When running a migration with `ENV["SCOPE"]` set returns a warning
if no migrations ran.
The message serves as a hint for the end-user to make sure he knows
that the migration have been filtered by `SCOPE`.
Apart from specific versioning support, our tests should focus on the
behaviour of whatever version they're accompanying, regardless of when
they were written.
Application code should *not* do this.
These files get modified whenever someone uses a tool like `sed`. Let's
just get this over with in one commit so it'd not adding diff noise to
something else.
Pending work on graceful app upgrades.
Revert "Merge pull request #8439 from joshsusser/fixes"
This reverts commit ce8ac39338f86388e70356b3a470b3ea443802ae, reversing
changes made to b0e7b6f67c984d4b1502e801781ed75fad681633.
Revert "Merge pull request #8431 from joshsusser/schemadump"
This reverts commit 036d3e1c2b65c4b8cbd23de2e20ad67b9b756182, reversing
changes made to 0c692f4d121792117b6a71e5ed590a31c3b9d12e.
Revert "Merge branch 'joshsusser-master' into merge"
This reverts commit 0c692f4d121792117b6a71e5ed590a31c3b9d12e, reversing
changes made to 2e299fca715b083a60222a85e48f9d3b8dd8ce93.
Conflicts:
activerecord/CHANGELOG.md
activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
activerecord/test/cases/schema_dumper_test.rb
49ebe51 fixed copying migrations, but existing migrations would still
trigger warnings. The proper way to compare migrations is to ignore
origin lines - if migration is identical it means that we can
silently skip it, regardless where it comes from.
The purpose of this change is to allow copying fail on the same names.
Migrations change database and they should be treated with caution,
if 2 migrations are named the same it's much better to skip migration
and allow user decide if it should be copied or not.
ActiveRecord::Migration#copy allows to copy migrations from one place
to another, changing migrations versions and adding scope to filename.
For example:
ActiveRecord::Migration.copy("db/migrate",
:blog_engine => "vendor/gems/blog/db/migrate")
will copy all migrations from vendor/gems/blog/db/migrate to db/migrate
with such format:
Versions of copied migrations will be reversioned to be appended after
migrations that already exists in db/migrate
