Django自定义customUser模型仅存邮箱密码，姓名字段为空问题

Hey there, let's get to the bottom of why your firstname and lastname fields are staying empty when users register! The root cause is in your UserManager's create_user method—you're not assigning the passed-in first/last names to the user object before saving it to the database. Let's walk through the fixes:

1. Update the create_user Method in UserManager #

Right now, when you create the user_obj instance, you only set the email. You need to add the firstname and lastname parameters to the model initialization. Here's the corrected code:

class UserManager(BaseUserManager):
    def create_user(self, email, firstname, lastname, password=None, is_active=True, is_staff=False, is_admin=False):
        if not email:
            raise ValueError("user must have an email")
        user_obj = self.model(
            email = self.normalize_email(email),
            firstname=firstname,  # Add this line to save first name
            lastname=lastname     # Add this line to save last name
        )
        user_obj.set_password(password)
        user_obj.active = is_active
        user_obj.staff = is_staff
        user_obj.admin = is_admin
        user_obj.save(using=self._db)
        return user_obj
    
    # Keep the create_staffuser and create_superuser methods the same

2. Update REQUIRED_FIELDS in customUser #

Since firstname and lastname are required for all users, you should add them to the REQUIRED_FIELDS list. This ensures Django's built-in tools (like the createsuperuser command) prompt for these fields when needed:

class customUser(AbstractBaseUser):
    email = models.EmailField(max_length=225, unique=True)
    firstname = models.CharField(max_length=225)
    lastname = models.CharField(max_length=225)
    active = models.BooleanField(default=True)
    staff = models.BooleanField(default=False)
    admin = models.BooleanField(default=False)
    
    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['firstname', 'lastname']  # Update this line
    
    objects = UserManager()
    
    # Keep all other methods the same

3. Simplify the Signup View (Optional but Recommended) #

Your create_user method already calls save() internally, so you don't need to call user.save() again in your view. This removes redundant database operations:

def signup(request):
    if request.method == "POST":
        firstname1 = request.POST['firstname']
        lastname1 = request.POST['lastname']
        email1 = request.POST['email']
        password1 = request.POST['password1']
        password2 = request.POST['password2']
        
        if password1 == password2:
            if customUser.objects.filter(email=email1).exists():
                messages.info(request,'email already taken')
                return redirect('signup')
            else:
                # Remove the user.save() line below—create_user handles saving
                user = customUser.objects.create_user(email=email1, firstname=firstname1, lastname=lastname1, password=password1)
                return redirect('/')
        else:
            messages.info(request, 'Password Doesnt Match')
            return redirect('signup')
    else:
        return render(request, 'signup.html')

Why This Works: #

• The first fix directly addresses the missing field assignment—now when you call create_user, the first and last names are attached to the user object before it's saved to MySQL.
• Updating REQUIRED_FIELDS aligns your custom model with Django's expectations, preventing issues with admin commands or future extensions.
• Removing the extra save() call cleans up your code and avoids unnecessary database writes.

内容的提问来源于stack exchange，提问作者safwan