移除导轨中的模型(与"rails g model Title ..."相反) [英] Removing a model in rails (reverse of "rails g model Title...")

问题描述

rails g model Rating user_id:integer message:string value:integer

如何完全删除此模型?谢谢

How can I completely remove this model? Thanks

推荐答案

bundle exec rake db:rollback    
rails destroy model <model_name>

生成模型时，它将创建数据库迁移.如果在该模型上运行"destroy"，它将删除迁移文件，但不会删除数据库表.因此，在运行之前

When you generate a model, it creates a database migration. If you run 'destroy' on that model, it will delete the migration file, but not the database table. So before run

bundle exec rake db:rollback

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