Interuserface | Don’t press any key to continue
Imagine clicking “send” for an email message and watching your message appear in a brief queue. Perhaps it counts down about ten seconds before sending, more than enough time to cancel an erroneous send, but little enough time in the scope of e-mail communication as to not interfere with normal usage.
Related cards:
Guide to localizing a Rails application
Localizing a non-trivial application can be a huge undertaking. This card will give you an overview over the many components that are affected.
When you are asked to give an estimate for the effort involved, go through the list below and check wh...
How to: Upgrade CarrierWave to 3.x
While upgrading CarrierWave from version 0.11.x to 3.x, we encountered some very nasty fails. Below are the basic changes you need to perform and some behavior you may eventually run into when upgrading your application. This aims to save you some...
Differences between transactions and locking
Web applications can be used by multiple users at the same time. A typical application server like Passenger has multiple worker processes for a single app. In a distributed deployment setup like we use at makandra you w...
Lightning Talk: Coverage based Test Case Prioritization in Ruby on Rails
For my computer science bachelor's thesis I programmed and evaluated a CLI Test Case Prioritization (TCP) tool for makandra. It has been written as a Ruby Gem and was tested and evaluated against one Ruby on Rails project....
Customize tokenization of the MySQL FULLTEXT parser
The way MySQL's FULLTEXT tokenizer splits text into word tokens might not always be what you need. E.g. it splits a word at period characters.
Since the tokenizer has near-zero configuration options (minimum word length and stopwords list), you n...
Invoices: How to properly round and calculate totals
While it might seem trivial to implement an invoice that sums up items and shows net, gross and vat totals, it actually involves a lot of rules and caveats. It is very easy to create invoices where numbers don't add up and a few cents are missing....
JavaScript without jQuery (presentation from 2019-01-21)
Summary
- We want to move away from jQuery in future projects
- Motivations are performance, bundle size and general trends for the web platform.
- The native DOM API is much nicer than it used to be, and we can polyfill the missing pieces
- Un...
How to make changes to a Ruby gem (as a Rails developer)
At makandra, we've built a few gems over the years. Some of these are quite popular: spreewald (> 1M downloads), active_type (> 1M downloads), and geordi (> 200k downloads)
Developing a Ruby gem is different from developing Rails applications, w...
Story Checklist Template
This is an story checklist I use to work on stories. For this purpose I extracted several cards related to the makandra process and ported them into a check list...
Rails: Fixing ETags that never match
Every Rails response has a default ETag
header. In theory this would enable caching for multiple requests to the same resource. Unfortunately the default ETags produced b...