python学习笔记_week25

note

Day25
    - 博客
        - KindEditor
            - beautifulsoup4对标签进行过滤
            - 单例模式
        - 事务操作
             - from django.db import transaction
        - 筛选条件
             - 利用数据库内置函数实现筛选
        作业：
            - 示例
            - 评论和点赞
        pip3 install beautifulsoup4
    - CMDB    http://www.cnblogs.com/wupeiqi/articles/6192986.html
        1. 资产自动收集
        2. API （URL）
        3. 可视化管理
        1. 资产自动收集
            - paramiko，ansible，fabric
              通过API获取主机名，利用paramiko链接服务获取数据，解析成字典
              优点：无依赖
              缺点：慢
            - saltstack
              通过API获取主机名，利用salt api链接服务获取数据，解析成字典
              优点：无依赖
              缺点：有点慢
              - pillar
            - puppet
              - 知识概要：
                master
                slave: certname  唯一标识）
                slave: certname
                配置文件：30分钟 master和slave进行一次连接
              - report报表
                配置文件
                  report: cmdb  # 每30分钟交互时，回执行制定目录的下cmdb.rb文件中的process函数
              - 自定义factor
            - Agent
                - 缺点：每台有agent
                - 优点：快
                v = subprocess.getoutput('hostname')
            ===================== 执行shell命令[网卡][硬盘]...，获取结果 =======================            

    - JSONP - 棘手的问题 跨域请求
        import requests
        request.get('http://www.baidu.com')
        request.post('http://www.baidu.com')

        由于浏览器具有同源策略（阻止Ajax请求，无法阻止<script src='...'></script>）
        巧妙：
            - 创建script标签
            - src=远程地址
            - 返回的数据必须是js格式
        只能发GET请求

        CORS  ---http://www.cnblogs.com/wupeiqi/articles/5703697.html

filter

 from django import template
 from django.utils.safestring import mark_safe
 register = template.Library()
 @register.simple_tag
 def filter_all(arg_dict,k):
     """
     {% if arg_dict.article_type_id == 0 %}
         <a class="active" href="/article-0-{{ arg_dict.category_id }}.html">全部</a>
     {% else %}
         <a  href="/article-0-{{ arg_dict.category_id }}.html">全部</a>
     {% endif %}
     :return:
     """
     if k == 'article_type_id':
         n1 = arg_dict['article_type_id']
         n2 = arg_dict['category_id']
         if n1 == 0:
             ret = '<a class="active" href="/article-0-%s.html">全部</a>' % n2
         else:
             ret = '<a href="/article-0-%s.html">全部</a>' % n2
     else:
         n1 = arg_dict['category_id']
         n2 = arg_dict['article_type_id']
         if n1 == 0:
             ret = '<a class="active" href="/article-%s-0.html">全部</a>' % n2
         else:
             ret = '<a href="/article-%s-0.html">全部</a>' % n2
     return mark_safe(ret)
 @register.simple_tag
 def filter_article_type(article_type_list,arg_dict):
     """
     {% for row in article_type_list %}
         {% if row.id == arg_dict.article_type_id %}

         {% else %}
             <a  href="/article-{{ row.id  }}-{{ arg_dict.category_id }}.html">{{ row.caption }}</a>
         {% endif %}
     {% endfor %}
     :return:
     """
     ret = []
     for row in article_type_list:
         if row[0] == arg_dict['article_type_id']:
             temp = '<a class="active" href="/article-%s-%s.html">%s</a>' %(row[0],arg_dict['category_id'],row[1],)
         else:
             temp = '<a href="/article-%s-%s.html">%s</a>' %(row[0],arg_dict['category_id'],row[1],)
         ret.append(temp)
     return mark_safe(''.join(ret))

models

 from django.db import models
 # Create your models here.
 class Category(models.Model):
     caption = models.CharField(max_length=16)
 # class ArticleType(models.Model):
 #     caption = models.CharField(max_length=16)
 class Article(models.Model):
     title = models.CharField(max_length=32)
     content = models.CharField(max_length=255)
     category = models.ForeignKey(Category,on_delete=models.CASCADE)
     # article_type = models.ForeignKey(ArticleType)
     type_choice = (
         (1,'Python'),
         (2,'OpenStack'),
         (3,'Linux'),
     )
     article_type_id = models.IntegerField(choices=type_choice)

