Scope is all about where something is visible. It’s all about what (variables, constants, methods) is available to you...
You should prefer native promises to jQuery's Deferreds. Native promises are much faster than their jQuery equivalent. Native promises...
Native promises have no methods to inspect their state. You can use the promiseState function below to check whether a...
You can use local copies of gems in your Gemfile like this: gem 'spreewald', path: '~/gems/spreewald' As soon as you...
Use Traim to build a RESTful API for your ActiveRecord models with very little code. Traim assumes your API resources...
Sometimes you add Paperclip image styles, sometimes you remove some. In order to only keep the files you actually need...
In the ruby shell (IRB) and rails console the return value of the previous command is saved in _ (underscore). This...
ImageMagick can automatically crop surrounding transparent pixels from an image: convert input.png -trim +repage output.png
I often see the use of || to set a default value for a variable that might be nil, null or...
You can not use the hash_including argument matcher with a nested hash: describe 'user' do let(:user) { {id: 1...
Follow the instructions here. PRs at makandra/rubocop-config are welcome. Also check the issue tracker. RubyMine Since version 2017-1 RubyMine...
Capybara clears cookies before each scenario, but not other client-side data stores. If your app is using localStorage or...
ActiveRecord::RecordNotFound errors provide quite meaningful error messages that can provide some insight on application details. Consider the following:
Rails 5 (don't know about the others) comes with an initializer wrap_parameters.rb. Here you can tell rails to wrap...
Put the line below in the respective env.rb file to make your action controllers raise an ActionController::UnpermittedParameters error when...
When using geordi for integration tests you might get the following error when trying to run geordi cucumber:
First, go to the webinterface of your phone. Choose Software Update in the navigation on the left. Next, you have...
If your Snom 300 always keeps the same volume for headset and ringtone (as soon as you change one you...
You can configure a Ubuntu system as a gateway in order to share it's internet connection (maybe via WLAN...
select2 is a great jQuery library to make (large) fields more usable. For Bootstrap 3 there is select2-bootstrap-theme...
Capistrano has the concept of a "rollback" that comes in really handy in case of errors. When you notice that...
Webpack is the future. We're using it in our latest Rails applications. For tests, we want to compile assets...
I needed to make sure that an element is visible and not overshadowed by an element that has a higher...
When storing a file with Carrierwave, it is always cached prior to actually storing it (to support form roundtrips).