网站上没有显示错误消息，也没有任何查看错误的元素
view.py：
from . import forms
from django.shortcuts import render,redirect
from django.contrib.auth import authenticate,login,logout
from django.core import validators
def user_login(request):
form=forms.LoginForm()
if request.POST:
form=forms.LoginForm(request)
# if request.user.is_authenticated:
# return redirect('home')
return render(request,"login.html",context={'form':form,'message':''})
def home(request):
if request.user.is_authenticated:
return render(request,"home.html")
return redirect(user_login)
def user_logout(request):
if request.user.is_authenticated and request.META.get('HTTP_REFERER') is not None:
logout(request)
return redirect(home)
forms.py：
from django import forms
from django.core import validators
class LoginForm(forms.Form):
name= forms.CharField(validators=[validators.MinLengthValidator(4,"errorororokjjkkj hjkhjkjhk hkhkh j")],widget=forms.TextInput(attrs = {'class':"form-control mb-3",'placeholder':"Username"}))
password=forms.CharField(widget=forms.PasswordInput(attrs = {'class':"form-control mb-3",'placeholder':"password"}))
登录.html：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>login</title>
{% load bootstrap5 %}
{% bootstrap_css %}
{% bootstrap_javascript %}
</head>
<body>
<div class=" w-50 container " style="border-radius: 20px; background-color: darkgrey;">
<h1 class="mt-5 pt-5 mb-0 text-center ">login</h1>
<div class="h-100 d-flex align-items-center justify-content-center ">
<form class="w-50 m-5 container" method="post" >
{%csrf_token%}
{{form}}
{{message}}
<button type="submit" class="btn btn-primary mt-1" onclick="">login</button>
</form>
<!-- <form class="w-50 m-5 container" method="post" enctype="multipart/form-data" >
{%csrf_token%}
<label for="exampleFormControlSelect1">Username</label>
<input type="text" class="form-control mb-3" placeholder="Username" name="username" required>
<p>{{message}}</p>
<label for="password">password</label>
<input class="form-control mb-3" type="password" name="password" placeholder="password" required></input>
<button type="submit" class="btn btn-primary mt-1" onclick="">login</button>
</form> -->
</div>
</div>
</div>
</body>
</html>
我想在不使用 request.POST 值的情况下显示错误。请帮助我验证它。我还尝试使用验证错误方法自定义验证器。当我使用 request.POST 方法时，它会显示我传递消息的错误
您需要在视图中检查验证
def user_login(request):
if request.method == 'POST':
form = forms.LoginForm(request.POST)
if form.is_valid():
# Handle valid form submission
return redirect('home')
else:
form = forms.LoginForm()
return render(request, "login.html", context={'form': form})
还在 HTML 中添加错误消息
<form class="w-50 m-5 container" method="post">
{% csrf_token %}
{{ form.name.label_tag }} {{ form.name }}
<div class="error-message">{{ form.name.errors }}</div>
{{ form.password.label_tag }} {{ form.password }}
<div class="error-message">{{ form.password.errors }}</div>
<button type="submit" class="btn btn-primary mt-1">Login</button>
</form>