django 多个用户在注册时遇到多个组问题

如何解决django 多个用户在注册时遇到多个组问题

这是我的问题，我用 django 管理面板创建了 3 个组（'admin'、'prof'、'etudiant'，但我目前不使用组管理员）。我创建了两个模型类，它们从带有 oneToOneField 的 User 模型（“Professeur”和“Etudiant”）继承而来。我还为所有两个模型类创建了一个注册表单。 使用 django post_save 我可以用组注册我的不同用户。但是现在，如果我尝试使用自己的注册表单注册一个新用户“Professeur”，它会自动添加到“prof”和“etudiant”这两个组中。 怎么做才能让一个用户只属于一个组

etudiant/models.py

​​>

from django.db import models
from django.contrib.auth.models import User
from django.core.validators import RegexValidator


class Etudiant(models.Model):
    user = models.OneToOneField(User,on_delete=models.CASCADE,primary_key=True)
    et_matricule_regex = RegexValidator(regex=r'^(ET)-[A-Z]{2}-(PM)-[\d]{4}$',message="ex: ET-AD-PM-2020 -> Etudiant - Ali Diop - Pierre Michel- 2020")
    et_numero_matricule = models.CharField(validators=[et_matricule_regex],max_length=40,unique=True,verbose_name="numéro matricule")
    et_lieu_de_residence = models.CharField(max_length=150,blank=True,verbose_name="lieu de résidence")
    et_date_de_naissance = models.DateField(null=True,verbose_name="date de naissance")
    et_telephone_regex = RegexValidator(regex=r'^\+?[\d]{3}-[\d]{2}-[\d]{2}-[\d]{2}-[\d]{2}$',message="+000-00-00-00-00")
    et_telephone = models.CharField(validators=[et_telephone_regex],verbose_name="telephone")

professeur/models.py

​​>

from django.db import models
from django.contrib.auth.models import User
from django.core.validators import RegexValidator


class Professeur(models.Model):
    user = models.OneToOneField(User,primary_key=True)
    prof_matricule_regex = RegexValidator(regex=r'^(PR)-[A-Z]{2}-(PM)-[\d]{4}$',message="ex: PR-ZT-PM-2017 -> Professeur - Zan Togola - Pierre Michel- 2017")
    prof_numero_matricule = models.CharField(validators=[prof_matricule_regex],verbose_name="numéro matricule")
    prof_lieu_de_residence = models.CharField(max_length=150,verbose_name="lieu de résidence")
    prof_date_de_naissance = models.DateField(null=True,verbose_name="date de naissance")
    prof_telephone_regex = RegexValidator(regex=r'^\+?[\d]{3}-[\d]{2}-[\d]{2}-[\d]{2}-[\d]{2}$',message="+000-00-00-00-00")
    prof_telephone = models.CharField(validators=[prof_telephone_regex],max_length=30,verbose_name="telephone")

etudiant/signals.py

​​>

from django.db.models.signals import post_save
from django.contrib.auth.models import User,Group
from django.dispatch import receiver
from .models import Etudiant


@receiver(post_save,sender=User)
def etudiant_profil(sender,instance,created,**kwargs):
    if created:
        group = Group.objects.get(name='etudiant')
        instance.groups.add(group)

        Etudiant.objects.create(
            user=instance,)

professeur/signals.py

​​>

from django.db.models.signals import post_save
from django.contrib.auth.models import User,Group
from django.dispatch import receiver
from .models import Professeur


@receiver(post_save,sender=User)
def professeur_profil(sender,**kwargs):
    if created:
        group = Group.objects.get(name='prof')
        instance.groups.add(group)

        Professeur.objects.create(
            user=instance,)

etudiant/apps.py

​​>

from django.apps import AppConfig


class EtudiantConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'etudiant'

    def ready(self):
        import etudiant.signals # noqa

professeur/apps.py

​​>

from django.apps import AppConfig


class ProfesseurConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'professeur'

    def ready(self):
        import professeur.signals # noqa

etudiant/views.py

​​>

from django.shortcuts import render,redirect
from compte.forms import CreateUserForm
from .forms import EtudiantForm
from compte.decorators import unauthenticated_user
from django.contrib import messages


