当我在新的 m2m 模型上运行 syncdb 时,出现错误:
错误:一个或多个模型未验证:services.service: 'categories' 通过模型 Service_Category 指定 m2m 关系,该模型尚未安装
当我同步它时它工作正常。所以我在下面的模型中没有得到正确的结果。不太确定为什么我的模型不起作用,以及它是否是一个简单的错字或其他原因。注意:模型使用简单的 m2m 关系运行良好,但它不喜欢这种方式。谢谢
from django.db import models
# Create your models here.
class Category(models.Model):
name = models.CharField(max_length=50)
slug = models.SlugField(max_length=50, unique=True,
help_text='Unique value for product page URL, created from name.')
description = models.TextField()
is_active = models.BooleanField(default=True)
meta_keywords = models.CharField("Meta Keywords", max_length=255, blank = True, null = True,
help_text='Content for description meta tag')
meta_description = models.CharField(max_length = 255, blank = True, null = True,
help_text = 'Content for description meta tag')
created_at = models.DateTimeField(auto_now_add = True)
updated_at = models.DateTimeField(auto_now = True)
class Meta:
#app_label = ''
db_table = 'categories'
ordering = ['created_at']
verbose_name_plural = 'Categories'
def __unicode__(self):
return self.name
@models.permalink
def get_absolute_url(self):
return ('catalog_category', (), {'category_slug': self.slug})
class Service(models.Model):
name = models.CharField(max_length=255, unique = True)
slug = models.SlugField(max_length=255, unique = True,
help_text = 'Unique value for product page URL, created from name.')
old_price = models.DecimalField(max_digits=9, decimal_places=2,
blank = True, null = True, default = 0.0)
image = models.CharField(max_length=50, blank = True)
is_active = models.BooleanField(default = True)
is_bestseller = models.BooleanField(default = False)
is_featured = models.BooleanField(default = False)
description = models.TextField()
bullet1 = models.CharField(max_length=255, blank = True, null = True,
help_text = 'Option Bullet for description')
bullet2 = models.CharField(max_length=255, blank = True, null = True,
help_text = 'Option Bullet for description')
bullet3 = models.CharField(max_length=255, blank = True, null = True,
help_text = 'Option Bullet for description')
bullet4 = models.CharField(max_length=255, blank = True, null = True,
help_text = 'Option Bullet for description')
bullet5 = models.CharField(max_length=255, blank = True, null = True,
help_text = 'Option Bullet for description')
micro_current = models.BooleanField(default = False)
meta_keywords = models.CharField(max_length = 255,blank = True, null = True,
help_text = 'Comma Delimited Set of SEO keywords for meta tag')
meta_description = models.CharField(max_length = 255, blank = True, null = True,
help_text = 'Content for description meta tag')
created_at = models.DateTimeField(auto_now_add = True)
updated_at = models.DateTimeField(auto_now = True)
categories = models.ManyToManyField(Category, through='Service_Category')
class Meta:
#app_label = ''
db_table = 'services'
ordering = ['created_at']
def __unicode__(self):
return self.name
class Service_Category:
category = models.ForeignKey(Category)
service = models.ForeignKey(Service)
micro_current = models.BooleanField(default = False)
class Meta:
#app_label = ''
db_table = 'service_categories'
services.service: 'categories' 通过模型Service_Category指定m2m关系,尚未安装