工場の少年とdjangoをテストする際の外部キーが機能しない

Question

ライブラリファクトリーの少年の外来キーに問題があります。私のテストは実行されません 私は外来キーの問題だと思っています。

私は私が私の工場の少年クラスは

class UserFactoryCustomer(factory.Factory): 

    class Meta: 
     model = User 

    first_name = 'Ahmed' 
    last_name = 'Asadov' 
    username = factory.LazyAttribute(lambda o: slugify(o.first_name + '.' + o.last_name)) 
    email = factory.LazyAttribute(lambda a: '{0}.{1}@example.com'.format(a.first_name, a.last_name).lower()) 
    user_type = 1 
    balance = 10000.00 

class UserFactoryExecutor(factory.Factory): 

    class Meta: 
     model = User 

    first_name = 'Uluk' 
    last_name = 'Djunusov' 
    username = factory.LazyAttribute(lambda o: slugify(o.first_name + '.' + o.last_name)) 
    email = factory.LazyAttribute(lambda a: '{0}.{1}@example.com'.format(a.first_name, a.last_name).lower()) 
    user_type = 2 
    balance = 5000.00 


class TaskFactory(factory.Factory): 

    class Meta: 
     model = Task 

    title = factory.Sequence(lambda n: 'Title {}'.format(n)) 
    description = factory.Sequence(lambda d: 'Description {}'.format(d)) 
    cost = 5000.00 
    assignee = factory.SubFactory(UserFactoryExecutor) 
    created_by = factory.SubFactory(UserFactoryCustomer) 

どのように見えるかである工場の少年とそれをテストする方法を私のコードを見て

class Task(models.Model): 
    title = models.CharField(max_length=255, verbose_name='Заголовок') 
    description = models.CharField(max_length=255, verbose_name='Описание') 
    cost = models.DecimalField(max_digits=7, decimal_places=2, default=0, verbose_name='Цена') 
    assignee = models.ForeignKey('users.User', related_name='assignee', null=True, verbose_name='Исполнитель') 
    created_by = models.ForeignKey('users.User', related_name='created_by', verbose_name='Кем был создан') 

    def __str__(self): 
     return self.title 

ようになるuser.modelsであるユーザモデルをテストしよう私のテストの一例である

は

class ApiModelTestCase(TestCase): 

    def test_creating_models_instance(self): 
     executor = factories.UserFactoryExecutor() 
     customer = factories.UserFactoryCustomer() 
     Task.objects.create(title="Simple Task", description="Simple Description", cost="5000.00", 
          assignee=executor, created_by=customer) 

これはどのように私のミス

012です

ERROR: test_creating_models_instance (tests.test_models.ApiModelTestCase) 

Traceback (most recent call last): 
    File "/Users/heartprogrammer/Desktop/freelance-with-api/freelance/tests/test_models.py", line 12, in test_creating_models_instance 
    assignee=executor, created_by=customer) 
    File "/Users/heartprogrammer/Documents/envs/freelance/lib/python3.6/site-packages/django/db/models/manager.py", line 85, in manager_method 
    return getattr(self.get_queryset(), name)(*args, **kwargs) 
    File "/Users/heartprogrammer/Documents/envs/freelance/lib/python3.6/site-packages/django/db/models/query.py", line 394, in create 
    obj.save(force_insert=True, using=self.db) 
    File "/Users/heartprogrammer/Documents/envs/freelance/lib/python3.6/site-packages/django/db/models/base.py", line 763, in save 
    "unsaved related object '%s'." % field.name 
ValueError: save() prohibited to prevent data loss due to unsaved related object 'assignee'. 

Answer 1

このエラーは、譲受人インスタンスが保存されていないことを示します。この

class ApiModelTestCase(TestCase): 

    def test_creating_models_instance(self): 
     executor = factories.UserFactoryExecutor.create() 
     customer = factories.UserFactoryCustomer.create() 
     Task.objects.create(title="Simple Task", description="Simple Description", cost="5000.00", 
          assignee=executor, created_by=customer) 

アップデートしてみてください。あなたはDjangoのモデルで作業する場合、あなたはfactory.django.DjangoModelFactoryを使用する必要が

を - それ以外の場合は、factory_boyは "シンプルなPythonのオブジェクト" アプローチを採用しています。 https://github.com/FactoryBoy/factory_boy/issues/329

だから、factory.django.DjangoModelFactoryで

from factory.django import DjangoModelFactory 

class UserFactoryCustomer(DjangoModelFactory): 

    class Meta: 
     model = User 

    first_name = 'Ahmed' 
    last_name = 'Asadov' 
    username = factory.LazyAttribute(lambda o: slugify(o.first_name + '.' + o.last_name)) 
    email = factory.LazyAttribute(lambda a: '{0}.{1}@example.com'.format(a.first_name, a.last_name).lower()) 
    user_type = 1 
    balance = 10000.00 

class UserFactoryExecutor(DjangoModelFactory): 

    class Meta: 
     model = User 

    first_name = 'Uluk' 
    last_name = 'Djunusov' 
    username = factory.LazyAttribute(lambda o: slugify(o.first_name + '.' + o.last_name)) 
    email = factory.LazyAttribute(lambda a: '{0}.{1}@example.com'.format(a.first_name, a.last_name).lower()) 
    user_type = 2 
    balance = 5000.00