Question

由于django用户模型中只有很少的字段，我制作了一个自定义模型并使用它的ModelForm将数据保存到用户模型和自定义模型。 models.py如下所示

from django.db import models
from django.contrib.auth.models import User
# Create your models here.
import datetime
class Post(models.Model):
    Author=models.ForeignKey(User)
    title=models.CharField(max_length=66)
    content=models.TextField()
    created_date=models.DateField(default=datetime.datetime.now())
    published_date=models.DateField()
    def publish(self):
        self.published_date=datetime.datetime.now()
        self.save()



class UserDetails(models.Model): #the custom model
    uname=models.CharField(max_length=55)
    first_name=models.CharField(max_length=55)
    last_name=models.CharField(max_length=55)
    age=models.IntegerField()
    contact=models.CharField(max_length=13)
    email=models.EmailField()
    pword=models.CharField(max_length=55)

modelform：

class RegisterForm(ModelForm):
    class Meta:
        model=UserDetails
        fields=['uname','pword','first_name','last_name','email','contact']

views.py就像这样

from django.shortcuts import render
from .models import UserDetails
# Create your views here.
from django.contrib.auth import authenticate,login,logout
from .forms import RegisterForm,LoginForm,PostForm
from django.contrib.auth.models import User
from django.db import IntegrityError
def register(request):
    if request.method=='POST':
        form=RegisterForm(request.POST)
        try:
            if form.is_valid():
                form.save()
                uname=form.cleaned_data['uname']
                fname=form.cleaned_data['first_name']
                pword=form.cleaned_data['pword']
                email=form.cleaned_data['email']
                contact=form.cleaned_data['contact']
                lname=form.cleaned_data['last_name']
                user=User.objects.create_user(uname,password=pword,email=email)
                user.last_name=lname
                user.save()
                #form.save()
                #stuff after registration
                message="registration done! login again"
                return render(request,'register.html',locals())
        except IntegrityError:
            message="username already exists!! try another"
    else:
        form=RegisterForm()
    return render(request,'register.html',locals())

问题在于，即使我重新注册RegisterForm，“＆＃39;消息＆＃39;我知道的是，用户名已经存在!!尝试另一个。 auth.User模型正在更新，但UserDetails不是。我究竟做错了什么？（如果这是一个愚蠢的问题，请饶恕我:)）

更新：1

from django.shortcuts import render
from .models import UserDetails
# Create your views here.
from django.contrib.auth import authenticate,login,logout
from .forms import RegisterForm,LoginForm,PostForm
from django.contrib.auth.models import User
from django.db import IntegrityError
def register(request):
    if request.method=='POST':
        form=RegisterForm(request.POST)
        try:
            if form.is_valid():
                form.save()
                uname=form.cleaned_data['uname']
                fname=form.cleaned_data['first_name']
                pword=form.cleaned_data['pword']
                email=form.cleaned_data['email']
                contact=form.cleaned_data['contact']
                lname=form.cleaned_data['last_name']
                if not User.objects.filter(username=uname,email=email).exists():
                    user=User.objects.create_user(uname,password=pword,email=email)
                    user.last_name=lname
                    user.save()
                message="registration done! login again"
                return render(request,'register.html',locals())
        except IntegrityError:
            message="username already exists!! try another"
    else:
        form=RegisterForm()
    return render(request,'register.html',locals())

Answer 1

if form.is_valid():
    # save a UserDetails obj (data are automatically get from the form) to db.
    form.save()

    # Get data from form
    uname = form.cleaned_data['uname']
    fname = form.cleaned_data['first_name']
    pword = form.cleaned_data['pword']
    email = form.cleaned_data['email']
    contact = form.cleaned_data['contact']
    lname = form.cleaned_data['last_name']

    # Check if user already exists. If it doesn't, create it
    if not User.objects.filter(username=uname, email=email).exists():
        user=User.objects.create_user(uname, password=pword, email=email)

    #stuff after registration
    message = "registration done! login again"
    return render(request,'register.html',locals())

详情请见ModelForm's save() method。

但是，我注意到age模型字段为required。所以，save()会抱怨。您最好将其设为：age = models.IntegerField(blank=True, null=True)或定义默认值，例如age = models.IntegerField(default=20)。虽然定义默认年龄很尴尬，但最好按照blank=True null=True进行操作，以便空age。

Answer 2

模型表单字段中缺少年龄

表单数据未保存在django中

2 个答案: