method
copy
v6.1.3.1 -
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Class: ActiveRecord::Migration
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copy(destination, sources, options = {})
public
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# File activerecord/lib/active_record/migration.rb, line 934 def copy(destination, sources, options = {}) copied = [] schema_migration = options[:schema_migration] || ActiveRecord::SchemaMigration FileUtils.mkdir_p(destination) unless File.exist?(destination) destination_migrations = ActiveRecord::MigrationContext.new(destination, schema_migration).migrations last = destination_migrations.last sources.each do |scope, path| source_migrations = ActiveRecord::MigrationContext.new(path, schema_migration).migrations source_migrations.each do |migration| source = File.binread(migration.filename) inserted_comment = "# This migration comes from #{scope} (originally #{migration.version})\n" magic_comments = +"" loop do # If we have a magic comment in the original migration, # insert our comment after the first newline(end of the magic comment line) # so the magic keep working. # Note that magic comments must be at the first line(except sh-bang). source.sub!(/\A(?:#.*\b(?:en)?coding:\s*\S+|#\s*frozen_string_literal:\s*(?:true|false)).*\n/) do |magic_comment| magic_comments << magic_comment; "" end || break end source = "#{magic_comments}#{inserted_comment}#{source}" if duplicate = destination_migrations.detect { |m| m.name == migration.name } if options[:on_skip] && duplicate.scope != scope.to_s options[:on_skip].call(scope, migration) end next end migration.version = next_migration_number(last ? last.version + 1 : 0).to_i new_path = File.join(destination, "#{migration.version}_#{migration.name.underscore}.#{scope}.rb") old_path, migration.filename = migration.filename, new_path last = migration File.binwrite(migration.filename, source) copied << migration options[:on_copy].call(scope, migration, old_path) if options[:on_copy] destination_migrations << migration end end copied end