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在我的模型类我加入元类有关详细细节，但运行 蟒蛇manage.py makemigrations它显示错误后 我的模型类是Django的模型无效元语法
从django.db进口车型
# Create your models here.
class Category(models.Model):
"""Category model."""
title = models.CharField(max_length=100)
slug = models.SlugField(_(unique=True)
class Meta:
verbose_name = 'category'
verbose_name_plural = 'categories'
db_table = 'blog_categories'
ordering = ('title',)
def __str__(self):
return u'%s' % self.title
@permalink
def get_absolute_url(self):
return ('blog_category_detail', None, {'slug': self.slug})
class Post(models.Model):
"""Post model."""
STATUS_CHOICES = (
(1, 'Draft'),
(2, 'Public'),
)
title = models.CharField(max_length=200)
slug = models.SlugField(unique_for_date='publish')
author = models.ForeignKey(User, blank=True, null=True)
body = models.TextField()
tease = models.TextField(blank=True, help_text=_('Concise text suggested. Does not appear in RSS feed.'))
status = models.IntegerField(choices=STATUS_CHOICES, default=2)
allow_comments = models.BooleanField(default=True)
publish = models.DateTimeField(default=datetime.datetime.now)
created = models.DateTimeField(auto_now_add=True)
modified = models.DateTimeField(auto_now=True)
categories = models.ManyToManyField(Category, blank=True)
tags = TagField()
objects = PublicManager()
class Meta:
verbose_name = 'post'
verbose_name_plural ='posts'
db_table = 'blog_posts'
ordering = ('-publish',)
get_latest_by = 'publish'
def __str__(self):
return u'%s' % self.title
@permalink
def get_absolute_url(self):
return ('blog_detail', None, {
'year': self.publish.year,
'month': self.publish.strftime('%b').lower(),
'day': self.publish.day,
'slug': self.slug
})
def get_previous_post(self):
return self.get_previous_by_publish(status__gte=2)
def get_next_post(self):
return self.get_next_by_publish(status__gte=2)
class BlogRoll(models.Model):
"""Other blogs you follow."""
name = models.CharField(max_length=100)
url = models.URLField()
sort_order = models.PositiveIntegerField(default=0)
class Meta:
ordering = ('sort_order', 'name',)
verbose_name = 'blog roll'
verbose_name_plural = 'blog roll'
def __str__(self):
return self.name
def get_absolute_url(self):
return self.url
和错误之后：
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/site-packages/django/core/management/__init__.py", line 351, in execute_from_command_line
utility.execute()
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/site-packages/django/core/management/__init__.py", line 325, in execute
django.setup()
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/site-packages/django/__init__.py", line 18, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/site-packages/django/apps/registry.py", line 108, in populate
app_config.import_models(all_models)
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/site-packages/django/apps/config.py", line 198, in import_models
self.models_module = import_module(models_module_name)
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/importlib/__init__.py", line 109, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
File "<frozen importlib._bootstrap>", line 1129, in _exec
File "<frozen importlib._bootstrap>", line 1467, in exec_module
File "<frozen importlib._bootstrap>", line 1572, in get_code
File "<frozen importlib._bootstrap>", line 1532, in source_to_code
File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
File "/home/vivekpradhan/finalbasket/basket/blog/blogger/models.py", line 9
class Meta:
^
SyntaxError: invalid syntax
(basket)[email protected]:~/finalbasket/basket/blog$ python manage.py makemigrations
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/site-packages/django/core/management/__init__.py", line 351, in execute_from_command_line
utility.execute()
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/site-packages/django/core/management/__init__.py", line 325, in execute
django.setup()
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/site-packages/django/__init__.py", line 18, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/site-packages/django/apps/registry.py", line 108, in populate
app_config.import_models(all_models)
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/site-packages/django/apps/config.py", line 198, in import_models
self.models_module = import_module(models_module_name)
File "/home/vivekpradhan/finalbasket/basket/lib/python3.4/importlib/__init__.py", line 109, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
File "<frozen importlib._bootstrap>", line 1129, in _exec
File "<frozen importlib._bootstrap>", line 1467, in exec_module
File "<frozen importlib._bootstrap>", line 1572, in get_code
File "<frozen importlib._bootstrap>", line 1532, in source_to_code
File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
File "/home/vivekpradhan/finalbasket/basket/blog/blogger/models.py", line 9
class Meta:
^
SyntaxError: invalid syntax