ar_internal_metadata table 是在生产中创建的吗？
Is ar_internal_metadata table created in production?
我想知道我是否需要创建迁移以在 Rails 5
的生产环境中创建 ar_internal_metadata
它基本上是一个安全开关，以复杂化和改变 Rails 应用程序的部署方式为代价：
Rails 5 has added a new table ar_internal_metadata to store environment version which is used at the time of migrating the database.
When the first time rake db:migrate is executed then new table stores the value production. Now whenever we load database schema or database structure by running rake db:schema:load or rake db:structure:load Rails will check if Rails environment is production or not. If not then Rails will raise an exception and thus preventing the data wipeout.
来源：http://blog.bigbinary.com/2016/06/07/rails-5-prevents-destructive-action-on-production-db.html
我想知道我是否需要创建迁移以在 Rails 5
的生产环境中创建ar_internal_metadata
它基本上是一个安全开关，以复杂化和改变 Rails 应用程序的部署方式为代价：
Rails 5 has added a new table
ar_internal_metadatato store environment version which is used at the time of migrating the database.When the first time
rake db:migrateis executed then new table stores the valueproduction. Now whenever we load database schema or database structure by running rakedb:schema:loadorrake db:structure:loadRails will check if Rails environment isproductionor not. If not then Rails will raise an exception and thus preventing the data wipeout.
来源：http://blog.bigbinary.com/2016/06/07/rails-5-prevents-destructive-action-on-production-db.html