1.  说明

重写Django框架中的ListView的get_queryset(),没有使用Django的models去建表,使用MySQLdb去连接数据库查询数据

2. 安装分页插件

pip install django-pure-pagination

3. urls.py文件

from django.urls import path,re_pathfrom asset import viewsapp_name = 'asset'urlpatterns = [    path('cabinetslist/',views.CabinetListView.as_view(),name="cabinets"),]

4. views.py

# 导入viewfrom django.views.generic import ListView# 导入自定义模块from pure_pagination.mixins import PaginationMixin# 导入model中的sql查询from .models import cabinet_listclass CabinetListView(PaginationMixin,ListView):    template_name = "asset/cabinet_list.html"    context_object_name = "cabinetslist"    paginate_by = 5    def get_queryset(self):        cabinetslist = cabinet_list()        return cabinetslist

5. model.py

#查询机房列表def cabinet_list():    sql = 'SELECT t.cabinet_id,t.cabinet_name,t.cabinet_site,t.cabinet_person,t.cabinet_phone,rack_cabinet_id,server_cabinet  from (SELECT a.cabinet_id,a.cabinet_name,a.cabinet_site,a.cabinet_person,a.cabinet_phone,COUNT(b.server_cabinet) as server_cabinet FROM cabinet a LEFT JOIN server  b ON a.cabinet_id = b.server_cabinet GROUP BY a.cabinet_id) as t,(SELECT c.cabinet_id,COUNT(d.rack_cabinet_id) AS rack_cabinet_id FROM cabinet c LEFT JOIN rack d ON c.cabinet_id = d.rack_cabinet_id GROUP BY c.cabinet_id) as p WHERE t.cabinet_id = p.cabinet_id'    rt_cnt, lines = MySQLUtil.dql(sql, (), True)    cabinets = []    for cabinet in lines:        cabinets.append({            'cabinet_id': cabinet[0],            'cabinet_name': cabinet[1],            'cabinet_site': cabinet[2],            'cabinet_person': cabinet[3],            'cabinet_phone': cabinet[4],            'cabinet_rack_count': cabinet[5],            'cabinet_server_count': cabinet[6]        })    return cabinets

6. mysqlutils.py

import MySQLdbMYSQL_HOST = '127.0.0.1'MYSQL_PORT = 3306MYSQL_USER = 'root'MYSQL_PASSWORD = ''MYSQL_DB = 'cmdb1'class MySQLUtil(object):    @staticmethod    def dql(sql, args, fetch_all=True):        rt_cnt, rt_tuple = 0, ()        conn = MySQLdb.connect(host=MYSQL_HOST, port=MYSQL_PORT, user=MYSQL_USER, passwd=MYSQL_PASSWORD, db=MYSQL_DB,                               charset='utf8mb4')        cursor = conn.cursor()        rt_cnt = cursor.execute(sql, args)        if fetch_all:            rt_tuple = cursor.fetchall()        else:            rt_tuple = cursor.fetchone()        cursor.close()        conn.close()        return rt_cnt, rt_tuple    @staticmethod    def dml(sql, args):        conn = MySQLdb.connect(host=MYSQL_HOST, port=MYSQL_PORT, user=MYSQL_USER, passwd=MYSQL_PASSWORD, db=MYSQL_DB,                           charset='utf8mb4')        cursor = conn.cursor()        rt_cnt = cursor.execute(sql, args)        conn.commit()        cursor.close()        conn.close()        return rt_cnt

7.  实现效果