Sha256: 4fc46f3ad7e415207953fe53439c4503e1a81ff63f5faab61bc3ff588391e962
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Size: 1.74 KB
Versions: 21
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Stored size: 1.74 KB
Contents
module Historiographer
module HistoryMigrationMysql
#
# class CreateAdGroupHistories < ActiveRecord::Migration
# def change
# create_table :ad_group_histories do |t|
# t.histories
# end
# end
# end
#
# t.histories(except: ["name"]) # don't include name column
# t.histories(only: ["name"]) # only include name column
# t.histories(no_business_columns: true) # only add history timestamps and history_user_id; manually add your own columns
#
# Will automatically add user_id, history_started_at,
# and history_ended_at columns
#
def histories(except: [], only: [], no_business_columns: false, index_names: {})
index_names.symbolize_keys!
original_table_name = self.name.gsub(/_histories$/) { }.pluralize
foreign_key = original_table_name.singularize.foreign_key
class_definer = Class.new(ActiveRecord::Base) do
end
class_name = original_table_name.classify
klass = Object.const_set(class_name, class_definer)
original_columns = klass.columns.reject { |c| c.name == "id" || except.include?(c.name) || (only.any? && only.exclude?(c.name)) || no_business_columns }
integer foreign_key.to_sym, null: false
original_columns.each do |column|
opts = {}
opts.merge!(column.as_json.clone)
send(column.type, column.name, opts.symbolize_keys!)
end
datetime :history_started_at, null: false
datetime :history_ended_at
integer :history_user_id
index :history_started_at
index :history_ended_at
index :history_user_id
index foreign_key
ActiveRecord::Base.connection.indexes(original_table_name).each do |index|
index index.columns
end
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems