rake db 所有命令介绍

rake db 所有命令介绍.md

• db:create creates the database for the current env
• db:create:all creates the databases for all envs
• db:drop drops the database for the current env
• db:drop:all drops the databases for all envs
• db:migrate runs migrations for the current env that have not run yet
• db:migrate:up runs one specific migration
• db:migrate:down rolls back one specific migration
• db:migrate:status shows current migration status
• db:migrate:rollback rolls back the last migration
• db:forward advances the current schema version to the next one
• db:seed (only) runs the db/seed.rb file
• db:schema:load loads the schema into the current env’s database
• db:schema:dump dumps the current env’s schema (and seems to create the db as well)
• db:setup runs db:schema:load, db:seed
• db:reset runs db:drop db:setup
• db:migrate:redo runs (db:migrate:down db:migrate:up) or (db:migrate:rollback db:migrate:migrate) depending on the specified migration
• db:migrate:reset runs db:drop db:create db:migrate