本文整理汇总了Python中django.db.models.sql.query.Query.build_where方法的典型用法代码示例。如果您正苦于以下问题：Python Query.build_where方法的具体用法？Python Query.build_where怎么用？Python Query.build_where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.models.sql.query.Query的用法示例。
在下文中一共展示了Query.build_where方法的11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_simple_query
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def test_simple_query(self):
query = Query(Author)
where = query.build_where(Q(num__gt=2))
lookup = where.children[0]
self.assertIsInstance(lookup, GreaterThan)
self.assertEqual(lookup.rhs, 2)
self.assertEqual(lookup.lhs.target, Author._meta.get_field('num'))示例2: _get_condition_sql
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def _get_condition_sql(self, model, schema_editor):
if self.condition is None:
return None
query = Query(model=model)
where = query.build_where(self.condition)
compiler = query.get_compiler(connection=schema_editor.connection)
sql, params = where.as_sql(compiler, schema_editor.connection)
return sql % tuple(schema_editor.quote_value(p) for p in params)示例3: constraint_sql
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def constraint_sql(self, model, schema_editor):
query = Query(model)
where = query.build_where(self.check)
connection = schema_editor.connection
compiler = connection.ops.compiler('SQLCompiler')(query, connection, 'default')
sql, params = where.as_sql(compiler, connection)
params = tuple(schema_editor.quote_value(p) for p in params)
return schema_editor.sql_check_constraint % {'check': sql % params}示例4: test_transform
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def test_transform(self):
query = Query(Author)
with register_lookup(CharField, Lower):
where = query.build_where(~Q(name__lower='foo'))
lookup = where.children[0]
self.assertIsInstance(lookup, Exact)
self.assertIsInstance(lookup.lhs, Lower)
self.assertIsInstance(lookup.lhs.lhs, SimpleCol)
self.assertEqual(lookup.lhs.lhs.target, Author._meta.get_field('name'))示例5: test_multiple_fields
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def test_multiple_fields(self):
query = Query(Item)
where = query.build_where(Q(modified__gt=F('created')))
lookup = where.children[0]
self.assertIsInstance(lookup, GreaterThan)
self.assertIsInstance(lookup.rhs, SimpleCol)
self.assertIsInstance(lookup.lhs, SimpleCol)
self.assertEqual(lookup.rhs.target, Item._meta.get_field('created'))
self.assertEqual(lookup.lhs.target, Item._meta.get_field('modified'))示例6: test_negated_nullable
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def test_negated_nullable(self):
query = Query(Item)
where = query.build_where(~Q(modified__lt=datetime(2017, 1, 1)))
self.assertTrue(where.negated)
lookup = where.children[0]
self.assertIsInstance(lookup, LessThan)
self.assertEqual(lookup.lhs.target, Item._meta.get_field('modified'))
lookup = where.children[1]
self.assertIsInstance(lookup, IsNull)
self.assertEqual(lookup.lhs.target, Item._meta.get_field('modified'))示例7: test_foreign_key_exclusive
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def test_foreign_key_exclusive(self):
query = Query(ObjectC)
where = query.build_where(Q(objecta=None) | Q(objectb=None))
a_isnull = where.children[0]
self.assertIsInstance(a_isnull, RelatedIsNull)
self.assertIsInstance(a_isnull.lhs, SimpleCol)
self.assertEqual(a_isnull.lhs.target, ObjectC._meta.get_field('objecta'))
b_isnull = where.children[1]
self.assertIsInstance(b_isnull, RelatedIsNull)
self.assertIsInstance(b_isnull.lhs, SimpleCol)
self.assertEqual(b_isnull.lhs.target, ObjectC._meta.get_field('objectb'))示例8: test_complex_query
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def test_complex_query(self):
query = Query(Author)
where = query.build_where(Q(num__gt=2) | Q(num__lt=0))
self.assertEqual(where.connector, OR)
lookup = where.children[0]
self.assertIsInstance(lookup, GreaterThan)
self.assertEqual(lookup.rhs, 2)
self.assertEqual(lookup.lhs.target, Author._meta.get_field('num'))
lookup = where.children[1]
self.assertIsInstance(lookup, LessThan)
self.assertEqual(lookup.rhs, 0)
self.assertEqual(lookup.lhs.target, Author._meta.get_field('num'))示例9: test_simplecol_query
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def test_simplecol_query(self):
query = Query(Author)
where = query.build_where(Q(num__gt=2, name__isnull=False) | Q(num__lt=F('id')))
name_isnull_lookup, num_gt_lookup = where.children[0].children
self.assertIsInstance(num_gt_lookup, GreaterThan)
self.assertIsInstance(num_gt_lookup.lhs, SimpleCol)
self.assertIsInstance(name_isnull_lookup, IsNull)
self.assertIsInstance(name_isnull_lookup.lhs, SimpleCol)
num_lt_lookup = where.children[1]
self.assertIsInstance(num_lt_lookup, LessThan)
self.assertIsInstance(num_lt_lookup.rhs, SimpleCol)
self.assertIsInstance(num_lt_lookup.lhs, SimpleCol)示例10: test_foreign_key_f
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def test_foreign_key_f(self):
query = Query(Ranking)
with self.assertRaises(FieldError):
query.build_where(Q(rank__gt=F('author__num')))示例11: test_foreign_key
# 需要导入模块: from django.db.models.sql.query import Query [as 别名]
# 或者: from django.db.models.sql.query.Query import build_where [as 别名]
def test_foreign_key(self):
query = Query(Item)
msg = 'Joined field references are not permitted in this query'
with self.assertRaisesMessage(FieldError, msg):
query.build_where(Q(creator__num__gt=2))