AttributeError：“元组”对象在 Django 中没有属性“_meta”错误答案

【问题标题】：AttributeError: 'tuple' object has no attribute '_meta' error in DjangoAttributeError：“元组”对象在 Django 中没有属性“_meta”错误
【发布时间】：2019-09-25 09:09:12
【问题描述】：

我正在尝试制作一个用于在 django 中注册的网页，但我无法解决此错误：

from accounts.forms.forms import AuthForm, SignUpForm

文件“C:\Users\tonik\OneDrive\Plocha\Python projects\chytry-lock-master\smartlock\accounts\forms\forms.py”，第 7 行，在类 SignUpForm（UserCreationForm）： new 中的文件“C:\Users\tonik\AppData\Local\Programs\Python\Python36\lib\site-packages\django\forms\models.py”，第 256 行 apply_limit_choices_to=假，文件“C:\Users\tonik\AppData\Local\Programs\Python\Python36\lib\site-packages\django\forms\models.py”，第 139 行，位于 fields_for_model opts = model._meta AttributeError: 'tuple' 对象没有属性 '_meta'

我的表单.py：

from django import forms
from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth.forms import AuthenticationForm
from django.forms.widgets import PasswordInput, TextInput


class SignUpForm(UserCreationForm):
    email = forms.EmailField(required=True, help_text='Required. Please enter a valid e-mail address.')
    email = forms.EmailField(required=True, widget=TextInput(attrs={'class': 'span2', 'placeholder': 'e-mail'}), help_text='Required. Please enter a valid e-mail address.')

    class Meta:
        model = UserCreationFormFields = ('username', 'email', 'password1', 'password2')
        fields = "__all__"

class AuthForm(AuthenticationForm):
    class Meta:
        model = AuthenticationForm


        def __init__(self, *args, **kwargs):
            super(AuthenticationForm, self).__init__(*args, **kwargs)

            for field in self.fields.values():
                field.error_messages = {'required': '{fieldname} is required'.format(fieldname=field.label)}

    username = forms.CharField(widget=TextInput(attrs={'placeholder': 'nickname'})),
    email = forms.CharField(widget=TextInput(attrs={'placeholder': 'e-mail'})),
    password = forms.CharField(widget=PasswordInput(attrs={'placeholder':'password'}))

我的观点：

from django.shortcuts import render, redirect
from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth import login, authenticate
from smartlock.forms import SignUpForm


def signup(request):
    if request.method == 'POST':
        form = UserCreationForm(request.POST)
        if form.is_valid():
            form.save()
            username = form.cleaned_data.get('username')
            first_password = form.cleaned_data.get('password1')
            user = authenticate(username=username, password=first_password)
            login(request, user)
            return redirect('home')
        else:
            form = UserCreationForm()
            return render(request, 'signup.html', {'form': form})
    else:
        form = UserCreationForm()
        form = SignUpForm()
    return render(request, 'signup.html', {'form': form})

花了几个小时试图解决这个问题，仍然不确定是什么问题。

【问题讨论】：

这条线应该做什么？ model = UserCreationFormFields = ('username', 'email', 'password1', 'password2')?
A model = ... 应该始终指定模型，而不是表单，也不是字段列表/元组/...。

标签： python django forms view

【解决方案1】：

将您的注册表单更改为此。 _meta 不能使用元组或列表，请参阅https://docs.djangoproject.com/en/4.0/ref/models/options/

class SignUpForm(UserCreationForm):
    email = forms.EmailField(required=True, help_text='Required. Please enter a 
            valid e-mail address.')
    email = forms.EmailField(required=True, widget=TextInput(attrs={'class': 
            'span2', 'placeholder': 'e-mail'}), help_text='Required. Please 
            enter a valid e-mail address.')

    class Meta:
          model = UserCreationFormFields
          fields = ('username', 'email', 'password1', 'password2')

【讨论】：