizes, formats and with the HTML needed to include them! In Rails applications with Haml: put all the favicon files into /public store the HTML to app/views/layouts/_favicon.html...
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Read the Rails Guide about Active Record migrations Understand why we never use models in migrations. Checkout the repository Project Hero and read through some migrations in db/migrate. Find...
...files in the db/migrate folder. Read and understand How to write complex migrations in Rails Discuss with your mentor Instead of migrations, could we simply log into the production server...
Rails is our web framework. Goals Be able to write a simple Rails application. Understand how Rails talks to the database (ActiveRecord) What is a model? How are records retrieved...
...has_many, has_many :through Gain an understanding of the structure of a basic Rails app Routes Controllers Generate a controller using Rails scaffolding Write your own controller Views