基于Django的Admin后台实现定制简单监控页_Python

我们使用Django的Admin二次定制一个图形化界面,首先我们把语言设置为中文简体.

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									修改: settings.py

									LANGUAGE_CODE = 'zh-hans'

									TIME_ZONE = 'Asia/Shanghai'

									修改: apps.py

									from django.apps import AppConfig

									class MywebConfig(AppConfig):

									    name = 'MyWeb'

									    verbose_name = "服务器参数收集"

接着我们来定义models.py数据库模型,定义基本的数据查询.

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									from django.db import models

									from django.utils.html import format_html

									import datetime

									STATUS_CHOICES = (('d', '在用设备'), ('p', '下线设备'), ('w', '损坏设备'),)

									# 定义主机基本信息表

									class HostInfoDB(models.Model):

									    id = models.AutoField(primary_key=True)

									    # HostAddr = models.TextField(max_length=128,verbose_name="主机地址")

									    HostAddr = models.CharField(max_length=128, verbose_name="主机地址")

									    HostName = models.CharField(max_length=128, verbose_name="主机名称")

									    HostType = models.CharField(max_length=128, verbose_name="系统类型")

									    HostPosition = models.CharField(max_length=128, verbose_name="机房位置")

									    HostPlatform = models.CharField(max_length=128, verbose_name="所属平台")

									    HostGroup = models.CharField(max_length=128, verbose_name="分组")

									    HostDataTime = models.DateTimeField(verbose_name="检查日期")

									    HostUser = models.CharField(max_length=64, verbose_name="负责人")

									    hostStats = models.CharField(max_length=1, choices=STATUS_CHOICES, verbose_name="设备状态")

									    def __str__(self):

									        return self.HostName

									    # 用于给本表指定别名,这样前端就不是英文的了

									    class Meta():

									        verbose_name = "设备清单"

									        verbose_name_plural = "设备清单"

									    # 设备再用状态

									    def Status(self):

									        if self.hostStats == 'd':

									            format_td = format_html('&lt;span style="padding:2px;background-color:green;color:white"&gt;在用设备&lt;/span&gt;')

									        elif self.hostStats == 'p':

									            format_td = format_html('&lt;span style="padding:2px;background-color:yellow;color:black"&gt;下线设备&lt;/span&gt;')

									        elif self.hostStats == 'w':

									            format_td = format_html('&lt;span style="padding:2px;background-color:red;color:white"&gt;损坏设备&lt;/span&gt;')

									        return format_td

									    Status.short_description = "当前状态"

									# 指定Ping检测结果表

									class HostPingInfo(models.Model):

									    id = models.AutoField(primary_key=True)

									    HostAddr = models.CharField(max_length=128, verbose_name="主机地址")

									    flage = models.CharField(max_length=64)

									    class Meta():

									        verbose_name = "存活检测"

									        verbose_name_plural = "存活检测"

									    def Status(self):

									        if self.flage == "True":

									            ret = "已连接"

									            color = "green"

									            return format_html('&lt;span style="color:{};"&gt;{}&lt;/span&gt;',color,ret,)

									        elif self.flage == "False":

									            ret = "未连接"

									            color = "red"

									            return format_html('&lt;span style="color:{};"&gt;{}&lt;/span&gt;', color, ret,)

									    Status.short_description = "状态"

									# 定义CPU/内存利用率数据表结构

									class HostCPUOrMemInfo(models.Model):

									    id = models.AutoField(primary_key=True)

									    HostAddr = models.CharField(max_length=128, verbose_name="主机地址")

									    Cpu_Count = models.IntegerField()

									    Mem_Count = models.IntegerField()

									    class Meta():

									        verbose_name = "CPU内存性能"

									        verbose_name_plural = "CPU内存性能"

									    def Cpu_Speed(self):

									        return format_html('&lt;progress max="100" value="{}"&gt;&lt;/progress&gt;',self.Cpu_Count)

									    def Mem_Speed(self):

									        return format_html('&lt;progress max="100" value="{}"&gt;&lt;/progress&gt;',self.Mem_Count)

									    def Check(self):

									        return format_html('&lt;a href="/admin/MyWeb/hostdb/{}/change/" rel="external nofollow" &gt;查看&lt;/a&gt;',self.id)

									    Cpu_Speed.short_description = "CPU利用率"

									    Mem_Speed.short_description = "Mem利用率"

继续定制admin.py并与上方的数据库视图相交互.

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									from django.contrib import admin

									from MyWeb.models import *

									# 必须继承ModelAdmin基类,才可以调整参数,HostDB则是你的表的名称

									@admin.register(HostInfoDB)

									class MyAdmin(admin.ModelAdmin):

									    admin.site.site_title="后台管理"

									    admin.site.site_header = "自动化监控平台"

									    # list_display = 你需要展示的字段应该写在这里,此处是数据库中的字段

									    list_display = ("HostAddr","HostName","HostType","HostPosition","HostDataTime","HostPlatform","HostGroup","HostUser","Status")

									    # search_fields = 用于添加一个搜索框,此处作为查询条件

									    #search_fields = ("HostAddr","HostType","Status",)

									    # list_filter = 设置一个过滤器,此处是过滤条件

									    list_filter = ("HostAddr","HostGroup",)

									    # ordering = 设置一个排序条件,此处是以id作为排序依据

									    ordering = ("id",)

									    #list_per_page = 设置每页显示多少条记录,默认是100条

									    list_per_page = 10

									    #list_editable = 设置默认可编辑字段

									    #list_editable = ("HostName",)

									    # date_hierarchy = 显示详细时间分层筛选

									    date_hierarchy = 'HostDataTime'

									    # readonly_fields = 可以设置只读字段,就是无法修改的字段

									    #readonly_fields = ("hostCPU","hostMEM",)

									# 定义Ping检测显示字段

									@admin.register(HostPingInfo)

									class MyAdmin(admin.ModelAdmin):

									    list_display = ("HostAddr","flage","Status")

									# 定义内存CPU利用率字段

									@admin.register(HostCPUOrMemInfo)

									class MyAdmin(admin.ModelAdmin):

									    list_display = ("id","HostAddr","Cpu_Count","Cpu_Speed","Mem_Count","Mem_Speed","Check")

保存后直接执行命令,完成命令行建表操作.

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									python manage.py makemigrations

									python manage.py migrate

									python manage.py createsuperuser

保存后启动,Django并访问http://127.0.0.1:8000/admin登录后我们依次看一下定制效果.

基于Django的Admin后台实现定制简单监控页

主页中的展示效果如下.

基于Django的Admin后台实现定制简单监控页

当我们需要增加自定义动作时,可以这样写,我们以HostCPUOrMemInfo为例

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									# 定义内存CPU利用率字段

									@admin.register(HostCPUOrMemInfo)

									class MyAdmin(admin.ModelAdmin):

									    list_display = ("id","HostAddr","Cpu_Count","Cpu_Speed","Mem_Count","Mem_Speed")

									    # 添加的自定义动作,此处可执行操作

									    def func(self, request, queryset):

									        # 此处可以写一些执行动作

									        print(self, request, queryset)

									    func.short_description = "自定义active动作"

									    actions = [func, ]

									    # Action选项都是在页面上方显示

									    actions_on_top = True

									    # Action选项都是在页面下方显示

									    actions_on_bottom = False

									    # 是否显示选择个数

									    actions_selection_counter = True