博客基础_django_python从入门到实践_创建简易版学习笔记网页

效果

　　建立学习笔记网页。其中包括主页和话题，话题中又有具体的条目。有条目则显示，没有则提示。

　　urls.py　　views.py　　 html

　　base.html　　index.html　　topics.html　　topic.html

主页

分类

 某分类下具体条目

无条目

urls.py　　learning_log/

from django.conf.urls import urls, include
from django.contrib import admin #

urlpatterns=[
    url(r'^admin/',  admin.site.urls)
    url(r'', include('learning_logs.urls', namespace='learning_logs')),                     
]   PPhsoa

urls.py　　learning_logs/

from django.conf.urls import url
from . import views

urlpatterns=[
    url(r'^$', views.index, name='index'),
    url(r'^topics/$', views.topics, name='topics'),
    url(r'^topics/(?P<topic.id>d+)/$', views.topic, name='topic'),       
]

views.py　　learning_logs/

from django.shortcuts import render #
from .models import Topic

def index(request):
    return render(request, 'learning_logs/index.html')

def topics(request):
    topics = Topic.objects.order_by('date_added')
    context = {'topics':topics}
    return render(request, 'learning_logs/topics.html', context)

def topic(request, topic_id):
    topic = Topic.objects.get(id=topic_id)
    entries = topic.entry_set.order_by('-date_added')
    context = {'topic':topic, 'entries':entries}
    return render(request, 'learning_logs.topic.html', context)

base.html　　 / learning_log/ learning_logs/templates/learning_logs/

<p>
    <a href="{% url 'learning_logs:index' %}">Learning Log</a>-
    <a hrer="{% url 'learning_logs:topics' %}">Topics</a>
</p>

{% block content %}
{% endblock content %}

index.html　　/ learning_log/ learning_logs/templates/learning_logs/

{% extends 'learning_logs/base.html' %}

{% block content %}
   <p>Learning log helps you learn better..</p>
{% endblock content %}

topics.html  / learning_log/ learning_logs/templates/learning_logs/

{% extends 'learning_logs/bse.html' %}

{% block content %}
    <p>Topics</p>
    <ul>
        {% for topic in topics %}
            <li>
                <a href="{% url 'learning_logs:topic' topic.id %}">{{ topic }}</a>
            </li>
        {% empty %}
             No topic has been added here.
        {% endfor %}
    </ul>
{% endblock content %}    

topic.html  / learning_log/ learning_logs/templates/learning_logs/

{% extends 'learning_logs/base.html' %}

{% block content %}
    <p>Topic:{{ topic }}</p>
    <p>Entries:</p>
    <ul>
        {% for entry in entries %}
             <li>
                  <p>{{ entry.date_added|date:'M d, Y H:i' }}</p>
                  <p>{{ entry.text|linebreaks }}</p>
             </li>
         {% empty %}
              There are no entries for this topic yet.
         {% endfor %}
    </ul>
{% endblock content %}