Question

我正在尝试在我的模型中保存一个表单，但是该表单无法正常工作。当我第一次填写字段并按“提交”按钮时，页面正在重新加载。当我第二次尝试时，出现此错误：

django.db.utils.OperationalError: table user_profile_product has no column named product_user_id

我的代码：

Views.py

def post_product(request):
    form = ProductForm()
    template_name = 'user_profile/add_product.html'
    if request.method == 'POST':
        form= ProductForm(request.POST)
        if form.is_valid():
            name = form.cleaned_data['product_name']
            description = form.cleaned_data['product_description']
            price = form.cleaned_data['product_price']
            user = request.user
            product = Product(product_name=name, product_description=description, product_price=price, product_user=user)
            product.save()
            return render(request, 'home_page/home.html', {'product': product})
        else:
            form = ProductForm()
    return render(request, template_name, {'form':form})

Models.py

class Product(models.Model):
    product_name = models.CharField(max_length=150 )
    product_description = models.CharField(max_length=300)
    product_price = models.DecimalField(max_digits=6, decimal_places=2)
    product_user = models.ForeignKey(User, on_delete=models.CASCADE)

Forms.py

class ProductForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
         self.user = kwargs.pop('user', None)
         super(ProductForm, self).__init__(*args, **kwargs)

    product_name = forms.CharField(max_length=150, required=True)
    product_description = forms.CharField(max_length=300, required=True)
    product_price = forms.DecimalField(max_digits=6, decimal_places=2)

    class Meta:
        model = Product
        fields = ('product_name', 'product_description', 'product_price')

迁移文件

from django.conf import settings
from django.db import migrations, models
import django.db.models.deletion


class Migration(migrations.Migration):

    initial = True

    dependencies = [
        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
    ]

    operations = [
        migrations.CreateModel(
            name='Product',
            fields=[
                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('product_name', models.CharField(max_length=150)),
                ('product_description', models.CharField(max_length=300)),
                ('product_price', models.DecimalField(decimal_places=2, max_digits=6)),
                ('product_user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
            ],
        ),
    ]

更新：

当我删除外键product_user时，可以将表单保存在模型中，但是当我尝试使用外键保存该表单并指定request.user时，该表单将无法正常工作。我在模型中做错了吗？

无法在Django模型中保存表单

0 个答案: