Published inBetter Programming·6 days agoThe Mysterious Time-to-DateTime Conversion: Unraveling Ruby’s Unexpected BehaviorI recently stumbled upon a perplexing discrepancy while converting Time to DateTime using the #to_datetime method. Intrigued by this unexpected behavior, I delved into an investigation to unravel its root cause. I’ll share my findings in this blog post with you, as I believe it’s worth your attention. Introduction I’m currently…Programming3 min readProgramming3 min read
Apr 11From Rails Controller to Business ActionSince the beginning of Ruby on Rails, there have been no built-in solutions for organizing controllers and business logic. I witness engineers/companies still doing the same CRUD controllers that Rails scaffolding shows them to do. While this might be a good approach in some cases, in my experience, most times…Ruby5 min readRuby5 min read
Mar 14Automatic preloading in Rails: the dream that came true.Recently, I published an article about “Stop using manual preloading in your Rails application; use this instead.” Many people were interested, but I failed to explain the ultimate solution. Considering that I still see posts about ActiveRecord includes, I want to elaborate on the idea deeply. If you haven’t read…Ruby5 min readRuby5 min read
Feb 28Stop using manual preloading in your Rails application; use this instead.It’s a popular internet recommendation to use preloading in Ruby on Rails applications to eliminate the N+1 query problem. It may seem like a blessing initially, but it has drawbacks. Gladly, there is a much better solution I want to share with you. Before we dive into the ultimate solution…Ruby3 min readRuby3 min read
Feb 21Ruby Numbers and the Memory: how I got confused.I was suddenly doing a simple task to generate a bunch of random integers. There were no strict requirements, so I was thinking about an upper bound I could put. My gut advised me to come up with a number that could represent various numbers at a reasonable cost. …Ruby3 min readRuby3 min read
Feb 1Ruby on Rails associations can be buggyWhen dealing with has_one associations in the Ruby on Rails ORM framework ActiveRecord, there is a tiny but essential detail. This missing point brought a severe issue in one of the projects I worked on. Unfortunately, resolving the issue afterward took much more work than preventing it from happening. Therefore…Ruby On Rails4 min readRuby On Rails4 min read
Jan 19Uniqueness validation does not work since the beginning of Ruby on Rails.This story is about a problem of uniqueness validation in ActiveRecord (Ruby on Rails default ORM). Even though the issue is quite common, most available guidelines provide incomplete solutions. That is why I want to share how to deal with the problem and ensure it does not come back. Feel…Ruby On Rails4 min readRuby On Rails4 min read
Jan 10How to Ask for Colleagues’ HelpWith the rise of remote work, communication skills are in demand as ever. While we all live in the era of messengers, it is still nontrivial to communicate as efficiently as we can in real life. At the beginning of my career, I suffered from a lack of experience in…Careers4 min readCareers4 min read
Jan 2Kill Indexes of Nulls“Adding an index is a simple solution,” — they say. It is simple, but there is something you should do first. Knowing this could help you maximize the benefit of an index. With the series of database-related articles, we understand when we can apply a cheaper Hash index instead of…Database3 min readDatabase3 min read
Dec 24, 2022Hash index: to be, or not to be?This single SQL query can help you find B-Tree indexes that may become Hash indexes saving you money on storage bills! We recently compared the Hash and B-Tree indexes and learned a lesson about better benchmarking. …Database3 min readDatabase3 min read
