如何在django中的同一页面上获取特定查询的结果？ 例如，如果我的“index.html”有一个包含两个字段的表单，一个用于用户名和密码。 在views.py中，我检查值是否与db中的字段匹配。 我想返回一个字符串“Login successfull”或“Login Failed”同一页面。 请为views.py和index.html建议必要的代码。 目前我检查值并呈现一个新页面。请建议如何在同一页面上返回它。 提前谢谢！
def index(request):
return render(request, "index.html")
def stage2(request):
if Verify.objects.filter(usr=request.POST['us'],password=request.POST['pass'])
request.session['usr']=request.POST['us']
a=request.session['usr']
dict1={'u':a}
return render(request,"success.html",dict1)
else:
return render(request,"failed.html")
我想在同一页面上显示结果，即“index.html”
答案 0 :(得分：9)
使用return redirect(request.META['HTTP_REFERER'])重定向到上一个网址。
答案 1 :(得分：1)
我认为您正在寻找用户登录功能，您可以使用django用户登录here并使用django Message框架来显示messages
from django.contrib.auth import authenticate, login
from django.shortcuts import redirect
def my_view(request):
username = request.POST['username']
password = request.POST['password']
user = authenticate(username=username, password=password)
if user is not None:
if user.is_active:
login(request, user)
# Return a 'disabled account' error message
return redirect('/')
else:
# Return a 'disabled account' error message
return redirect('/')
else:
# Return an 'invalid login' error message.
return redirect('/')
答案 2 :(得分：1)
您可以使用Django消息。 造访https://docs.djangoproject.com/en/2.1/ref/contrib/messages/ 我以登录功能为例。
在views.py
class LoginView(View):
def post(self, request,*args, **kwargs):
username = request.POST['username']
password = request.POST['password']
user = authenticate(username=username, password=password)
if user is not None:
if user.is_active:
login(request, user)
messages.success(request, 'woahh!! logged in..')
return redirect('home')
else:
return HttpResponse('please! verify your Email first')
else:
messages.error(request, 'username or password not correct')
return redirect('login')
在templates / login.html
中 <form method="post"v action="{% url 'login' %}">
{% csrf_token %}
<input type="text" name="username" placeholder="Username">
<input type="password" name="password" placeholder="Password">
{% for error in messages %}
<p>{{ error }}</p><br>
{% endfor %}
<button type="submit" >Login</button>
</form>
希望这可以为您提供帮助。
答案 3 :(得分：0)
这是您可以使用的简单方法：
def index(request):
return render(request, "index.html")
def stage2(request):
if Verify.objects.filter(usr=request.POST['us'],password=request.POST['pass'])
request.session['usr']=request.POST['us']
a=request.session['usr']
dict1={'u':a}
return render(request,"success.html",dict1)
else:
error = "Username or Password is Incorrect"
return render(request,"index.html",{'error':error})
#Instead of rendering failed.html you can load index.html and pass error message to html page
在 index.html 中，您可以在jinja模板中查看错误消息
<html>
<body>
{% if error %}
{{ error }}
{% endif %}
<input type="email">
<input type="password">
</body>
</html>
答案 4 :(得分：0)
项目的urls.py
urlpatterns = [
path('', include('accounts.urls')),
path('admin/', admin.site.urls)
]
帐户模块的urls.py
urlpatterns = [
path('', views.userlogin, name='home'),
path('accounts/login', views.userlogin, name='login'),
path('accounts/add', views.add, name='add')
]
views.py
from django.shortcuts import render, redirect
from django.contrib import messages
from django.contrib.auth.models import User, auth
def userlogin(request):
if request.method == "POST":
username = request.POST['username']
password = request.POST['password']
user = auth.authenticate(username=username, password=password)
if user is not None:
auth.login(request, user)
return render(request, 'home.html', {'name': username})
else:
messages.info(request, 'Invalid Credentials')
# Going back to previous URL
return redirect(request.META['HTTP_REFERER'])
else:
return render(request, 'login.html')
def add(request):
n1 = int(request.POST["num1"])
n2 = int(request.POST["num2"])
res = n1 + n2
return render(request, 'result.html', {'result': res})
master.html
<!doctype html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
</head>
<body bgcolor="#ff1493">
{% block content %}
{% endblock %}
</body>
</html>
home.html
{% extends 'master.html' %}
{% block content %}
<b> Hello {{name}} </b>
<form action="add" method="post">
{% csrf_token %}
<table>
<tr>
<td>
Enter First Number :</td>
<td>
<input type="number" name="num1">
</td>
</tr>
<tr>
<td>
Enter Second Number :
</td>
<td>
<input type="number" name="num2">
</td>
</tr>
<tr>
<td></td>
<td> <input type="submit"> </td>
</tr>
</table>
</form>
{% endblock %}
login.html
{% load static %}
<html>
<head>
<title> Analytics-login </title>
<link rel="stylesheet" type="text/css" href="{% static 'styles/style.css' %}">
<script src="{% static 'js/jquery.min.js' %}" charset="utf-8"></script>
<script type="text/javascript" src="{% static 'js/login.js' %}" charset="utf-8"></script>
</head>
<body>
<div class="login-box">
<img src="{% static 'images/avatar.png' %}" class="avatar">
<h1>Login</h1>
<div>
{% if messages %}
<ul class="messages">
{% for message in messages %}
<li{% if message.tags %} class="{{ message.tags }}"{% endif %}>
{% if message.level == DEFAULT_MESSAGE_LEVELS.ERROR %}Important: {% endif %}
{{ message }}
</li>
{% endfor %}
</ul>
{% endif %}
</div>
<form action="accounts/login" method="post">
{% csrf_token %}
<div class="txtb">
<input type="text" name="username">
<span data-placeholder="Username" ></span>
</div>
<div class="txtb">
<input type="password" name="password">
<span data-placeholder="Password"></span>
</div>
<div >
<input type="submit" name="submit" value="Login">
</div>
<div class="bottom-text">
<a href="#" >Forget Password</a>
<a>|</a>
<a href="accounts/register" >Register</a>
</div>
</form>
</div>
</body>
</html>