我是 Django 的新手，我正在尝试通过一些项目的实践来学习，但我遇到了这个问题，
NOT NULL constraint failed: shop_product.user_id
模型.py
from django.db import models
from django.conf import settings
from django.core.urlresolvers import reverse
class Category(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL,
related_name='category_created')
name = models.CharField(max_length=200, db_index=True)
slug = models.SlugField(max_length=200, db_index=True, unique=True)
class Meta:
ordering = ('name',)
verbose_name = 'category'
verbose_name_plural = 'categories'
def __str__(self):
return self.name
class Product(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL,
related_name='product_created')
category = models.ForeignKey(Category, related_name='products')
name = models.CharField(max_length=200, db_index=True)
slug = models.SlugField(max_length=200, db_index=True)
image = models.ImageField(upload_to='products/%Y/%m/%d', blank=True)
description = models.TextField(blank=True)
price = models.DecimalField(max_digits=10, decimal_places=2)
stock = models.PositiveIntegerField()
available = models.BooleanField(default=True)
negiotiable = models.BooleanField(default=True)
created = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
users_like = models.ManyToManyField(settings.AUTH_USER_MODEL,
related_name='product_liked',
blank=True)
class Meta:
ordering = ('name',)
index_together = (('id', 'slug'),)
def __str__(self):
return self.name
def get_absolute_url(self):
return reverse('products_detail',
args=[self.slug])
这是我的 views.py 但我不确定我的观点是否有问题，我认为问题一定出在我的模型上....
views.py
from django.views.generic import *
from django.core.urlresolvers import reverse_lazy
from .models import Category, Product
class CategoryList(ListView):
model = Category
class CategoryDetail(DetailView):
model = Category
class ProductList(ListView):
model = Product
class ProductDetail(DetailView):
model = Product
class ProductCreate(CreateView):
model = Product
fields = ("category", 'name', 'image', 'description', 'price', 'stock','available', 'negiotiable')
class ProductUpdate(UpdateView):
model = Product
fields = ('name', 'image', 'description', 'price', 'stock','available', 'negiotiable')
class ProductDelete(DeleteView):
model = Product
success_url = reverse_lazy('product_list')
请告诉我可以做什么。
请您参考如下方法:
将用户添加到列表中:
class ProductCreate(CreateView):
model = Product
fields = ["category", 'name', 'image', 'description', 'price','stock','available', 'negiotiable', 'user']
或确保 Field 必须为 null=true 和 blank=True。
class Product(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL,
related_name='product_created', null=True, blank=True)
