rake db:migrate # Migrate the database through scripts in db/migrate. rake db:migrate:down # Runs the "down" for a given migration VERSION. rake db:migrate:redo # Rollbacks the database one migration and re migrate up. rake db:migrate:reset # Resets your database using your migrations ...
rake db:migrate # Migrate the database through scripts in db/migrate. rake db:migrate:down # Runs the "down" for a given migration VERSION. rake db:migrate:redo # Rollbacks the database one migration and re migrate up. rake db:migrate:reset # Resets your database using your migrations ...
db use AdminSetCreateService to create default admin set Sep 22, 2021 documentation prepare release 5.0.1 Mar 30, 2024 lib Support for Fcrepo 6 in Valkyrie (#6976) Dec 24, 2024 spec Support for Fcrepo 6 in Valkyrie (#6976) Dec 24, 2024 ...
rake db:migrate Run the sample Run the following command in your CLI to start the application. rails server Open a browser and browse tohttp://localhost:3000. Code of conduct This project has adopted theMicrosoft Open Source Code of Conduct. For more information see theCode of Conduct FAQor...
我们可以把迁移看做数据库的新“版本”。数据库模式一开始并不包含任何内容,之后通过一个个迁移来添加或删除数据表、字段和记录。Active Record知道如何沿着时间线更新数据库模式,使其从任何历史版本更新为最新版本。Active Record还会更新db/schema.rb文件,以匹配最新的数据库结构。
rails g migration add_avatars_to_users avatars:string rails db:migrate Note: JSON datatype doesn't exists in SQLite adapter, that's why you can use a string datatype which will be serialized in model.Open your model file and mount the uploader:...
rails3.1之后产生了一个新的方法change,主要用来创建表和列,不用写一对up和down了,使用rake db:rollback回滚的时候数据库不用down方法也知道如何做了。 1.1.migration提供了很多的方法 add_column add_index change_column change_table create_table drop_table ...
sudo docker compose down --volumes # Delete all data and images in your Danbooru instance. sudo docker image prune # Clean up all unused Docker images. rm -rf ~/danbooru # Delete the Danbooru code. Installation See the Docker Guide for more information on running Danbooru using Docker. This...
rake db:rollback 如果你需要执行一个指定的migration的up或down方法,那么你可以用db:migrate:up和db:migrate:down这两个任务。你只需指定版本号,就可以触发它的up或down方法: $ rake db:migrate:up VERSION=20080906120000 以上会执行20080906120000这个版本的migration的up方法。它会去确认这个migration之前有 没有跑...
Sections 4 - 7: Alpha blog - CRUD functions, multiple resources, authentication system built from scratch, front-end using Bootstrap, one-to-many and many-to-many associations at DB layer, production deployment! Compatible with both Rails 4 and 5 (with repositories on each version). Built us...