无法将值（用户id）分配给ForeignKey字段

Question

我收到以下错误：无法分配“

我正在尝试将当前用户的id分配给我刚刚创建的对象。

这是我模型的一部分。py:

from django.contrib.auth.models import User  
from django.forms import ModelForm  
from django.db import models  

    class UserForm (ModelForm) :  
        class Meta:  
            model = User        
    class Worry(models.Model) :    
        user = models.ForeignKey(User) #Many worries to 1 user relation

这是我views.py的一部分：

from django.db import models  
from django.shortcuts import render_to_response, redirect, get_object_or_404  
from django.template import RequestContext  
from django.contrib.auth.models import User  
from holaProy.models import UserForm, Worry, WorryForm, Statistics, StatisticsForm  
def worry_add (request):  
    form = WorryForm (request.POST or None)  
    if form.is_valid():      
        wform.user = models.ForeignKey('User')  #HERE IS THE PROBLEM I THINK
        wform.save()  
        return redirect (index)  
    return render_to_response ('holaProy/worry_add.html', {'worry_form': form}, context_instance = RequestContext(request))</code>

如何才能成功地将当前用户id分配给实际实例的“用户”字段？




Answer 1

尝试：

def worry_add(request):
    form = WorryForm(request.POST or None)
    if request.method == 'POST' and form.is_valid():
        worry = form.save(commit=False)
        worry.user = #assign this to an instance of a User object
        worry.save()

Answer 2

这就是你有问题的地方。

基本上，你正在搜索一个字符串。您需要先获取实际的数据库对象。试试这个：

User = User.objects.get(pk='User')
wform.user = models.ForeignKey('User')  #Now User refers to the database object, not a string

Answer 3

事实上，问题就在于这一点：

wform.user = models.ForeignKey('User')

wform。用户应设置为用户实例。大概是这样的：

user = request.user    # Retrieve proper user according to your needs
wform.user = user