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from __future__ import unicode_literals
from sqlalchemy import create_engine, ForeignKey
from sqlalchemy.schema import MetaData, Table, Column, ColumnDefault
from sqlalchemy.types import String, Integer, Numeric, Date, Text, Enum, Boolean, DateTime
from sqlalchemy.orm import sessionmaker, relationship, backref
from sqlalchemy.ext.declarative import declarative_base
from unittest import TestCase
from wtforms.compat import text_type, iteritems
from wtforms.ext.sqlalchemy.fields import QuerySelectField, QuerySelectMultipleField
from wtforms import Form, fields
from wtforms.ext.sqlalchemy.orm import model_form, ModelConversionError, ModelConverter
from wtforms.validators import Optional, Required
from tests.common import DummyPostData, contains_validator
class LazySelect(object):
def __call__(self, field, **kwargs):
return list((val, text_type(label), selected) for val, label, selected in field.iter_choices())
class Base(object):
def __init__(self, **kwargs):
for k, v in iteritems(kwargs):
setattr(self, k, v)
class AnotherInteger(Integer):
"""Use me to test if MRO works like we want"""
class TestBase(TestCase):
def _do_tables(self, mapper, engine):
metadata = MetaData()
test_table = Table(
'test', metadata,
Column('id', Integer, primary_key=True, nullable=False),
Column('name', String, nullable=False),
)
pk_test_table = Table(
'pk_test', metadata,
Column('foobar', String, primary_key=True, nullable=False),
Column('baz', String, nullable=False),
)
Test = type(str('Test'), (Base, ), {})
PKTest = type(str('PKTest'), (Base, ), {
'__unicode__': lambda x: x.baz,
'__str__': lambda x: x.baz,
})
mapper(Test, test_table, order_by=[test_table.c.name])
mapper(PKTest, pk_test_table, order_by=[pk_test_table.c.baz])
self.Test = Test
self.PKTest = PKTest
metadata.create_all(bind=engine)
def _fill(self, sess):
for i, n in [(1, 'apple'), (2, 'banana')]:
s = self.Test(id=i, name=n)
p = self.PKTest(foobar='hello%s' % (i, ), baz=n)
sess.add(s)
sess.add(p)
sess.flush()
sess.commit()
class QuerySelectFieldTest(TestBase):
def setUp(self):
engine = create_engine('sqlite:///:memory:', echo=False)
self.Session = sessionmaker(bind=engine)
from sqlalchemy.orm import mapper
self._do_tables(mapper, engine)
def test_without_factory(self):
sess = self.Session()
self._fill(sess)
class F(Form):
a = QuerySelectField(get_label='name', widget=LazySelect(), get_pk=lambda x: x.id)
form = F(DummyPostData(a=['1']))
form.a.query = sess.query(self.Test)
self.assertTrue(form.a.data is not None)
self.assertEqual(form.a.data.id, 1)
self.assertEqual(form.a(), [('1', 'apple', True), ('2', 'banana', False)])
self.assertTrue(form.validate())
form = F(a=sess.query(self.Test).filter_by(name='banana').first())
form.a.query = sess.query(self.Test).filter(self.Test.name != 'banana')
assert not form.validate()
self.assertEqual(form.a.errors, ['Not a valid choice'])
def test_with_query_factory(self):
sess = self.Session()
self._fill(sess)
class F(Form):
a = QuerySelectField(get_label=(lambda model: model.name), query_factory=lambda: sess.query(self.Test), widget=LazySelect())
b = QuerySelectField(allow_blank=True, query_factory=lambda: sess.query(self.PKTest), widget=LazySelect())
form = F()
self.assertEqual(form.a.data, None)
self.assertEqual(form.a(), [('1', 'apple', False), ('2', 'banana', False)])
self.assertEqual(form.b.data, None)
self.assertEqual(form.b(), [('__None', '', True), ('hello1', 'apple', False), ('hello2', 'banana', False)])
self.assertFalse(form.validate())
form = F(DummyPostData(a=['1'], b=['hello2']))
self.assertEqual(form.a.data.id, 1)
self.assertEqual(form.a(), [('1', 'apple', True), ('2', 'banana', False)])
self.assertEqual(form.b.data.baz, 'banana')
self.assertEqual(form.b(), [('__None', '', False), ('hello1', 'apple', False), ('hello2', 'banana', True)])
self.assertTrue(form.validate())
# Make sure the query is cached
sess.add(self.Test(id=3, name='meh'))
sess.flush()
sess.commit()
self.assertEqual(form.a(), [('1', 'apple', True), ('2', 'banana', False)])
form.a._object_list = None
self.assertEqual(form.a(), [('1', 'apple', True), ('2', 'banana', False), ('3', 'meh', False)])
# Test bad data
form = F(DummyPostData(b=['__None'], a=['fail']))
assert not form.validate()
self.assertEqual(form.a.errors, ['Not a valid choice'])
self.assertEqual(form.b.errors, [])
self.assertEqual(form.b.data, None)
class QuerySelectMultipleFieldTest(TestBase):
def setUp(self):
from sqlalchemy.orm import mapper
engine = create_engine('sqlite:///:memory:', echo=False)
Session = sessionmaker(bind=engine)
self._do_tables(mapper, engine)
self.sess = Session()
self._fill(self.sess)
class F(Form):
a = QuerySelectMultipleField(get_label='name', widget=LazySelect())
def test_unpopulated_default(self):
form = self.F()
self.assertEqual([], form.a.data)
def test_single_value_without_factory(self):
form = self.F(DummyPostData(a=['1']))
form.a.query = self.sess.query(self.Test)
self.assertEqual([1], [v.id for v in form.a.data])
self.assertEqual(form.a(), [('1', 'apple', True), ('2', 'banana', False)])
self.assertTrue(form.validate())
def test_multiple_values_without_query_factory(self):
form = self.F(DummyPostData(a=['1', '2']))
form.a.query = self.sess.query(self.Test)
self.assertEqual([1, 2], [v.id for v in form.a.data])
self.assertEqual(form.a(), [('1', 'apple', True), ('2', 'banana', True)])
self.assertTrue(form.validate())
form = self.F(DummyPostData(a=['1', '3']))
form.a.query = self.sess.query(self.Test)
self.assertEqual([x.id for x in form.a.data], [1])
self.assertFalse(form.validate())
def test_single_default_value(self):
first_test = self.sess.query(self.Test).get(2)
class F(Form):
a = QuerySelectMultipleField(
get_label='name', default=[first_test],
widget=LazySelect(), query_factory=lambda: self.sess.query(self.Test)
)
form = F()
self.assertEqual([v.id for v in form.a.data], [2])
self.assertEqual(form.a(), [('1', 'apple', False), ('2', 'banana', True)])
self.assertTrue(form.validate())
class ModelFormTest(TestCase):
def setUp(self):
Model = declarative_base()
student_course = Table(
'student_course', Model.metadata,
Column('student_id', Integer, ForeignKey('student.id')),
Column('course_id', Integer, ForeignKey('course.id'))
)
class Course(Model):
__tablename__ = "course"
id = Column(Integer, primary_key=True)
name = Column(String(255), nullable=False)
# These are for better model form testing
cost = Column(Numeric(5, 2), nullable=False)
description = Column(Text, nullable=False)
level = Column(Enum('Primary', 'Secondary'))
has_prereqs = Column(Boolean, nullable=False)
started = Column(DateTime, nullable=False)
grade = Column(AnotherInteger, nullable=False)
class School(Model):
__tablename__ = "school"
id = Column(Integer, primary_key=True)
name = Column(String(255), nullable=False)
class Student(Model):
__tablename__ = "student"
id = Column(Integer, primary_key=True)
full_name = Column(String(255), nullable=False, unique=True)
dob = Column(Date(), nullable=True)
current_school_id = Column(Integer, ForeignKey(School.id), nullable=False)
current_school = relationship(School, backref=backref('students'))
courses = relationship(
"Course",
secondary=student_course,
backref=backref("students", lazy='dynamic')
)
self.School = School
self.Student = Student
self.Course = Course
engine = create_engine('sqlite:///:memory:', echo=False)
Session = sessionmaker(bind=engine)
self.metadata = Model.metadata