@unauthenticated_user
def etudiantRegisterPage(request):
    if request.method == 'POST':
        form = CreateUserForm(request.POST)
        etudiant_form = EtudiantForm(request.POST)
        if form.is_valid() and etudiant_form.is_valid():
            user = form.save()
            etudiant = etudiant_form.save(commit=False)
            etudiant.user = user

            etudiant.save()

            messages.success(request,'Compte etudiant créer avec succès !')
            return redirect('login')

    else:
        form = CreateUserForm()
        etudiant_form = EtudiantForm()
    context = {
        'form': form,'etudiant_form': etudiant_form
    }
    return render(request,'registerEtudiant.html',context)

professeur/views.py

​​>

from django.shortcuts import render,redirect
from .forms import ProfesseurForm
from compte.forms import CreateUserForm
from compte.decorators import unauthenticated_user
from django.contrib import messages


@unauthenticated_user
def professeurRegisterPage(request):
    if request.method == 'POST':
        form = CreateUserForm(request.POST)
        professeur_form = ProfesseurForm(request.POST)
        if form.is_valid() and professeur_form.is_valid():
            user = form.save()
            professeur = professeur_form.save(commit=False)
            professeur.user = user

            professeur.save()

            messages.success(request,'Compte professeur creer avec succès !')
            return redirect('login')

    else:
        form = CreateUserForm()
        professeur_form = ProfesseurForm()
    context = {
        'form': form,'professeur_form': professeur_form
    }
    return render(request,'registerProfesseur.html',context)

组

Group screen

我的表格

#User creation form
class CreateUserForm(UserCreationForm):
    password1 = forms.CharField(required=True,label="Mot de passe",widget=forms.PasswordInput(
            attrs={'style': 'width: 100%;'}),)
    password2 = forms.CharField(required=True,label="Confirmation du mot de passe",)

    class Meta:
        model = User
        fields = ['first_name','last_name','username','email']
        widgets = {
            'first_name': forms.TextInput(attrs={
                'style': 'width: 100%;'
            }),'last_name': forms.TextInput(attrs={
                'style': 'width: 100%;'
            }),'username': forms.TextInput(attrs={
                'style': 'width: 100%;'
            }),'email': forms.EmailInput(attrs={
                'style': 'width: 100%;'
            }),}


#Professeur creation form
class ProfesseurForm(ModelForm):
    class Meta:
        model = Professeur
        fields = '__all__'
        exclude = ['user']
        widgets = {
            'prof_numero_matricule': forms.TextInput(attrs={
                'style': 'width: 100%;'
            }),'prof_lieu_de_residence': forms.TextInput(attrs={
                'style': 'width: 100%;'
            }),'prof_date_de_naissance': forms.DateInput(attrs={
                'style': 'width: 100%;'
            }),'prof_telephone': forms.TextInput(attrs={
                'style': 'width: 100%;'
            }),}


#Etudiant creation form
class EtudiantForm(forms.ModelForm):
    class Meta:
        model = Etudiant
        fields = '__all__'
        exclude = ['user']
        widgets = {
            'et_numero_matricule': forms.TextInput(attrs={
                'style': 'width: 100%;'
            }),'et_lieu_de_residence': forms.TextInput(attrs={
                'style': 'width: 100%;'
            }),'et_date_de_naissance': forms.DateInput(attrs={
                'style': 'width: 100%;'
            }),'et_telephone': forms.TextInput(attrs={
                'style': 'width: 100%;'
            }),}

解决方法

这个问题是因为信号发送者是 User 模型本身引起的。因此，保存其中一个配置文件的用户实例将同时调用 professeur_profil 和 etudiant_profil 接收器。解决此问题的一种方法是将接收者的发送者改为配置文件模型：

@receiver(post_save,sender=Professeur)
def professeur_profil(sender,instance,created,**kwargs):
    if created:
        group = Group.objects.get(name='prof')
        instance.user.groups.add(group)


@receiver(post_save,sender=Etudiant)
def etudiant_profil(sender,**kwargs):
    if created:
        group = Group.objects.get(name='etudiant')
        instance.user.groups.add(group)