Tracking my programming and life learning
One more on our clean code series (I think every post I make is about clean code, at least I do my best). The last one was about the Null Object Pattern. Today will be about the Extract Value Object. class SummaryCard attr_accessor :reviews def initialize(attributes = {}) @stars = attributes.fetch(:stars, nil) @reviews ||= review_scores […]
Read More Extract Value ObjectAnother one, follows from the clean code series I am making. The last post was about Extract Class. Today we are going to talk about the Null Object Pattern and how we can implement it in ruby. Below we have an example of a music platform subscription pattern with the classes: class User include ActiveModel::Model […]
Read More Null Object PatternAttention! This article assumes you have at least a basic understanding of Ruby on Rails In Ruby on Rails there is a good convention with partials. If you have a controller named BooksController and on the view (we call view but it is a template), when you call the partial /books/_article.html.erb inside the views folder […]
Read More Remove render controller prefix on RailsI needed to get something from the database in my job. I tried the current query using PSequel and it gave an error. SELECT * FROM declarations WHERE data->>’some_data’ IS NOT NULL; The way I got the results was through the console with the following: bundle exec rails console declarations_ids = [] Declaration.find_each do |d| […]
Read More JSONb with Ruby on RailsSo, I was working and found this nice idea on the code base about using the find for mail dunnings. This will be simplified to the max in order to keep the post short. In the Payments table we have the following columns: payment_reminder_sent_at first_dunning_sent_at last_dunning_sent_at What this code do is, find in the current […]
Read More find in RubyI was facing a challenge in an API I am building by taking a boolean from a request by an APP through the headers, as some of you might know it comes from as a string and I created a method that would return the boolean: def string_to_bool(string) return true if string == ‘true’ false […]
Read More Cast types to boolean on Ruby on RailsToday, while doing a calendar I found a module on Rails called Holidays. I will use the Rails console to demonstrate: bundle exec rails c Loading development environment (Rails 5.0.1) [1] pry(main)> Holidays.on(Date.tomorrow, :pt) => [{:date=>Wed, 01 Nov 2017, :name=>”Dia de Todos-os-Santos”, :regions=>[:pt]}] [2] pry(main)> Holidays.on(Date.today, :pt) => []
Read More Holidays helper in Ruby on RailsAt work I had a small issue that just happened once and I couldn’t figure out why it didn’t work. The problem was a helper that truncated the text when it had more than 900 words in it and left JavaScript link that would show all the text. In this particular case something happened to […]
Read More Escaping HTML with Ruby on RailsIn a previous post that I talked about backups, there was something cool that I did. The project had text images with gradient and the client asked to change it to some text that could be put on the back office. I had two options, the first given to me was to see which gradients […]
Read More Gradient text with Ruby on RailsHi, it’s been some time since the last post. Lots of work and excuses. Today I will present a challenge that I had in a new project. The client wanted the original dimensions when uploading images. So I made a private method to extract it with the help of ImageMagick’s Geometry module. First, add new […]
Read More Get image dimensions with Paperclip in Rails
Train to Development 