...is defined incorrectly. Raise the attributes hash given to your :reject_if lambda to see if it looks like you expect. If you are nesting forms into nested forms, each...
...a new parent record together with a new child record and will need to save the parent before you can save the child. You can opt to only show the...
When you're using feature branches, they will stack up if you don't delete them after the merge to master. Here's how to tidy them up. Delete feature...
...Find already-merged branches by running # On branch master git branch --merged You may safely delete each of the listed branches, because they point to commits that are contained in...
Applications must be originally written in Objective-C, C, C++, or JavaScript as executed by the iPhone OS WebKit engine...
...the new way to do it, and it's great, especially in combination with Sprockets (or Propshaft on Rails 7). You might be missing some convenience features, though.
...cover one specific issue: Once you have started your development Rails server and esbuild with the --watch option (if you used jsbundling-rails to set up, you probably use bin/dev...
When a user shares your content, a snippet with title, image, link and description appears in her timeline. By default social networks will use the window title, the first image...
...the current URL and some random text snippet for this purpose. This is often not what you want. Luckily Facebook, Twitter, etc. lets you control how your content appears in...
...is how to view what Capybara is rendering. Rendered text (what the user actually sees) puts page.text Prints just the visible text body, completely stripped of HTML tags and hidden...
...cluttered with excessive blank lines, you can easily avoid printing them: puts page.body.gsub(/^\s*$/, '').squeeze("\n") Advanced DOM parsing with Nokogiri If the raw HTML is too massive to read...
...Plotting graphs in Ruby with Gruff, which comes handy for many uses cases, you sometimes might need configuration for more advanced plots, e.g. for academic concerns. Then using Gnuplot, the...
...first academic open source plotting software, might be a good option. There are several wrappers for Ruby available and I mainly looked at one of the two most frequently used...
...enlightenment in order to learn Ruby. The goal is to learn the Ruby language, syntax, structure, and some common functions and libraries. We also teach you culture. Testing is not...
...just something we pay lip service to, but something we live. It is essential in your quest to learn and do great things in the language...
When you create a temporary file (e.g. to store a generated Excel sheet) and try to send it to the browser from a controller, it won't work by default...
...this controller action: class FoosController < ApplicationController def download file = Tempfile.new('foo') file.puts 'foo' file.close send_file file.path end end Accessing this controller action will usually raise a 404 not found...
When ending a Selenium test Capybara resets the browser state by closing the tab, clearing cookies, localStorage, etc. It may be a good idea to wait for all in-flight...
...AJAX requests to finish before ending a scenario: You may have client-side JavaScript that freaks out when the tab closure kills their pending requests. If that JavaScript opens an...
...not be observable by non-jQuery code. This is currently a WONTFIX for jQuery (see closed issues #2476, #3347). Native events always work for everyone Note that if you trigger...
...listeners using jQuery's trigger(). Note that you might use third-party libraries like select2 that use trigger(). If your entire app is written in jQuery and you don't...
Traveling Ruby is a project which supplies self-contained, "portable" Ruby binaries: Ruby binaries that can run on any Linux distribution and any OS X machine. This allows Ruby app...
...to bundle these binaries with their Ruby app, so that they can distribute a single package to end users, without needing end users to first install Ruby or gems...
Follow the installation guidelines at https://mise.jdx.dev/getting-started.html. Remove rbenv configuration Search for rbenv config in .bashrc and .profile and remove it: eval "$(rbenv init - bash)"
...rbenv config in .profile and remove it: source /home/$user/.rbenvrc Remove nvm configuration Search for nvm config in .bashrc and remove it: export NVM_DIR="$HOME/.nvm" [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM...
...posts; if you use pagination the queries will be more complicated, but the point still stands. Looks harmless enough? It is not. The problem ActiveRecord will rewrite this into a...
...query using LEFT JOINs which looks something like this: SELECT "blog_posts".*, "comments".*, "attachments".* FROM "blog_posts" LEFT OUTER JOIN "comments" ON "comments"."blog_post_id" = "blog_posts"."id"
...is a gem for working with daytimes. That's a tuple of (hour, minute second) without a day, month or year. Another additional gem? Thus SQL has a time datatype...
...for storing time of day in the format hh:mm:ss, neither Ruby nor Rails themselves offer an elegant way to deal with day times. Time and DateTime both handle...
window.getSelection().toString(); Browser support: IE9+, Android 4.3+, Safari...
Surprisingly exhaustive new icon set by Google. Available as PNG, SVG and as a icon font. Comment from Henning I tried using the icon set in a project. I found...
...the quality, selection and handling far worse than what we are used to in FontAwesome...
curl http://ipecho.net/plain; echo
The Paper elements are a set of UI elements that implement the material design system...
Impressive set of design guidelines from Google...
Declare an enum attribute where the values map to integers in the database, but can be queried by name.
...the dot-underscore (._foo, ._bar, etc.) files created by (badly-behaved) Mac OS X systems on non-AFP server volumes...
Since we are migrating from our homegrown mixins.sass and helpers.sass to Compass, here is a list of all the mixins provided by Compass...
...about what HTTP was designed for. The original post has been removed for some stupid gender discussion...