Commit efdcd13c authored by Carl Meyer's avatar Carl Meyer
Browse files

[1.8.x] Fixed #24628 -- Fixed applied status for squashed migrations. 

Backport of 492537ac from master.
parent c37c6dc4

django/db/migrations/executor.py

+11 −0
Original line number Diff line number Diff line
@@ -110,6 +110,7 @@ class MigrationExecutor(object): 
                self.apply_migration(states[migration], migration, fake=fake, fake_initial=fake_initial)

            else:

                self.unapply_migration(states[migration], migration, fake=fake)

        self.check_replacements()



    def collect_sql(self, plan):

        """
@@ -176,6 +177,16 @@ class MigrationExecutor(object): 
            self.progress_callback("unapply_success", migration, fake)

        return state



    def check_replacements(self):

        """

        Mark replacement migrations applied if their replaced set all are.

        """

        applied = self.recorder.applied_migrations()

        for key, migration in self.loader.replacements.items():

            all_applied = all(m in applied for m in migration.replaces)

            if all_applied and key not in applied:

                self.recorder.record_applied(*key)



    def detect_soft_applied(self, project_state, migration):

        """

        Tests whether a migration has been implicitly applied - that the

django/db/migrations/loader.py

+2 −0
Original line number Diff line number Diff line
@@ -249,6 +249,8 @@ class MigrationLoader(object): 
            # Mark the replacement as applied if all its replaced ones are

            if all(applied_statuses):

                self.applied_migrations.add(key)

        # Store the replacement migrations for later checks

        self.replacements = replacing

        # Finally, make a graph and load everything into it

        self.graph = MigrationGraph()

        for key, migration in normal.items():

docs/releases/1.8.3.txt

+3 −0
Original line number Diff line number Diff line
@@ -47,3 +47,6 @@ Bugfixes 
* Fixed a crash when loading squashed migrations from two apps with a

  dependency between them, where the dependent app's replaced migrations are

  partially applied (:ticket:`24895`).



* Fixed recording of applied status for squashed (replacement) migrations

  (:ticket:`24628`).

tests/migrations/test_executor.py

+26 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ from django.apps.registry import apps as global_apps 
from django.db import connection

from django.db.migrations.executor import MigrationExecutor

from django.db.migrations.graph import MigrationGraph

from django.db.migrations.recorder import MigrationRecorder

from django.db.utils import DatabaseError

from django.test import TestCase, modify_settings, override_settings
@@ -411,6 +412,31 @@ class ExecutorTests(MigrationTestBase): 
            self.assertTableNotExists("author_app_author")

            self.assertTableNotExists("book_app_book")



    @override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_squashed"})

    def test_apply_all_replaced_marks_replacement_as_applied(self):

        """

        Applying all replaced migrations marks the replacement as applied.



        Ticket #24628.

        """

        recorder = MigrationRecorder(connection)

        # Place the database in a state where the replaced migrations are

        # partially applied: 0001 is applied, 0002 is not.

        recorder.record_applied("migrations", "0001_initial")

        executor = MigrationExecutor(connection)

        # Use fake because we don't actually have the first migration

        # applied, so the second will fail. And there's no need to actually

        # create/modify tables here, we're just testing the

        # MigrationRecord, which works the same with or without fake.

        executor.migrate([("migrations", "0002_second")], fake=True)



        # Because we've now applied 0001 and 0002 both, their squashed

        # replacement should be marked as applied.

        self.assertIn(

            ("migrations", "0001_squashed_0002"),

            recorder.applied_migrations(),

        )





class FakeLoader(object):

    def __init__(self, graph, applied):