本文整理汇总了Python中django.db.migrations.migration.Migration方法的典型用法代码示例。如果您正苦于以下问题：Python migration.Migration方法的具体用法？Python migration.Migration怎么用？Python migration.Migration使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类django.db.migrations.migration的用法示例。
在下文中一共展示了migration.Migration方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: apply_operations
# 需要导入模块: from django.db.migrations import migration [as 别名]
# 或者: from django.db.migrations.migration import Migration [as 别名]
def apply_operations(self, app_label, project_state, operations):
migration = Migration('name', app_label)
migration.operations = operations
with connection.schema_editor() as editor:
return migration.apply(project_state, editor) 示例2: unapply_operations
# 需要导入模块: from django.db.migrations import migration [as 别名]
# 或者: from django.db.migrations.migration import Migration [as 别名]
def unapply_operations(self, app_label, project_state, operations):
migration = Migration('name', app_label)
migration.operations = operations
with connection.schema_editor() as editor:
return migration.unapply(project_state, editor) 示例3: apply_operations
# 需要导入模块: from django.db.migrations import migration [as 别名]
# 或者: from django.db.migrations.migration import Migration [as 别名]
def apply_operations(self, app_label, project_state, operations, atomic=True):
migration = Migration('name', app_label)
migration.operations = operations
with connection.schema_editor(atomic=atomic) as editor:
return migration.apply(project_state, editor) 示例4: unapply_operations
# 需要导入模块: from django.db.migrations import migration [as 别名]
# 或者: from django.db.migrations.migration import Migration [as 别名]
def unapply_operations(self, app_label, project_state, operations, atomic=True):
migration = Migration('name', app_label)
migration.operations = operations
with connection.schema_editor(atomic=atomic) as editor:
return migration.unapply(project_state, editor) 示例5: test_run_python_atomic
# 需要导入模块: from django.db.migrations import migration [as 别名]
# 或者: from django.db.migrations.migration import Migration [as 别名]
def test_run_python_atomic(self):
"""
Tests the RunPython operation correctly handles the "atomic" keyword
"""
project_state = self.set_up_test_model("test_runpythonatomic", mti_model=True)
def inner_method(models, schema_editor):
Pony = models.get_model("test_runpythonatomic", "Pony")
Pony.objects.create(pink=1, weight=3.55)
raise ValueError("Adrian hates ponies.")
atomic_migration = Migration("test", "test_runpythonatomic")
atomic_migration.operations = [migrations.RunPython(inner_method)]
non_atomic_migration = Migration("test", "test_runpythonatomic")
non_atomic_migration.operations = [migrations.RunPython(inner_method, atomic=False)]
# If we're a fully-transactional database, both versions should rollback
if connection.features.can_rollback_ddl:
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
non_atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
# Otherwise, the non-atomic operation should leave a row there
else:
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 0)
with self.assertRaises(ValueError):
with connection.schema_editor() as editor:
non_atomic_migration.apply(project_state, editor)
self.assertEqual(project_state.apps.get_model("test_runpythonatomic", "Pony").objects.count(), 1)
# And deconstruction
definition = non_atomic_migration.operations[0].deconstruct()
self.assertEqual(definition[0], "RunPython")
self.assertEqual(definition[1], [])
self.assertEqual(sorted(definition[2]), ["atomic", "code"])