def test_constraint_creation(self):
class FKC_a(TestModel):
name = CharField()
fkc_deferred = DeferredRelation()
class FKC_b(TestModel):
fkc_a = ForeignKeyField(fkc_deferred)
fkc_deferred.set_model(FKC_a)
with test_db.transaction() as txn:
FKC_b.drop_table(True)
FKC_a.drop_table(True)
FKC_a.create_table()
FKC_b.create_table()
# Foreign key constraint is not enforced.
fb = FKC_b.create(fkc_a=-1000)
fb.delete_instance()
# Add constraint.
test_db.create_foreign_key(FKC_b, FKC_b.fkc_a)
def _trigger_exc():
with test_db.savepoint() as s1:
fb = FKC_b.create(fkc_a=-1000)
self.assertRaises(IntegrityError, _trigger_exc)
fa = FKC_a.create(name='fa')
fb = FKC_b.create(fkc_a=fa)
txn.rollback()
def test_constraint_creation(self):
class FKC_a(TestModel):
name = CharField()
fkc_deferred = DeferredRelation()
class FKC_b(TestModel):
fkc_a = ForeignKeyField(fkc_deferred)
fkc_deferred.set_model(FKC_a)
with test_db.transaction() as txn:
FKC_b.drop_table(True)
FKC_a.drop_table(True)
FKC_a.create_table()
FKC_b.create_table()
# Foreign key constraint is not enforced.
fb = FKC_b.create(fkc_a=-1000)
fb.delete_instance()
# Add constraint.
test_db.create_foreign_key(FKC_b, FKC_b.fkc_a)
def _trigger_exc():
with test_db.savepoint() as s1:
fb = FKC_b.create(fkc_a=-1000)
self.assertRaises(IntegrityError, _trigger_exc)
fa = FKC_a.create(name='fa')
fb = FKC_b.create(fkc_a=fa)
txn.rollback()
def test_doc_example(self):
db = database_initializer.get_in_memory_database()
TweetDeferred = DeferredRelation()
class Base(Model):
class Meta:
database = db
class User(Base):
username = CharField()
favorite_tweet = ForeignKeyField(TweetDeferred, null=True)
class Tweet(Base):
user = ForeignKeyField(User)
message = TextField()
TweetDeferred.set_model(Tweet)
with db.transaction():
User.create_table()
Tweet.create_table()
# SQLite does not support alter + add constraint.
self.assertRaises(
OperationalError,
lambda: db.create_foreign_key(User, User.favorite_tweet))
def test_multiple_refs(self):
person_ref = DeferredRelation()
class Relationship(TestModel):
person_from = ForeignKeyField(person_ref, related_name='f1')
person_to = ForeignKeyField(person_ref, related_name='f2')
class SomethingElse(TestModel):
person = ForeignKeyField(person_ref)
class Person(TestModel):
name = CharField()
person_ref.set_model(Person)
p1 = Person(id=1, name='p1')
p2 = Person(id=2, name='p2')
p3 = Person(id=3, name='p3')
r = Relationship(person_from=p1, person_to=p2)
s = SomethingElse(person=p3)
self.assertEqual(r.person_from.name, 'p1')
self.assertEqual(r.person_to.name, 'p2')
self.assertEqual(s.person.name, 'p3')
def test_doc_example(self):
db = database_initializer.get_in_memory_database()
TweetDeferred = DeferredRelation()
class Base(Model):
class Meta:
database = db
class User(Base):
username = CharField()
favorite_tweet = ForeignKeyField(TweetDeferred, null=True)
class Tweet(Base):
user = ForeignKeyField(User)
message = TextField()
TweetDeferred.set_model(Tweet)
with db.transaction():
User.create_table()
Tweet.create_table()
# SQLite does not support alter + add constraint.
self.assertRaises(
OperationalError,
lambda: db.create_foreign_key(User, User.favorite_tweet))
def test_multiple_refs(self):
person_ref = DeferredRelation()
class Relationship(TestModel):
person_from = ForeignKeyField(person_ref, related_name='f1')
person_to = ForeignKeyField(person_ref, related_name='f2')
class SomethingElse(TestModel):
person = ForeignKeyField(person_ref)
class Person(TestModel):
name = CharField()
person_ref.set_model(Person)
p1 = Person(id=1, name='p1')
p2 = Person(id=2, name='p2')
p3 = Person(id=3, name='p3')
r = Relationship(person_from=p1, person_to=p2)
s = SomethingElse(person=p3)
self.assertEqual(r.person_from.name, 'p1')
self.assertEqual(r.person_to.name, 'p2')
self.assertEqual(s.person.name, 'p3')
class CircularRef1(Model):
circ_ref2 = ForeignKeyField(DeferredRelation('circularref2'),
null=True)
self.change = change
def __getattr__(self, attr):
if attr == "id":
return self.change.logbook.id
if attr == "revision_n":
return list(self.change.logbook.changes).index(self.change)
if attr in ("name", "description", "template", "attributes",
"archived", "parent_id"):
return self.change.get_old_value(attr)
return getattr(self.change.logbook, attr)
DeferredEntry = DeferredRelation()
# class EntrySearch(FTS5Model):
# entry = ForeignKeyField(DeferredEntry)
# content = SearchField()
class MLStripper(HTMLParser):
def __init__(self):
self.reset()
self.strict = False
self.convert_charrefs = True
self.fed = []
def handle_data(self, d):
self.fed.append(d)
return self.first_name + ' ' + self.last_name if self.first_name and self.last_name else self.username class UserRoles(BaseModel): user = ForeignKeyField(User, related_name='roles') role = ForeignKeyField(Role, related_name='users') name = property(lambda self: self.role.name) description = property(lambda self: self.role.description) class MessageType(BaseModel): name = CharField() constructor = CharField() class ConversationType(BaseModel): name = CharField() DeferredLastMessage = DeferredRelation() class Conversation(BaseModel): conversation_type = ForeignKeyField(ConversationType) last_message = ForeignKeyField(DeferredLastMessage, null=True) file = CharField(null=True) class Quotation(BaseModel): parameters = JSONField(null=False) creator = ForeignKeyField(User, null=False, related_name='creator') receiver = ForeignKeyField(User, null=False, related_name='receiver') class TextContent(BaseModel): text = CharField(null = False) class MessageContent(BaseModel):
