如何覆盖Rails的默认迁移生成器模板

我需要覆盖这些迁移模板：

https://github.com/rails/rails/blob/e20dd73df42d63b206d221e2258cc6dc7b1e6068/activerecord/lib/rails/generators/active_record/migration/templates/migration.rb和https://github.com/rails/rails/blob/e20dd73df42d63b206d221e2258cc6dc7b1e6068/ ActiveRecord的/ lib目录/导轨/发电机/ active_record /迁移/模板/ create_table_migration.rb

在我的rails应用程序中，以便他们从rails应用程序而不是gem本身中获取模板。 到目前为止，我已尝试过所有可能的组合，但没有运气。

我尝试过的：

- Rails.root/lib/templates/rails/migration/migration.rb - Rails.root/lib/templates/rails/migration_generator/migration.rb - Rails.root/lib/rails/templates/rails/migration/migration.rb - Rails.root/lib/rails/templates/rails/migration_generator/migration.rb - Rails.root/lib/rails/generators/templates/rails/migration/migration.rb - Rails.root/lib/rails/generators/templates/rails/migration_generator/migration.rb - Rails.root/lib/rails/templates/generators/rails/migration/migration.rb - Rails.root/lib/rails/templates/generators/rails/migration_generator/migration.rb - Rails.root/lib/rails/generators/active_record/migration/templates/migration.rb - Rails.root/lib/rails/generators/active_record/migration_generator/templates/migration.rb - Rails.root/lib/rails/generators/active_record/templates/migration.rb - Rails.root/lib/rails/generators/active_record/templates/migration.rb 

有人能指出我正确的方向吗？

Answer 1

我为我的案例找到了一个解决方法：

我用这个命令创建一个Rails生成器（在我的Rails应用程序目录中） –

 rails g generator my_migrator 

它创建：

 lib/generators/my_migrator/my_migrator.rb lib/generators/my_migrator/templates lib/generators/my_migrator/USAGE 

然后我添加了这段代码，通过将此代码添加到my_generator.rb来扩展我的生成器中的rails迁移生成器：

 require 'rails/generators' require 'rails/generators/active_record' require 'rails/generators/actions/create_migration' class MyGenerator < ActiveRecord::Generators::Base source_root File.expand_path('../templates', __FILE__) argument :attributes, :type => :array, :default => [], :banner => "field[:type][:index] field[:type][:index]" def create_migration_file set_local_assigns! validate_file_name! migration_template @migration_template, "db/migrate/#{file_name}.rb" # more code here as per requirement. end # more code below as per requirement.. end 

在这里发表这篇文章，希望将来有一天会帮助别人。