Code Explainers
Code explainers tagged #query-composition
ruby
class Article < ApplicationRecord belongs_to :author, class_name: "User" has_many :taggings, dependent: :destroy has_many :tags, through: :taggings
How scopes compose in Rails
scopes
activerecord
query-composition
Intermediate
8 steps
ruby
class ReportGenerator def initialize(account, period) @account = account @period = period
Memoized report metrics in Ruby in Rails
memoization
query-composition
service-object
Intermediate
7 steps
ruby
class Article < ApplicationRecord belongs_to :author default_scope { where(deleted_at: nil) }
How scopes compose in Rails
scopes
query-composition
activerecord
Intermediate
9 steps