Cucumber's docstrings let you add long strings to a step like this: # foo.feature Given this text: """ First line Second line Second Paragraph """ # foo_steps.rb Given /^this text:$/ |docstring| puts docstring.split...
# Does not work: Given this text: """ Docstrings work like this: \"\"\" Docstring example \"\"\" You see? """ Self-made Solution Cucumber Transforms to the rescue! Transforms are run on step arguments after...
There seems to be no way to use therubyracer -v '0.11.4' and libv8 -v '3.11.8.17' on OS X Mavericks. However, running bundle update therubyracer worked for me. It installed therubyracer...
...v '0.12.1' and libv8 -v '3.16.14.3' and I had not side effects. Log of my attempts to get it working Probably you got here when bundling failed building native extensions...
...Ruby. def and define_method differ in which one they use. def Ruby keyword, starts a method definition Opens a new, isolated scope. Variables defined outside are not accessible inside...
...and vice versa. Defines an instance method on the receiver (specified before the method name, e.g. def object.foo); implicit receiver is the default definee The default definee is not self...
For my Gem Session project Holly I ran the Ironman of drag'n...
...drop implementations: Dragging in nested lists User-definable order of items Complicated item elements with super-custom CSS and other Javascript functionality Items that can be both leaves and containers...
has_one :note end class Note < ActiveRecord::Base belongs_to :project end Now say we need a validation that ensures that a description is set (validates_presence_of :description...
...within Note but only if the Project has a flag called external set to true. The following code will lead to some problems as the associated object is not present...
Select2 comes with AJAX support built in, using jQuery's AJAX methods. ... For remote data sources only, Select2 does not create a new element until the item has been selected...
query: params.term, page: params.page || 1 } } processResults: function (data, params) { return data }, } }); Further reading: https://select2.org/data-sources/ajax
When you have a complex recipe setup with multistage deployment you may run into this error: `role_list_from': unknown role `something' (ArgumentError) Consider this task definition: namespace :foo do...
...task :bar, :roles => :something do # do crazy stuff end end Whenever we call foo.bar in our recipe, Capistrano will fail if you deploy to a stage where none of the...
...file, that don't use Ruby's logger utility, it is often useful to sync them. So other process can read the output just in time. Example with enabled sync...
File.read(log_path) #=> "Some log message\nSome other message\n" Example with disabled sync (default) log_path = '/tmp/some_log.log' log_file = File.open(log_path, 'a+') log_file.puts('Some log message')
If you're using Paperclip to store and convert images attached to your models, processing a lot of images will probably cause headache for your system operation colleagues because CPU...
If you're on Unix you can use nice to tell the Kernel scheduler to prefer other processes that request CPU cycles. Keep in mind that this will not...
...using form_for you can give the form's target URL either as a string or an array: form_for(admin_user_path(@user)) do...
# same as:
...path and polymorphic_url If you would like to generate a path or URL string from an array of route components just as form_for does, you can use polymorphic...
...restangular collection and you want to remove an element from it, after you've successfully deleted it from the server. The README suggests to say something like $scope.users = _.without($scope.users...
...horribly when you want to use restangular's attributes on that collection. This is simply because of the way _.without works: It returns a new array with all elements except...
...assignable_values does not invalidate a record even when an attribute value becomes unassignable. See this example about songs: class Song < ActiveRecord::Base belongs_to :artist belongs_to :record_label...
We'll create two record labels with one artist each and create a song for one artist. When we change the song's record label, its artist is still...
...with Xfce's sometimes arcane configuration UI, this can be a huge time waster and super-annoying if you need to get work done the same day. This card describes...
...how to setup a classic panel layout as you might be used to from Gnome 2 or Windows (see screenshot below). You can use this to quickly get productive in...
...a gem and you have a Gemfile in your project directory, you might be surprised that your gem dependencies aren't already required in your specs. Here is some info...
That also means that if you have an embedded Rails app in your spec folder (like has_defaults), and you boot its environment, it should call Bundler.require for you...
...class for the presenter instead of extending objects DCI-style. This allows them to add statically-defined callbacks and validations from ActiveModel with the syntax that we know and love...
...question: We should be clear about why a form model is a better place for screen-specific code than a plain old controller. Weren't controllers originally the place for...
...modify (e.g. add 2px) a Sass variable that defines multiple values as one (e.g. for short-hand CSS definitions such ass padding), you can by using nth. It's ugly...
...While you could split up such variables into multiple values (e.g. combined padding into one for vertical and one for horizontal padding) in your own Sass definitions, when using some...
By default, Devise redirects to a sign-in form when accessing a route that requires authentication. If for some reason you do not want this, but use Basic Authentication (and...
...disable password reset. Note that forcing Basic Auth means there won't be a pretty sign-in form any more which would include a link for sign-up or password...
...a Pull Request on GitHub that includes commits from another Pull Request, you will still see them after the "child" PR has been merged. Unfortunately, GitHub won't automatically update...
Check out the target branch git checkout my-target-branch Make sure you are up to date against origin (e.g. git fetch and git status). You should...
...Its behavior differs from the default JSON.dump or to_json behavior in that it serializes Ruby symbols as ":symbol", and that it doesn't like an ActiveSupport::HasWithIndifferentAccess.
...want it to replace #to_json (but you can always just call Oj.dump explicitely). Security warning: Oj does not escape HTML entities in JSON Be aware that Oj.dump is not...
When you're writing specs for ActiveRecord models that use memoization, a simple #reload will not do: it 'updates on changes' do subject.seat_counts = [5] subject.seat_total.should == 5 # seat_total is...
...either memoized itself, or using some # private memoized method subject.seat_counts = [5, 1] subject.seat_total.reload.should == 6 # => Still 5 end You might be tempted to manually unmemoize any memoized internal method to...
Note that if you plan to downgrade Firefox because your Selenium tests broke after a Firefox upgrade, there is a better way that doesn't involve downgrading. Mozilla has stated...
...that they will no longer provide security patches for any but the most recent versions of Firefox. So running an old Firefox should not be a long-term solution for...
Sometimes, the IRB prints a warning during boot: irb: warn: can't alias source from irb_source. Explanation
...the IRB creates many aliases to give the user quick access to irb functions like source-ing a file. However, if IRB's context already responds to the alias it...
.../.bashrc to have it always available. Adjust to your needs. Usage $> tab_title # title set to the current directory's name $> tab_title new_title # title set to "new_title...
...Auto-setting the title If you want your title to update each time you change the working directory, put this code after the function definition. # auto-title cd() { builtin cd...
Geordi uses parallel_tests if available for running the test suite. To debug an application it is very unhandy to have multiple processes as your terminal I/O will not work...
...as expected once a breakpoint is hit. Even parallel_tests support an option to enable a single process run, it is not possible to pass this option through geordi. But...