self.metadata.create_all(bind=engine)
self.sess = Session()
def test_auto_validators(self):
student_form = model_form(self.Student, self.sess)()
assert contains_validator(student_form.dob, Optional)
assert contains_validator(student_form.full_name, Required)
def test_include_pk(self):
form_class = model_form(self.Student, self.sess, exclude_pk=False)
student_form = form_class()
assert ('id' in student_form._fields)
def test_exclude_pk(self):
form_class = model_form(self.Student, self.sess, exclude_pk=True)
student_form = form_class()
assert ('id' not in student_form._fields)
def test_exclude_fk(self):
student_form = model_form(self.Student, self.sess)()
assert ('current_school_id' not in student_form._fields)
def test_include_fk(self):
student_form = model_form(self.Student, self.sess, exclude_fk=False)()
assert ('current_school_id' in student_form._fields)
def test_convert_many_to_one(self):
student_form = model_form(self.Student, self.sess)()
assert isinstance(student_form.current_school, QuerySelectField)
def test_convert_one_to_many(self):
school_form = model_form(self.School, self.sess)()
assert isinstance(school_form.students, QuerySelectMultipleField)
def test_convert_many_to_many(self):
student_form = model_form(self.Student, self.sess)()
assert isinstance(student_form.courses, QuerySelectMultipleField)
def test_convert_basic(self):
self.assertRaises(TypeError, model_form, None)
self.assertRaises(ModelConversionError, model_form, self.Course)
form_class = model_form(self.Course, exclude=['students'])
form = form_class()
self.assertEqual(len(list(form)), 7)
assert isinstance(form.cost, fields.DecimalField)
assert isinstance(form.has_prereqs, fields.BooleanField)
assert isinstance(form.started, fields.DateTimeField)
def test_only(self):
desired_fields = ['id', 'cost', 'description']
form = model_form(self.Course, only=desired_fields)()
self.assertEqual(len(list(form)), 2)
form = model_form(self.Course, only=desired_fields, exclude_pk=False)()
self.assertEqual(len(list(form)), 3)
def test_no_mro(self):
converter = ModelConverter(use_mro=False)
# Without MRO, will not be able to convert 'grade'
self.assertRaises(ModelConversionError, model_form, self.Course, self.sess, converter=converter)
# If we exclude 'grade' everything should continue working
F = model_form(self.Course, self.sess, exclude=['grade'], converter=converter)
self.assertEqual(len(list(F())), 7)
class ModelFormColumnDefaultTest(TestCase):
def setUp(self):
Model = declarative_base()
def default_score():
return 5
class StudentDefaultScoreCallable(Model):
__tablename__ = "course"
id = Column(Integer, primary_key=True)
name = Column(String(255), nullable=False)
score = Column(Integer, default=default_score, nullable=False)
class StudentDefaultScoreScalar(Model):
__tablename__ = "school"
id = Column(Integer, primary_key=True)
name = Column(String(255), nullable=False)
# Default scalar value
score = Column(Integer, default=10, nullable=False)
self.StudentDefaultScoreCallable = StudentDefaultScoreCallable
self.StudentDefaultScoreScalar = StudentDefaultScoreScalar
engine = create_engine('sqlite:///:memory:', echo=False)
Session = sessionmaker(bind=engine)
self.metadata = Model.metadata
self.metadata.create_all(bind=engine)
self.sess = Session()
def test_column_default_callable(self):
student_form = model_form(self.StudentDefaultScoreCallable, self.sess)()
self.assertEqual(student_form._fields['score'].default, 5)
def test_column_default_scalar(self):
student_form = model_form(self.StudentDefaultScoreScalar, self.sess)()
assert not isinstance(student_form._fields['score'].default, ColumnDefault)
self.assertEqual(student_form._fields['score'].default, 10)
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