Django: Sitzungsdaten werden nicht gespeichert

Question

Extrem neu in der Webentwicklung, versucht, Benutzereingaben in einer Form von einer Ansicht zur anderen mit der Sitzung zu übergeben.

Sitzung scheint nach der HttpResponseRedirect in meiner "get_single_input" anzeigen zurückgesetzt, da ich den "local_test" aus der Sitzung abrufen kann. Dies wird lokal in der Ansicht "single_output" festgelegt.

um Lesen und haben sogar versucht, request.session.modified = True Zugabe aber nicht funktioniert ....

im Voraus Vielen Dank für Ihre Zeit.

from django.shortcuts import render 
from django.http import HttpResponseRedirect 

from .forms import single_input 

def get_single_input(request): 
    # if this is a POST request we need to process the form data 
    if request.method == 'POST': 
     # create a form instance and populate it with data from the request: 
     form = single_input(request.POST) 

     if form.is_valid(): 
      # Iterate through the form cleaned data and add it to the session instance. 
      for k , v in form.cleaned_data.iteritems(): 
       request.session[ k ] = v 

      request.session[ "test" ] = "test" 

      request.session.modified = True 

      # Then redirect to the single_output page 
      return HttpResponseRedirect("/single_output/") 



    else: 
     form = single_input() 

    return render(request, 'single_design/input_page.html', {'form' : form }) 


def single_output(request): 

    request.session[ "local_test" ] = "local_test" 
    sess_value = request.session.values() 

    for v in request.session.itervalues(): 
     variable.append(v) 

    for k in request.session.keys(): 
     del request.session[ k ] 

    return render(request, 'single_design/output_page.html', { "variable" : variable , "sess_value" : sess_value}) 

settings.py als

angefordert

import os 

# Build paths inside the project like this: os.path.join(BASE_DIR, ...) 
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) 


# Quick-start development settings - unsuitable for production 
# See https://docs.djangoproject.com/en/1.9/howto/deployment/checklist/ 

# SECURITY WARNING: keep the secret key used in production secret! 
SECRET_KEY = '866e09kpk%a(k9&nrtk79#=54o_04)=9il=2r4b2etf4k#f!xm' 

# SECURITY WARNING: don't run with debug turned on in production! 
DEBUG = True 

ALLOWED_HOSTS = [] 


# Application definition 

INSTALLED_APPS = [ 
    'django.contrib.admin', 
    'django.contrib.auth', 
    'django.contrib.contenttypes', 
    'django.contrib.sessions', # This imports sessions for use 
    'django.contrib.messages', 
    'django.contrib.staticfiles', 
    'single_design', # Importing my app 
    ] 

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

ROOT_URLCONF = 'primers.urls' 

TEMPLATES = [ 
    { 
     'BACKEND': 'django.template.backends.django.DjangoTemplates', 
     'DIRS': [], 
     '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 = 'primers.wsgi.application' 


# Database 
# https://docs.djangoproject.com/en/1.9/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/1.9/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/1.9/topics/i18n/ 

LANGUAGE_CODE = 'en-us' 

TIME_ZONE = 'Europe/London' 

USE_I18N = True 

USE_L10N = True 

USE_TZ = True 


# Static files (CSS, JavaScript, Images) 
# https://docs.djangoproject.com/en/1.9/howto/static-files/ 

STATIC_URL = '/static/' 
STATIC_ROOT = os.path.join(BASE_DIR , 'static') 

Eingangsseite, die das Eingabeformular

{% extends 'single_design/base.html' %} 
{% block content %} 


    <body> 

     <form action="/single_output/" method="post"> 
     {% csrf_token %} 
     {{ form }} 
     <input type="submit" value="Submit" /> 
     </form> 

    </body> 

{% endblock %} 

Ausgabe rendert Seite, wo ich Schleife durch die Liste, die ich Sitzung Artikel angehängt haben.

{% extends 'single_design/base.html' %} 
{% block content %} 

    <body> 
     this is the output page 
    </body> 

    {% for x in variable %} 
     {{ x }} 
    {% endfor %} 

{{ sess_value }} 
{% endblock %} 

Answer 1

Ich kann nur an ein Szenario denken - dass Ihr Formular nie gültig ist. Die Bedingung, bei der Sie form.is_valid() überprüfen, schlägt also immer fehl.

Probieren Sie die Test-Taste, bevor diese Einstellung:

form = single_input(request.POST) 
request.session['test'] = 'test' 
if form.is_valid(): 
    ...