hara_yu hara-y-u

hara-y-u / sequential_id.rb

Last active June 8, 2024 07:53

Scoped Sequential ID Concern for Rails Models

	# Usage:
	# This module adds single scoped sequential id on AR model.
	# In your model, include this module like:
	# include SequentialId[:number, scope: :user_id]
	module SequentialId
	def self.[](column_name, scope:)
	options = Struct.new(:column_name, :scope)
	Module.new do
	extend ActiveSupport::Concern
	include SequentialId

hara-y-u / soc_with_custom_callbacks.rb

Last active January 9, 2025 14:24

Separation of Concerns with Rails ActiveRecord custom callbacks

	module Commentable
	extend ActiveSupport::Concern

	included do
	has_many :comments
	define_model_callbacks :comment_update, only: :after
	end
	end

	class Post

hara-y-u / week_index_in_month.rb

Created January 10, 2025 05:15

Calculate week index in month / Rubyで特定日が何番目の週か計算

	require "date"

	# Days from day one to first saturday are result in index 1
	def week_index_in_month(date)
	first_day_of_month = Date.new(date.year, date.month, 1)
	((date.day + first_day_of_month.wday) / 7.0).ceil
	end

	# Days from day one to seven are result in index 1
	def week_index_in_month(date)