Здравствуйте! Помогите пожалуйста разобраться. Столкнулся со странной проблемой.
В шаблон вывожу список названий статей. Пользователь на свое усмотрение может перетаскивать их. Пытась написать юнит тест на вьюху, но она выдает ошибку.
P.S. Ошибка исчезает только если убрать метод
delete_old_article_image в файле models.py. Но данный метод мне нужен в моем проекте, так как я его использую, чтобы удалить старое изображение статьи при обновлении новым. Что происходит не так?
ERROR:Traceback (most recent call last):
File "C:\Users\Nurzhan\PycharmProjects\CA\article\tests.py", line 119, in test_article_sorting
content_type='image/jpeg'
File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\models\manager.py", line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35\lib\site-packages\modeltranslation\manager.py", line 381, in create
return super(MultilingualQuerySet, self).create(**kwargs)
File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\models\query.py", line 399, in create
obj.save(force_insert=True, using=self.db)
File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\models\base.py", line 796, in save
force_update=force_update, update_fields=update_fields)
File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\models\base.py", line 820, in save_base
update_fields=update_fields)
File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35\lib\site-packages\django\dispatch\dispatcher.py", line 191, in send
response = receiver(signal=self, sender=sender, **named)
File "C:\Users\Nurzhan\PycharmProjects\CA\slider\models.py", line 67, in delete_old_article_image
article = Article.objects.get(pk=instance.pk)
File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\models\manager.py", line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "C:\Users\Nurzhan\AppData\Local\Programs\Python\Python35\lib\site-packages\django\db\models\query.py", line 385, in get
self.model._meta.object_name
article.models.DoesNotExist: Article matching query does not exist.
models.py:from django.db.models.signals import pre_save
from django.dispatch import receiver
class Article(models.Model):
head = models.CharField(max_length=200, blank=False)
idx = models.IntegerField(default=0, blank=True)
image = models.ImageField(upload_to='slider/images/%Y/%m/%d/',blank=False,)
@receiver(pre_save, sender=Article)
def delete_old_article_image(sender, instance, *args, **kwargs):
if instance.pk:
article = Article.objects.get(pk=instance.pk)
if instance.image and article.image != instance.image:
slide.image.delete(False)
views.py:class ArticleSortingView(CsrfExemptMixin, JsonRequestResponseMixin, FormView):
def post(self, request, *args, **kwargs):
for pk, idx in self.request_json.items():
Article.objects.filter(pk=pk).update(idx=idx)
return self.render_json_response({'saved': 'OK'})
tests.py:class ArticleTestCase(TestCase):
def setUp(self):
self.client = Client()
self.credentials = {'username': 'user', 'password': 'password'}
self.user = User.objects.create_user(**self.credentials)
self.logged_in = self.client.login(**self.credentials)
self.first_test_image = open(os.path.join(BASE_DIR, 'static/images/tests/test_image_1.png'), "rb")
self.second_test_image = open(os.path.join(BASE_DIR, 'static/images/tests/test_image_2.jpg'), "rb")
def test_article_sorting(self):
first_article = Article.objects.create(
pk=150,
idx=0,
head='First',
image=SimpleUploadedFile(
name=self.first_test_image.name,
content=self.first_test_image.read(),
content_type='image/jpeg'
)
)
second_article = Article.objects.create(
pk=160,
idx=1,
head='Second',
image=SimpleUploadedFile(
name=self.first_test_image.name,
content=self.first_test_image.read(),
content_type='image/jpeg'
)
)
third_article = Article.objects.create(
pk=170,
idx=2,
head='Third',
image=SimpleUploadedFile(
name=self.first_test_image.name,
content=self.first_test_image.read(),
content_type='image/jpeg'
)
)
data = {150: 2, 160: 0, 170: 1}
response = self.client.post(
reverse("article:article_sorting"),
data=json.dumps(data),
content_type='application/json;',
follow=True
)
self.assertEqual(response.content, '{"saved": "OK"}')
self.assertEqual(response.status_code, 200)
first_article.refresh_from_db()
self.assertEquals(first_article.idx, 2)
second_article.refresh_from_db()
self.assertEquals(second_article.idx, 0)
third_article.refresh_from_db()
self.assertEquals(third_article.idx, 1)
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