Accessing request headers in a Rack middleware is primarily done through the env hash, either directly or by wrapping it in a Rack::Request object for convenience and more Ruby-like access patterns....
Recently I decided to begin learning GraphQL because in the past I have worked a lot with REST APIs, and initially based on a lot of info, it seemed like GraphQL was perfect and could be the ultimate successor to REST APIs. However, hands-on experimentation...
Here you have a quick example: Let's begin with the service for that. app/services/format_response_with_active_model_errors.rb [ruby] class FormatResponseWithActiveModelErrors extend ActiveModel::Naming def initialize @errors = ActiveModel::Errors.new(self) end def valid? errors.empty? end attr_reader :errors attr_accessor :response def add_error_message!(field_name:,...
First of all, in some cases, the time spent in that query is really low so maybe, a good way to see if you can improve it is to compare that functionality with the same query after making some tweaks, such as lazy loading, using...
Let's say you want to see where it is declared the method `last` from ActiveRecord, you can do so Just as simple as: [ruby] MyModel.method(:last).source_location [/ruby] There you go...
A really simple retry when exceptions happen in Ruby on Rails as in this example I'm using a `find_by` from ActiveRecord ORM. [ruby] @tries = 5 def find_this_guy sleep 5 my_record = MyModel.find_by!(id: 66, other_boolean_field: true) ...
[ruby] ruby_topics = [ 'Benchmark memory when running a big query or a complex process with Ruby(Especially if you are using Heroku)', 'See how to set up a project to use a database and ActiveRecord in plain Ruby', 'Export a giant CSV file...
[ruby] your_model = User column_names = your_model.column_names - ['created_at', 'updated_at'] # we can ignore some unimportant fields backup_array = [] your_model.find_each(batch_size: 500) do |your_record| p_hash = {} column_names.each do |col_name| p_hash.merge!("#{col_name}" => your_record.send(col_name)) end backup_array << p_hash end [/ruby] This will create an array of...
My test suite is failing due to the latest changes in Google Chrome version (61.xx), seems like something has changed and now you need to manually scroll right/bottom/top if you are using Capybara RSpec or cucumber with selenium driver because if the element is not...
Working recently on a feature for searching I found out that sometimes when I'm creating complex queries we forget to take advantages of ActiveRecord and as a result our SQL queries could be vulnerable to SQL injection, for example, let's say we have a dynamic...