我已经为非常简单的博客应用程序编写了几个测试,但是当我运行测试时,多对多关系失败了:./manage.py test myblog
DatabaseError: no such table: myblog_post_tag
然而,当我这样做时./manage.py sql myblog
:
BEGIN;
CREATE TABLE "myblog_tag" (
"id" integer NOT NULL PRIMARY KEY,
"name" varchar(50) NOT NULL
)
;
CREATE TABLE "myblog_post_tag" (
"id" integer NOT NULL PRIMARY KEY,
"post_id" integer NOT NULL,
"tag_id" integer NOT NULL REFERENCES "myblog_tag" ("id"),
UNIQUE ("post_id", "tag_id")
)
;
CREATE TABLE "myblog_post" (
"id" integer NOT NULL PRIMARY KEY,
"title" varchar(200) NOT NULL,
"pub_date" datetime NOT NULL,
"content" text NOT NULL
)
;
COMMIT;
它确实创建了一个表,但在测试时却没有这样做?任何帮助表示赞赏。这是我的测试:
class TagModelTest(TestCase):
def test_create_tags_for_posts(self):
# tests tagging posts, postodd will have tags 1 & 3, posteven will be 2 & 4
postodd = Post(
title="testing odd tags",
pub_date=timezone.now(),
content='''hello everybody, we are testing some tagging
functionality here. This post should have odd tags.''',
)
posteven = Post(
title="test even tags",
pub_date=timezone.now(),
content ='''hello everybody, we are testing some tagging
functionality here. This post should have even tags.''',
)
#save them to db
postodd.save()
posteven.save()
# create the tags
tag1 = Tag(name="1")
tag2 = Tag(name="2")
tag3 = Tag(name="3")
tag4 = Tag(name="4")
# save all tags to db
tag1.save()
tag2.save()
tag3.save()
tag4.save()
# create the many2many relationship
postodd.tag.add(tag1)
如果需要,还有我的 models.py:
from django.db import models
class Tag(models.Model):
name = models.CharField(max_length=50)
def __unicode__(self):
return self.name
class Post(models.Model):
tag = models.ManyToManyField(Tag)
title = models.CharField(max_length=200)
pub_date = models.DateTimeField(verbose_name="Date published")
content = models.TextField()
def __unicode__(self):
return self.title