如何在Django中使用auth_user模型和cutom模型字段创建自定义注册表单

Question

我是django的新手，我有带有附加状态和标题模型的自定义用户模型。 到目前为止，我已经完成了数据库部分，如何为带有外键字段的本地用户模型创建注册表单。 我的模特课程代码：

from django.db import models
from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.contrib.auth.models import AbstractUser

class Title(models.Model):
value = models.CharField(max_length=100, null=True, blank=True)

class Meta:
    db_table = 'title'

class Status(models.Model): 
value = models.CharField(max_length=100, null=True, blank=True)

class Meta:
    db_table = 'status'

class User(AbstractUser):

filenumber = models.CharField(max_length=9, null=True, blank=True)
personalemail = forms.EmailField(required=True)
intakeyear = models.IntegerField(null=True, blank=True)
title = models.ForeignKey(Title, on_delete=models.CASCADE, null=True, blank=True)
status = models.ForeignKey(Status, on_delete=models.CASCADE, null=True, blank=True)

我的settings.py：

AUTH_USER_MODEL = 'student.User'# changes built-in user model to ours

我如何创建用户注册表单字段，例如名字，姓氏，标题，状态，电子邮件，个人电子邮件，密码，密码确认。 我在用户模型标题和状态（外键字段）中添加了额外的字段，并添加了文件号，接收年，个人电子邮件

我的form.py文件：

from django import forms
from django.contrib.auth.models import User
from django.contrib.auth.forms import UserCreationForm, UserChangeForm
from django.forms import ModelForm

from student.models import User
from student.models import Title, Statu

class StudentNewRegistrationForm(forms.ModelForm):
title = forms.CharField(required=True)
intakeyear = forms.IntegerField(required=True)
email = forms.EmailField(required=True)
personalemail = forms.EmailField(required=True)
status = forms.CharField(required=True)


def __init__(self, *args, **kwargs):
    super(StudentNewRegistrationForm, self).__init__(*args, **kwargs)
    title = [('', 'Choose a title')]
    title.extend(Title.objects.values_list('id', 'value'))
    self.fields['title'] = forms.ChoiceField(choices=title)

    status = [('', 'Choose a status')]
    status.extend(Status.objects.values_list('id', 'value'))
    self.fields['status'] = forms.ChoiceField(choices=status)

class Meta:
    model = User
    fields = ['username','first_name','last_name','email','password1',
            'password2''title','status','intakeyear','personalemail'
    ]

def save(self, commit=True):
    user = super(StudentNewRegistrationForm, self).save(commit=False)
    user.first_name = self.cleaned_data['first_name']
    user.last_name = self.cleaned_data['last_name']
    user.email = self.cleaned_data['email']
    user.personalemail = self.cleaned_data['email']
    user.title = self.cleaned_data['title']
    user.intakeyear = self.cleaned_data['intakeyear']
    user.status = self.cleaned_data['status']
    user.password1 = self.cleaned_data['password1']
    user.password2 = self.cleaned_data['password2']

    if commit:
        user.save()
    return user

views.py：

from django.shortcuts import render, redirect
from django.urls import reverse
from django.contrib.auth.models import User
from django.contrib.auth import update_session_auth_hash
from django.contrib.auth.decorators import login_required
from .forms import StudentNewRegistrationForm

def student_new_registration(request):
  if request.method == 'POST':
    form = StudentNewRegistrationForm(request.POST)
    if form.is_valid():
        form.save()
        return redirect(reverse('student:home'))

else:
    form = StudentNewRegistrationForm()

    args = {'form': form}
    return render(request, 'student/studentnewregistrationform.html', args)

studentnewregistrationform.html：

{% extends 'base.html' %}

{% block head %}
<title>Student Registration&nbsp Form</title>
{% endblock %}

{% block body %}
<div class="container">
<form method="post">
    {% csrf_token %}
    <div class="row">
    <div class="col-sm-4">
         <h3> Student&nbsp;Registration&nbsp;Form</h3>
    </div>
    </div>
    <br>
    <div class="row">
        <div class="col-sm-2">{{ form.title.label }}</div>
        <div class="col-sm-3">{{ form.title }}</div>
        <div class="col-sm-4">{{ form.title.errors }}</div>
    </div>
     <br>
    <div class="row">
        <div class="col-sm-2">{{ form.firstname.label }}</div>
        <div class="col-sm-3">{{ form.firstname }}</div>
        <div class="col-sm-4">{{ form.firstname.errors }}</div>
    </div>
     <br>
    <div class="row">
        <div class="col-sm-2">{{ form.lastname.label }}</div>
        <div class="col-sm-3">{{ form.lastname }}</div>
        <div class="col-sm-4">{{ form.lastname.errors }}</div>
    </div>
    <br>
    <div class="row">
        <div class="col-sm-2">{{ form.email.label }}</div>
        <div class="col-sm-3">{{ form.email }}</div>
        <div class="col-sm-4">{{ form.email.errors }}</div>
    </div>
    <br>
    <div class="row">
        <div class="col-sm-2">{{ form.personalemail.label }}</div>
        <div class="col-sm-3">{{ form.personalemail }}</div>
        <div class="col-sm-4">{{ form.personalemail.errors }}</div>
    </div>
    <br>

    <br>
    <div class="row">
        <div class="col-sm-2">{{ form.intakeyear.label }}</div>
        <div class="col-sm-3">{{ form.intakeyear }}</div>
        <div class="col-sm-4">{{ form.intakeyear.errors }}</div>
    </div>
    <br>

    <div class="row">
        <div class="col-sm-2"><label for="{{ form.password1.label }}">Password</label></div>
        <div class="col-sm-3">{{ form.password1 }}</div>
        <div class="col-sm-4">{{ form.password1.errors }}</div>
    </div>
    <br>
   <div class="row">
        <div class="col-sm-2"><label for="{{ form.password2.id_for_label }}">ConfirmPassword</label></div>
        <div class="col-sm-3">{{ form.password2 }}</div>
        <div class="col-sm-4">{{ form.password2.errors }}</div>
    </div>

    <br><br>
    <div class="row">
        <div class="col-sm-2 col-sm-offset-2"> <input type="submit" name="submit" value="Submit" class="btn btn-primary"/></div>
        <div class="col-sm-2"></div>
    </div>
</form>
</div>
{% endblock %}

在这里，我为状态和标题模型（如下拉菜单）加载了数据夹具，现在我没有在哪里做错我正在出错

ValueError at /student/studentnewregistration/
Cannot assign "'100000002'": "User.title" must be a "Title" instance.

帮帮我任何人谢谢

Answer 1

由于title和status模型的字段为ForeignKyy ，因此应使用ModelChoiceField而不是ChoiceField如下所示：

def __init__(self, *args, **kwargs):
    super(StudentNewRegistrationForm, self).__init__(*args, **kwargs)
    self.fields['title'] = forms.ModelChoiceField(queryset=Title.objects.all(), empty_label='Choose a title')

    self.fields['status'] = forms.ModelChoiceField(queryset=Status.objects.all(), empty_label='Choose a status')

要显示值而不是id，只需将__str__()方法添加到Status和Title模型中：

class Title(models.Model):
    ...
    def __str__(self):
        return.self.value

class Status(models.Model): 
    ...
    def __str__(self):
        return.self.value