Static error pages To add a few basic styles to the default error pages in Rails, just edit the default...
...Tue, 09 Oct 2018 In most of the cases it would be better to use Date.strptime as you can provide a date or time pattern to match against. Date.strptime('Foobar...
...very nasty fails. Below are the basic changes you need to perform and some behavior you may eventually run into when upgrading your application. This aims to save you some...
...in your uploaders... def extension_white_list %w[jpg jpeg gif png] end must become def extension_allowlist %w[ jpg jpeg png gif ] end Also, every uploader must define allowlists...
...helper in many views, but in the index view I hide the label to better fit the layout. Here is the helper: module IconHelper def icon(*args, &block) options = args.extract...
It's not a good idea to leave data objects mutable. They should behave like integers. Ruby's Data would have already enforced that. Because I used a regular...
...attr}=" do |value| if @readonly raise 'Readonly' else super(value) end end end Weird behavior changes from composed_of The method composed_of accepts the option :mapping, which is required...
...or use a more mature solution like Webpack. Modules shared between entry points always become chunks When two entry points import the same module, that module automatically a separate file...
...a way to set a minimum file size for chunking, or to control chunking behavior per import. However there is currently no configuration at all. Modules imported by multiple entry...
...I am really pleased with it -- but only on a desktop computer. Have you benchmarked the framework also on smartphones and tablets? Unfortunately I must say, that it does not...
...as a jQuery collection: let $element = $(element) An API object to call additional JavaScript behavior added by a library: var player = flowplayer($element) player.play() Framework activation layers (like Angular directives...
...confident about upgrading Rails, have a look at Rails LTS. How many update steps? Besides the Rails upgrade itself, you might also want to upgrade your other gems and upgrade...
...many cases updating to the highest subversion of the specific rails version is the best choice (e.g. when updating to rails 5 you would update to 5.2.8.12), since the most...
When Paperclip attachments should only be downloadable for selected users, there are three ways to go. The same applies to...
When working with feature branches, stale branches pile up over time. It's best to remove them right after merge, locally and on the remote, but it is a little...
if [[ "$merged_branch_name" =~ ^(master|main|production|Fast-forward)$ ]]; then exit 0 fi # Begin output echo " " echo "> You have just merged the branch \"$merged_branch_name\" into \"$branch_name...
...with power comes responsibility. Code comments can go wrong in many ways: they may become outdated, silently move away from the code they're referring to, restate the obvious, or...
...a comment, prefer improving the code: use descriptive variable/method names, extract more variables/methods to better describe what is happening, have a simple structure. However, there are things code cannot express...
...your commits are the changes. Never use merge. You've found some code that belongs to an earlier commit in your feature branch If you already have a "final" (i.e...
git rebase -i master Move the fixup directly below the commit it belongs to. Change the "pick" in front of the fixup commit to "f". Don't touch...
...instead of downloading and bundling font files yourself. (See below for a list of benefits.) Usage Go to fontsource.org and search for the font you want to add (or a...
...s Fontsource details page for available settings. Why? Using an NPM package has some benefits over placing fonts into your repo: All font weights and glyphs are included.
...the "space" character class For matching whitespaces in a regular expression, the most common and best-known shorthand expression is probably \s. It matches the following whitespace characters: " " (space)
...future we will be able to transition to display: none by using the transition-behavior: allow-discrete property. This will delay the display change until the transition ends. This is...
Do not pass times to date attributes. Always convert times to dates when your application uses time zones. Background
Getting an entire test suite green can be a tedious task which involves frequent switches between the CLI that is...
CSS transitions are a simple animation framework that is built right into browsers. No need for Javascript here. They're...
I often see the use of || to set a default value for a variable that might be nil, null or...
Starting with Ruby 1.9, most #each methods can be called without a block, and will return an enumerator. This is...
...from using fixtures over FactoryBot, as fixtures load essential test data upfront at the beginning of the testsuite. Finding peace with fixtures While setting up the database upfront challenges the...
...idea of maintaining a perfectly clean database state at the beginning of each test, with some disciplined practices, handling fixtures becomes quite manageable. Let’s dive into how this works...
end end def allowed_mime_types %w(image/jpeg image/png) end end This will behave like the solution before: User#portrait will get an expected error message and the User...
...Yourself (or DRY). In Ruby on Rails we keep our code DRY by sharing behavior by using inheritance, modules, traits or partials. When you reuse behavior you want to reuse...
...module that you include in the Cucumber world. This way the module's methods become available to all step definitions. Think of it as enhancing your Capybara API with app...
Expecting a primitive value as an argument to a method invocation is easy: expect(object).to receive(:foo).with('arg1...