在主界面展示了所有文章，然后每篇文章的标题都可以点击，下面的作者也可以点击。都会跳到对应的界面来展示。但是大差不差的，导航栏和侧边栏都是一样的，所以用模板继承。
但是又有新的问题，我们左侧的侧边栏，需要进行分类，按标签分类，按类型分类，按时间分类，这三种，都是要用代码来实现的，如果用模板继承，就会没办法传参数，总不能每一次都重新写一次查询之类的代码吧。所以就要用自定义inclusion_tag。
前端代码(模板)：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
{% load static %}
<script src="{% static 'bootstrap/js/jquery.js' %}"></script>
<link rel="stylesheet" href="{% static 'bootstrap/css/bootstrap.min.css' %}">
<script src="{% static 'bootstrap/js/bootstrap.min.js' %}"></script>
<link rel="stylesheet" href="/media/css/{{ blog.site_theme }}">
{% block css %}
{% endblock %}
</head>
<body>
<nav class="navbar navbar-inverse">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">{{ blog.site_title }}</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li class="active"><a href="#">文章 <span class="sr-only">(current)</span></a></li>
<li><a href="#">随笔</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">更多 <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Separated link</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">One more separated link</a></li>
</ul>
</li>
</ul>
<form class="navbar-form navbar-left">
<div class="form-group">
<input type="text" class="form-control" placeholder="Search">
</div>
<button type="submit" class="btn btn-default">Submit</button>
</form>
<ul class="nav navbar-nav navbar-right">
{% if request.user.is_authenticated %}
<li><a href="#">{{ request.user.username }}</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">更多操作 <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="/set_password/" data-toggle="modal" data-target=".bs-example-modal-lg">修改密码</a></li>
<li><a href="/set_img/">修改头像</a></li>
<li><a href="/backend/">后台管理</a></li>
<li role="separator" class="divider"></li>
<li><a href="/logout/">注销</a></li>
</ul>
</li>
{% else %}
<li><a href="/register/">注册</a></li>
<li><a href="/login/">登录</a></li>
{% endif %}
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>
<div class="container-fluid">
<div class="row">
<div class="col-md-3">
{# 这里导入了mytag.py文件，并且给里面的index传了username这个参数 #}
{% load mytag %}
{% index username %}
</div>
<div class="col-md-9">
{% block content %}
{% endblock %}
</div>
</div>
</div>
{% block js %}
{% endblock %}
</body>
</html>
侧边栏：
<div class="panel panel-primary">
<div class="panel-heading">
<h3 class="panel-title">文章分类</h3>
</div>
<div class="panel-body">
{% for category in category_list %}
<p><a href="/{{ username }}/category/{{ category.2 }}/">{{ category.0 }}({{ category.1 }})</a></p>
{% endfor %}
</div>
</div>
<div class="panel panel-warning">
<div class="panel-heading">
<h3 class="panel-title">文章标签</h3>
</div>
<div class="panel-body">
{% for tag in tag_list %}
<p><a href="/{{ username }}/tag/{{ tag.2 }}">{{ tag.0 }}({{ tag.1 }})</a></p>
{% endfor %}
</div>
</div>
<div class="panel panel-danger">
<div class="panel-heading">
<h3 class="panel-title">日期归档</h3>
</div>
<div class="panel-body">
{% for xxx in date_list %}
<p><a href="/{{ username }}/archive/{{ xxx.0|date:'Y-m' }}/">{{ xxx.0|date:'Y年-m月' }}({{ xxx.1 }})</a></p>
{% endfor %}
</div>
</div>
后端代码：
def site(request,username,**kwargs):
user_obj = models.UserInfo.objects.filter(username=username).first()
if not user_obj:
# 返回一个404页面
return render(request,'errors.html')
blog = user_obj.blog
# 查询当前用户所有的文章数
article_list = models.Article.objects.filter(blog=blog) # queryset
"""侧边栏筛选功能 其实就是对上面的article_list再做一层筛选而已"""
if kwargs:
condition = kwargs.get('condition')
param = kwargs.get('param')
if condition == 'category':
article_list = article_list.filter(category_id=param)
elif condition == 'tag':
article_list = article_list.filter(tags__id=param)
else:
year, month = param.split('-')
article_list = article_list.filter(create_time__year=year,create_time__month=month)
# # 1.查询当前用户所有的分类及分类下的文章数
# category_list = models.Category.objects.filter(blog=blog).annotate(count_num=Count('article__pk')).values_list('name','count_num','pk')
#
# # 2.查询当前用户所有的标签及标签下的文章数
# tag_list = models.Tag.objects.filter(blog=blog).annotate(count_num=Count('article__pk')).values_list('name','count_num','pk')
#
# # 3.按照年月统计文章数
# date_list = models.Article.objects.filter(blog=blog).annotate(month=TruncMonth('create_time')).values('month').annotate(count_num=Count('pk')).order_by('-month').values_list('month','count_num')
#以上被注释掉的代码，全都写在了index函数里面。
return render(request,'site.html',locals())
mytag.py
from django.template import Library
from app01 import models
from django.db.models.functions import TruncMonth
from django.db.models import Count
register = Library()
#用这个语句来确定要传入参数的html文件，当然在这里是侧边栏
@register.inclusion_tag('left_menu.html')
def index(username):
user_obj = models.UserInfo.objects.filter(username=username).first()
blog = user_obj.blog
# 1.查询当前用户所有的分类及分类下的文章数
category_list = models.Category.objects.filter(blog=blog).annotate(count_num=Count('article__pk')).values_list(
'name', 'count_num', 'pk')
# 2.查询当前用户所有的标签及标签下的文章数
tag_list = models.Tag.objects.filter(blog=blog).annotate(count_num=Count('article__pk')).values_list('name',
'count_num',
'pk')
# 3.按照年月统计文章数
date_list = models.Article.objects.filter(blog=blog).annotate(month=TruncMonth('create_time')).values(
'month').annotate(count_num=Count('pk')).order_by('-month').values_list('month', 'count_num')
return locals()
# return {'username':username,'blog':blog}
路由层
# 个人站点
url(r'^(?P<username>w+)/$',views.site),
# 侧边栏筛选功能
# url(r'^(?P<username>w+)/category/(d+)/',views.site),
# url(r'^(?P<username>w+)/tag/(d+)/',views.site),
# url(r'^(?P<username>w+)/archive/(w+)/',views.site),
# 上面的三条url可以合成一条
url(r'^(?P<username>w+)/(?P<condition>category|tag|archive)/(?P<param>.*)/', views.site),