本文整理汇总了Python中django.db.migrations.AlterIndexTogether方法的典型用法代码示例。如果您正苦于以下问题：Python migrations.AlterIndexTogether方法的具体用法？Python migrations.AlterIndexTogether怎么用？Python migrations.AlterIndexTogether使用的例子？那么, 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的用法示例。
在下文中一共展示了migrations.AlterIndexTogether方法的7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: _test_create_alter_foo_delete_model
# 需要导入模块: from django.db import migrations [as 别名]
# 或者: from django.db.migrations import AlterIndexTogether [as 别名]
def _test_create_alter_foo_delete_model(self, alter_foo):
"""
CreateModel, AlterModelTable, AlterUniqueTogether/AlterIndexTogether/
AlterOrderWithRespectTo, and DeleteModel should collapse into nothing.
"""
self.assertOptimizesTo(
[
migrations.CreateModel("Foo", [("name", models.CharField(max_length=255))]),
migrations.AlterModelTable("Foo", "woohoo"),
alter_foo,
migrations.DeleteModel("Foo"),
],
[],
) 示例2: test_create_alter_index_delete_model
# 需要导入模块: from django.db import migrations [as 别名]
# 或者: from django.db.migrations import AlterIndexTogether [as 别名]
def test_create_alter_index_delete_model(self):
self._test_create_alter_foo_delete_model(migrations.AlterIndexTogether("Foo", [["a", "b"]])) 示例3: _test_alter_alter_model
# 需要导入模块: from django.db import migrations [as 别名]
# 或者: from django.db.migrations import AlterIndexTogether [as 别名]
def _test_alter_alter_model(self, alter_foo, alter_bar):
"""
Two AlterUniqueTogether/AlterIndexTogether/AlterOrderWithRespectTo
should collapse into the second.
"""
self.assertOptimizesTo(
[
alter_foo,
alter_bar,
],
[
alter_bar,
],
) 示例4: test_alter_alter_index_model
# 需要导入模块: from django.db import migrations [as 别名]
# 或者: from django.db.migrations import AlterIndexTogether [as 别名]
def test_alter_alter_index_model(self):
self._test_alter_alter_model(
migrations.AlterIndexTogether("Foo", [["a", "b"]]),
migrations.AlterIndexTogether("Foo", [["a", "c"]]),
) 示例5: test_create_alter_index_field
# 需要导入模块: from django.db import migrations [as 别名]
# 或者: from django.db.migrations import AlterIndexTogether [as 别名]
def test_create_alter_index_field(self):
self._test_create_alter_foo_field(migrations.AlterIndexTogether("Foo", [["a", "b"]])) 示例6: test_alter_index_together_remove
# 需要导入模块: from django.db import migrations [as 别名]
# 或者: from django.db.migrations import AlterIndexTogether [as 别名]
def test_alter_index_together_remove(self):
operation = migrations.AlterIndexTogether("Pony", None)
self.assertEqual(operation.describe(), "Alter index_together for Pony (0 constraint(s))") 示例7: test_alter_index_together
# 需要导入模块: from django.db import migrations [as 别名]
# 或者: from django.db.migrations import AlterIndexTogether [as 别名]
def test_alter_index_together(self):
"""
Tests the AlterIndexTogether operation.
"""
project_state = self.set_up_test_model("test_alinto")
# Test the state alteration
operation = migrations.AlterIndexTogether("Pony", [("pink", "weight")])
self.assertEqual(operation.describe(), "Alter index_together for Pony (1 constraint(s))")
new_state = project_state.clone()
operation.state_forwards("test_alinto", new_state)
self.assertEqual(len(project_state.models["test_alinto", "pony"].options.get("index_together", set())), 0)
self.assertEqual(len(new_state.models["test_alinto", "pony"].options.get("index_together", set())), 1)
# Make sure there's no matching index
self.assertIndexNotExists("test_alinto_pony", ["pink", "weight"])
# Test the database alteration
with connection.schema_editor() as editor:
operation.database_forwards("test_alinto", editor, project_state, new_state)
self.assertIndexExists("test_alinto_pony", ["pink", "weight"])
# And test reversal
with connection.schema_editor() as editor:
operation.database_backwards("test_alinto", editor, new_state, project_state)
self.assertIndexNotExists("test_alinto_pony", ["pink", "weight"])
# And deconstruction
definition = operation.deconstruct()
self.assertEqual(definition[0], "AlterIndexTogether")
self.assertEqual(definition[1], [])
self.assertEqual(definition[2], {'name': "Pony", 'index_together': {("pink", "weight")}})