我如何检查Django中是否存在用户名和邮件 [英] How can i checking username and mail exists in Django

问题描述

我刚刚开始学习Django.我做了一张注册表.它的工作很好.但是我无法在此注册表中检查用户名和邮件是否存在.如果我尝试使用相同的用户名注册，则会收到(1062，键'username'的重复条目'asdasd'"))错误.(输入我的用户名.)

I just started learn Django. I made a registration form. its working good. But I couldn't check exists usernames and mails in this registration form. if i try registers with the same username, I get the (1062, "Duplicate entry 'asdasd' for key 'username'") error. (asdasd my username..)

我该如何解决?

forms.py

from django import forms
class RegisterForm(forms.Form):
    username = forms.CharField(required=True, max_length=20, label= "Kullanıcı Adı")
    email = forms.EmailField(required=True, label="E-Mail")
    password = forms.CharField(max_length=20, label= "Password", widget=forms.PasswordInput)
    confirm = forms.CharField(max_length=20, label="RePassword",widget=forms.PasswordInput)
def clean(self):
    username = self.cleaned_data.get("username")
    email = self.cleaned_data.get("email")
    password = self.cleaned_data.get("password")
    confirm = self.cleaned_data.get("confirm")


    if password and confirm and password != confirm:
        raise forms.ValidationError("Passwords dont match")

    values = {
        "username" : username,
        "email" : email,
        "password" : password,
    }
    return values

views.py

from django.shortcuts import render, redirect
from .forms import RegisterForm
from django.contrib import messages
from django.contrib.auth.models import User
from django.contrib.auth import login


def register(request):

    form = RegisterForm(request.POST or None)

    if form.is_valid():
        username = form.cleaned_data.get("username")
        email = form.cleaned_data.get("email")
        password = form.cleaned_data.get("password")
        newUser = User(username=username)
        newUser.email = email
        newUser.set_password(password)
        newUser.save()
        login(request, newUser)
        messages.success(request,"Successful on Register")
        return redirect("index")
    context = {
        "form": form
    }
    return render(request, "register.html", context)


def loginUser(request):
    return render(request, "login.html")

def logoutUser(request):
    return render(request, "logout.html")

非常感谢您！

推荐答案

最直接的方法是将方法添加到表单类中

Most straightforward way is to add to methods to your form class

def clean_email(self):
    if User.objects.filter(username=username).exists():
        raise forms.ValidationError("Username is not unique")

def clean_username(self):
    if User.objects.filter(email=email).exists():
        raise forms.ValidationError("Email is not unique")

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