app01_views

 from django.shortcuts import render
 from app01 import models
 def article(request,*args,**kwargs):
     print(kwargs)
     # print(request.path_info) # 获取当前URL
     # from django.urls import reverse
     # # {'article_type_id': '0', 'category_id': '0'}
     # url = reverse('article',kwargs={'article_type_id': '1', 'category_id': '0'})
     # print(url)
     # print(kwargs) # {'article_type_id': '0', 'category_id': '0'}
     condition = {}
     for k,v in kwargs.items():
         kwargs[k] = int(v)
         if v == '':
             pass
         else:
             condition[k] = v
     # article_type_list = models.ArticleType.objects.all()
     article_type_list = models.Article.type_choice
     category_list = models.Category.objects.all()
     result = models.Article.objects.filter(**condition)
     return  render(
         request,
         'article.html',
         {
             'result': result,
             'article_type_list': article_type_list,
             'category_list': category_list,
             'arg_dict': kwargs
         }
     )

app02_views

 from django.shortcuts import render
 import requests
 # pip3 install requests
 # Create your views here.
 def req(request):
     response = requests.get('http://weatherapi.market.xiaomi.com/wtr-v2/weather?cityId=101121301')
     #print(response.content) # 字节
     response.encoding = 'utf-8'
     #print(response.text)    # 字符串
     return render(request, 'req.html',{'result': response.text})

urls

 from django.conf.urls import url
 from django.contrib import admin
 from app01 import views
 from app02 import views as a2
 urlpatterns = [
     url(r'^admin/', admin.site.urls),
     url(r'^req/', a2.req),
     url(r'^article-(?P<article_type_id>\d+)-(?P<category_id>\d+).html',views.article,name='article'),
 ]

article

 {% load filter %}
 <!DOCTYPE html>
 <html lang="en">
 <head>
     <meta charset="UTF-8">
     <title></title>
     <style>
         .condition a{
             display: inline-block;
             padding: 3px 5px;
             border: 1px solid #dddddd;
             margin: 5px ;
         }
         .condition a.active{
             background-color: brown;
         }
     </style>
 </head>
 <body>
     <h1>过滤条件</h1>
     <div class="condition">
         <div>
             {% filter_all arg_dict 'article_type_id' %}
             {% filter_article_type article_type_list arg_dict %}
         </div>

         <div>
             {% filter_all arg_dict 'category_id' %}
             {% for row in category_list %}
                 {% if row.id == arg_dict.category_id %}
                     <a class="active" href="/article-{{ arg_dict.article_type_id }}-{{ row.id  }}.html">{{ row.caption }}</a>
                 {% else %}
                     <a href="/article-{{ arg_dict.article_type_id }}-{{ row.id  }}.html">{{ row.caption }}</a>
                 {% endif %}
             {% endfor %}
         </div>
     </div>
     <h1>查询结果</h1>
     <ul>
         {% for row in result %}
             <li>{{ row.id }}-{{ row.title }}</li>
         {% endfor %}
     </ul>
 </body>
 </html>

req

 <!DOCTYPE html>
 <html lang="en">
 <head>
     <meta charset="UTF-8">
     <title></title>
 </head>
 <body>
     <h1>后台获取的结果</h1>
     {{ result }}
     <h1>js直接获取结果</h1>
     <input type="button" value="获取数据" onclick="getContent();" />
     <div id="container"></div>
     <script src="/static/jquery-1.8.2.js"></script>
     <script>
         function getContent(){
             /*
             var xhr = new XMLHttpRequest();
             xhr.open('GET','http://wupeiqi.com:8001/jsonp.html?k1=v1&k2=v2');
             xhr.onreadystatechange = function(){
                 console.log(xhr.responseText);
             };
             xhr.send();
             */
             /*
             var tag = document.createElement('script');
             tag.src = 'http://www.jxntv.cn/data/jmd-jxtv2.html?callback=list&_=1454376870403';
             document.head.appendChild(tag);
             document.head.removeChild(tag);
             */
             $.ajax({
                 url: 'http://www.jxntv.cn/data/jmd-jxtv2.html',
                 type: 'POST',
                 dataType: 'jsonp',
                 jsonp: 'callback',
                 jsonpCallback: 'list'
             })
         }
         function list(arg){
             console.log(arg);
         }
     </script>
 </body>
 </html>

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