Question

我试图在用户登录django网站时向他们打招呼，但是使用django登录使发送消息到我的模板并重定向到幕后的新URL太困难了。如何在重定向到的网址模板上向用户（最好是该用户名）打招呼？

我尝试使用消息，但是重定向到新的URL总是会覆盖消息，并且永远不会出现。定期登录和注销都可以，我只是想弄清楚如何向用户显示欢迎文本，以使他们知道他们已经成功登录并正在使用自己的帐户。

views.py

def loginPage(request):
    return render(request, "registration/login.html")

def login(request):
    username = request.POST['username']
    password = request.POST['password']
    user = authenticate(request, username=username, password=password)
    if user is not None:
        #Success!
        messages.success(request, "Welcome " + user) #NOT WORKING :(
        login(request, user)
    else:
        return HttpReponseRedirect("/DataApp/accounts/login/")

settings.py

# Application definition

INSTALLED_APPS = [
    'DataApp.apps.DataappConfig',
    'session_security',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'session_security.middleware.SessionSecurityMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'WebscrapeApp.urls'

TEMPLATES = [
{
   'BACKEND': 'django.template.backends.django.DjangoTemplates',
   'DIRS': [os.path.join(BASE_DIR, '/DataApp/templates')],
   'APP_DIRS': True,
   'OPTIONS': {
     'context_processors': [
       "django.template.context_processors.debug",
       'django.template.context_processors.request',
       'django.contrib.auth.context_processors.auth',
       'django.contrib.messages.context_processors.messages',
     ],
   },
 },
]

WSGI_APPLICATION = 'WebscrapeApp.wsgi.application'


# Database
# https://docs.djangoproject.com/en/2.2/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}


# Password validation
# https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/2.2/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'America/New_York'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.2/howto/static-files/

STATIC_URL = '/static/'

LOGIN_URL = "/DataApp/accounts/login/"
LOGIN_REDIRECT_URL = "/DataApp/search/"

SESSION_EXPIRE_AT_BROWSER_CLOSE = True

SESSION_SECURITY_WARN_AFTER = 900
SESSION_SECURITY_EXPIRE_AFTER = 1200

MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'

base.html

<!-- This is nested in a div tag inside of the html class body -->
{% if messages %}
        <ul class="messages">
            {% for message in messages %}
            <li{% if message.tags %} class="{{ message.tags }}" {% endif %}>
                {{ message }}</li>
                {% endfor %}
        </ul>
{% endif %}

我希望消息在传递后显示在base.html中，但是django的登录功能似乎会在后台隐藏消息的发送。

解决方案：

base.html

<p>
    {% if not user.is_anonymous %}
        <font color="#00ccff">
            Welcome {{ user }}
        </font>
    {% endif %}
</p>

views.html

def login_view(request):
    username = request.POST['username']
    password = request.POST['password']
    user = authenticate(request, username=username, password=password)
    if user is not None:
        #Success!
        login(request, user)
        context = {
            "user": user
        }
        return render(request, "base.html", context)
    else:
        return HttpReponseRedirect("/DataApp/accounts/login/")

Answer 1

首先重命名登录功能，例如login_view等。如果那不能解决您的问题，也可以这样做

if user is not None:
    login(request, user)
    context = {
        "user": user
    }
    return render(request, "base.html", context)

{% if user %}
  Welcome {{ user }}
{% endif %}

用户登录我的网站时如何打招呼？

1 个答案: