Ecto SQL v3.2.0 mix ecto.rollback View Source
Reverts applied migrations in the given repository.
Migrations are expected at "priv/YOUR_REPO/migrations" directory
of the current application, where "YOUR_REPO" is the last segment
in your repository name. For example, the repository MyApp.Repo
will use "priv/repo/migrations". The repository Whatever.MyRepo
will use "priv/my_repo/migrations".
You can configure a repository to use another directory by specifying
the :priv
key under the repository configuration. The "migrations"
part will be automatically appended to it. For instance, to use
"priv/custom_repo/migrations":
config :my_app, MyApp.Repo, priv: "priv/custom_repo"
This task runs all pending migrations by default. Runs the last
applied migration by default. To roll back to a version number,
supply --to version_number
. To roll back a specific number of
times, use --step n
. To undo all applied migrations, provide
--all
.
The repositories to rollback are the ones specified under the
:ecto_repos
option in the current app configuration. However,
if the -r
option is given, it replaces the :ecto_repos
config.
If a repository has not yet been started, one will be started outside your application supervision tree and shutdown afterwards.
Examples
mix ecto.rollback
mix ecto.rollback -r Custom.Repo
mix ecto.rollback -n 3
mix ecto.rollback --step 3
mix ecto.rollback --to 20080906120000
Command line options
-r
,--repo
- the repo to rollback--all
- revert all applied migrations--step
/-n
- revert n number of applied migrations--to
- revert all migrations down to and including version--quiet
- do not log migration commands--prefix
- the prefix to run migrations on--pool-size
- the pool size if the repository is started only for the task (defaults to 2)--log-sql
- log the raw sql migrations are running--no-compile
- does not compile applications before rolling back--no-deps-check
- does not check depedendencies before rolling back--migrations-path
- the path to run the migrations from