一.创建App
[plain]
manage.py startapp notification
在INSTALLED_APPS中添加 'notification',
二.修改notifications/models.py
[python]
from django.db import models
from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.dispatch import receiver
class Notification(models.Model):
title =models.CharField(max_length=256)
message =models.TextField()
viewed =models.BooleanField(default=False)
user =models.ForeignKey(User)
@receiver(post_save,sender=User)
def create_welcome_message(sender,**kwargs):
if kwargs.get('created',False):
Notification.objects.create(user=kwargs.get('instance'),
title="Welcome to our Django site!",
message="Thanks for signing up!"
)
三.运行
[plain]
manage.py schemamigration notification --initial
manage.py migrate
四.修改notification/urls.py
[python]
from django.conf.urls import patterns,url
urlpatterns=patterns('notification.views',
url(r'show/(?P<notification_id>\d+)/$','show_notification'),
url(r'^delete/(?P<notification_id>\d+)/$','delete_notification'),
)
五.修改notification/view.py
[python]
from django.shortcuts import render_to_response
from django.http import HttpResponseRedirect
from models import Notification
def show_notification(request,notification_id):
n=Notification.objects.get(id=notification_id)
return render_to_response('notification.html',{'notification':n})
def delete_notification(request,notification_id):
n=Notification.objects.get(id=notification_id)
n.viewed=True
n.save()
return HttpResponseRedirect('/accounts/loggedin')
六.修改notification/templates/notification.html
[html]
{% extends "base.html" %}
{% block content %}
<h2>{{notification.title}}</h2>
<p>{{notification.message}}</p>
<p><a href="/notification/delete/{{notification.id}}/">Mark as read</a></p>
{% endblock %}
七.修改templates/loggedin.html
[html]
{% extends "base.html" %}
{% block content %}
<h2>Hi {{full_name}} you are now logged in!</h2>
{% if notifications.count >0 %}
<h3>Notifications</h3>
{% for n in notifications %}
<p><a href="/notification/show/{{n.id}}">{{n.title}}</a></p>
{% endfor %}
{% endif %}
<p>Click <a href="/accounts/logout/">here</a> to logout.</p>
<p>Click <a href="/accounts/profile/">here</a> to edit your profile information</p>
{% endblock %}
八.修改django_test/views.py
[python]
from notification.models import Notification
def loggedin(request):
n=Notification.objects.filter(user=request.user,viewed=False)
return render_to_response('loggedin.html',
{'full_name':request.user.username,'notifications':n}
)
九.修改django_test/urls.py
[python]
(r'^notification/',include('notification.urls')),
