This card compares patterns to store trees in a relation database like MySQL or PostgreSQL. Implementation examples are for the...
The parallel-gem is quite easy to use and can speed up rendering time if you want to render the...
When you load a dump for development, records may reference images that are not available on your machine.
When filling out forms in Selenium tests, Chrome shows the (usual) bubble, asking to store those credentials. While the bubble...
This card is just about creating simple PostgreSQL dumps. This is no instruction for a backup strategy nor a guide...
Hint This applies only to distributions based on Debian. Requirement You need to setup the PostgreSQL Apt Repository first.
This is a visualization of the files that will be generated by some useful rails generators. Invoke a generator from...
on the bash (issued as postgres user) Start/Stop/Restart PostgreSQL pg_ctl -D $configdir start|stop|restart Start/Stop/Restart the corresponding PostgreSQL...
Looks like ActiveState is trying to market a new Ruby distribution for Enterprises: ActiveRuby Enterprise Edition is designed for businesses...
Using VCR to record communication with remote APIs is a great way to stub requests in tests. However, you may...
Add the following to /etc/rc.local: (sleep 3 && echo disable > /proc/acpi/ibm/bluetooth)& Bluetooth icon will be active for a few seconds, then...
Below is a list of some VIM settings I find useful. You can add them to your .vimrc. source $VIMRUNTIME/mswin.vim...
As web developers, we know how easy it is to end up with web page bloat. But loading a webpage...
Just like we use gems on the server, we use third party JavaScript libraries in the browser. These typically provide...
If you have a replication error with MySQL and you know the "error" is okay (e.g. you've executed the...
This error message may occur when rspec gets loaded by rake, e.g. when you migrate the test database. NoMethodError: undefined...
Reminder of what you can do with Geordi. Note: If you alias Geordi to something short like g, running commands...
The rack-contrib gem brings a JSONP middleware that just works™. Whenever a JSON request has a callback parameter, it...
TruffleRuby is an experimental Ruby implementation that tries to achieve ~10x performance over MRI. This has been on our radar...
Sometimes huge refactorings or refactoring of core concepts of your application are necessary for being able to meet new requirements...
TLDR: A function is hard to use when it sometimes returns a promise and sometimes throws an exception. When writing...
A comprehensive introduction to sending HTML emails. Intro: HTML email: Two words that, when combined, brings tears to a developer...
Exercise 1: XML On the start page of your Movie DB, show the title of a random movie that is...
If your Carrierwave uploader dynamically generates the filename (e.g. by incorporating a user's name), you must call model.save! after...