自学教程：基于Django的Admin后台实现定制简单监控页

修改: settings.pyLANGUAGE_CODE = 'zh-hans'TIME_ZONE = 'Asia/Shanghai'修改: apps.pyfrom django.apps import AppConfigclass MywebConfig(AppConfig):    name = 'MyWeb'    verbose_name = "服务器参数收集"

from django.db import modelsfrom django.utils.html import format_htmlimport datetimeSTATUS_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('<span style="padding:2px;background-color:green;color:white">在用设备</span>')        elif self.hostStats == 'p':            format_td = format_html('<span style="padding:2px;background-color:yellow;color:black">下线设备</span>')        elif self.hostStats == 'w':            format_td = format_html('<span style="padding:2px;background-color:red;color:white">损坏设备</span>')        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('<span style="color:{};">{}</span>',color,ret,)        elif self.flage == "False":            ret = "未连接"            color = "red"            return format_html('<span style="color:{};">{}</span>', 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('<progress max="100" value="{}"></progress>',self.Cpu_Count)    def Mem_Speed(self):        return format_html('<progress max="100" value="{}"></progress>',self.Mem_Count)    def Check(self):        return format_html('<a href="/admin/MyWeb/hostdb/{}/change/" rel="external nofollow" >查看</a>',self.id)    Cpu_Speed.short_description = "CPU利用率"    Mem_Speed.short_description = "Mem利用率"

from django.contrib import adminfrom 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")

python manage.py makemigrationspython manage.py migratepython manage.py createsuperuser

# 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