Geordi is now (partially) tested with Cucumber. Yay! geordi cucumber supports a new @solo tag. Scenarios tagged with @solo...
Using Scenic, you can bring the power of SQL views to your Rails application without having to switch your schema...
Ever wondered how you can create a simple table output in bash? You can use the tool column for creating...
SELECT pg_database.datname as "database_name", pg_database_size(pg_database.datname)/1024/1024 AS size_in_mb FROM pg_database ORDER...
PostgreSQL offers a really handy field type: json. You can store any JSON there, in any structure. While its flexibility...
rack-mini-profiler is a powerful Swiss army knife for Rack app performance. Measure SQL queries, memory allocation and CPU...
If you have many connections to your MySQL or MariaDB (as we have) you might want to filter the list...
I recommend to go straight to 2.1.5+ without intermediate steps. Otherwhise you burden yourself with unnecessary work of encoding problems...
Table of contents of the linked article: What are Web Fonts? Advantages of Web Fonts Disadvantages of Web Fonts
PostgreSQL's array data type is pretty useful, but manipulating values of arrays can be awkward because of its syntax...
Our applications not only need to be functional, they need to be fast. But, to quote Donald Knuth, premature optimization...
What is a Cookie? Google it if you do not know. How are cookies transferred between your browser and...
Some tasks in a web application are better not done live when a user request a page, but in the...
When working with PostgreSQL, you can use pgAdmin as a GUI. While you can do most things just like on...
Understand how nested attributes appear in the params. See how the Rails form helpers encode the names of nested...
Many of our clients can't or don't want to design their user interfaces. In the absence of a...
For each movie in MovieDB, we want to track which other movie it was inspired by. For...
It smells. Rethink your code design. Code example with makandra/has_defaults: class Post < ActiveRecord::Base has_defaults tags: [] # field in db...
Built-in matchers Get an overview of all the matchers that are built into RSpec. Play with some of...
If you need a postgresql extension for your database it isn't a good idea to give your applications database...
Read the Rails Guide about Active Record migrations Understand why we never use models in migrations. Checkout the repository...
In a web application you often need to move data between the client (HTML, Javascript) and the server (Ruby, Rails...
Use form models to handle this problem Or soften the validation to validates_presence_of :parent
Web security basics Einführung in die Web Security 🇩🇪 provides essentials for the topic of this card. Read following chapters: