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_path
from asset import views
app_name = 'asset'
urlpatterns = [
    path('cabinetslist/',views.CabinetListView.as_view(),name="cabinets"),
]

4. views.py

# 导入view
from 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_list

class 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 MySQLdb
MYSQL_HOST = '127.0.0.1'
MYSQL_PORT = 3306
MYSQL_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