用django写个CMS系统

上一篇介绍过django自带的flatpages，能够做简单的CMS。但是对于我们的真正的工作中的使用意义并不大。还是自己动手写一个吧。

不用说，一定是先从models开始的：

 1 from django.db import models
 2 
 3 # Create your models here.
 4 
 5 from django.contrib.auth.models import User
 6 from django.db.models import permalink
 7 from markdown import markdown
 8 from django.utils import timezone
 9 from DjangoUeditor.models import UEditorField
10 
11 VIEWABLE_STATUS=[3,4]
12 
13 
14 class ViewableManager(models.Manager):
15     def ge_query_set(self):
16         default_queryset = super(ViewableManager,self).get_queryset()
17         return default_queryset.filter(status__in = VIEWABLE_STATUS)
18 
19 
20 class Story(models.Model):
21     STATUS_CHOICES= (
22         (1,"Need Edit"),
23         (2,"Need Approval"),
24         (3,"Published"),
25         (4,"Archived"),
26     )
27     title = models.CharField(max_length=100)
28     slug = models.SlugField()
29     category = models.ForeignKey("Category")
30     markdown_content = UEditorField('内容', height=300, width=1000,
31         default=u'', blank=True, imagePath="uploads/images/",
32         toolbars='besttome', filePath='uploads/files/')
33     html_content = models.TextField(editable=False)
34     owner = models.ForeignKey(User)
35     status = models.IntegerField(choices=STATUS_CHOICES,default=1)
36     created = models.DateTimeField(auto_now_add=True)
37     modified= models.DateTimeField(auto_now=True)
38     class Meta:
39         ordering =['modified']
40         verbose_name_plural= '新闻故事'
41     admin_objects = models.Manager()
42     objects = ViewableManager()
43 
44     def save(self,*args,**kwargs):
45         self.html_content = markdown(self.makedown_content)
46         self.modified= timezone.now()
47         super(Story,self).save(*args,**kwargs)
48 
49     @permalink
50     def get_absolute_url(self):
51         return ('cms-story',None,{'slug':self.slug})
52 
53     def __str__(self):
54         return self.title
55 
56 
57 class Category(models.Model):
58     label = models.CharField(max_length=64)
59     slug = models.SlugField()
60 
61     class Meta:
62         verbose_name_plural="分类"
63 
64     def __str__(self):
65         return self.label

model中有几个需要注意的地方：

1、自定义了Story类的manger，这个是为了在使用queryset的时候objects.all()等查询数据库时只显示已经发布或者存档的文章或新闻

2、修改了markdown_content为UEditorField字段，可能很多小伙伴没见过，表着急，这个后面会解释，可以先改成TextField字段

3、重写了save方法，在保存数据的时候生成html_content

接下来是url

from django.views.generic import ListView,DetailView

from cms.views import category,StoryDetailView,StoryListView,search


urlpatterns = [
    url(r'^$',StoryListView.as_view(),name="cms-home"),
    url(r'^story/(?P<slug>[-_\w]+)/$',StoryDetailView.as_view(),name="cms-story"),
    url(r'^category/(?P<slug>[-_\w]+)/$',category,name="cms-category"),
    url(r'^search/$',search,name="cms-search"),
]

好吧，路由分配系统写完了之后，就该开始写我们的试图了，我这里用了两个通用类试图，可能某些小伙伴不太习惯吧，你写成试图函数也可以的，用我们领导的经典语句：“嗯哼，这都没有关系~~~”。

from django.shortcuts import render,get_object_or_404,render_to_response
from django.db.models import Q
from cms.models import Category,Story
from django.views.generic import ListView,DetailView
# Create your views here.

def category(request,slug):
    category_obj = get_object_or_404(Category,slug=slug)
    story_list = Story.objects.filter(category=category_obj)
    heading = "Category:%s"%category_obj.label
return render(request,'cms/story_list.html',locals())

class StoryListView(ListView):
    model = Story
    template_name = 'cms/story_list.html'
    context_object_name = "story_list"

class StoryDetailView(DetailView):
    model = Story
    template_name = "cms/story_detail.html"
    context_object_name = "story"

def search(request):
print(request.GET)
if 'q' in request.GET:

        term = request.GET.get('q')
        story_list = Story.objects.filter(Q(title__icontains=term)|Q(makedown_content__icontains=term)).all()
        heading = "检索结果"
return render(request,"cms/story_list.html",locals())

看看这些试图都干了些什么吧，展示文章列表，展示分类文章，展示文章详情，一个简单的查询。

前端页面的代码实在是懒得弄了，简单凑合一下吧

首先写一个母版base.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>{% block title %}{% endblock %}</title>
    <style>
        body{margin: 15px;
            font-family: "Arial Black";
        }
        h1,h2{background: #aaa;
            padding: 1% 2%;
            margin: 0;
        }
        a{text-decoration: none;
            color: #444;
        }
        .small{
            font-size: 75%;
            color: #777;
        }
#header{
            font-weight: bold;background: #ccc;padding: 1% 2%;
        }
#story_body{
            background: #ccc;
            padding: 2%;
        }
#story_list{
            background: #ccc;
            padding: 1% 1% 1% 2%;
        }
#story_list li{
            margin: 0.5em 0;
        }

</style>
</head>
<body>
        <div id="header">
            <form action="{% url 'cms-search' %}" method="get">
                <a href="{% url 'cms-home' %}">Home</a>
                <span style="padding: 0 50px"></span>
                <label for="q">Search</label><input type="text" name="q"/>
            </form>
        </div>
        {% block content %}{% endblock %}
</body>
</html>

接下来是文章列表的展示了cms/story_list.html

{% extends "base.html" %}
{% block title %}
    {{ heading }}
{% endblock %}

{% block content %}
    {% if heading %}
<h1>{{ heading }}</h1>
    {% endif %}
<ul id="story_list">
        {% for story in story_list %}
<li><a href="{{ story.get_absolute_url }}">{{ story.title }}</a></li>
        {% endfor %}
</ul>
{% endblock %}

最好不要把html中的url写死了，方便你以后的扩展或修改

接下来是文章详情展示

{% extends "base.html" %}
{% block title %}
    {{ story.title }}
{% endblock %}
{% block content %}
<h1>{{ story.title }}</h1>
    <h2><a href="{% url "cms-category" story.category.slug %}">{{ story.category }}</a></h2>
    <div id="story-body">
        {{ story.html_content|safe }}
<p class="small">{{ story.modified }}</p>
    </div>
{% endblock %}

效果图

用django写个CMS系统

最后在来解释一下model中的UEditorField字段，这个是因为我觉得admin后台的text文本框字段太low了，添加了一个富文本编辑器

用django写个CMS系统

实在是太困了，具体的做法以后再细说吧，网上也有很多这种的教程，自己搜一个吧

秒客网

用django写个CMS系统

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