后台管理-xadmin

2022-09-14 17:52:02 浏览数 (1)

一、特点与解释

  • Xadmin介绍 直接替换掉Django自带的admin系统，并提供了很多有用的东西；完全的可扩展的插件支持，基于Twitter Bootstrap的漂亮UI 本课程使用版本为：python3.7 Django2.2.3 xadmin2
  • Xadmin特点
    • 完全替代Django admin
    • 支持基于Twitter Bootstrap的UI主题
    • 支持可扩展的插件
    • 更好的过滤器，日期范围，数量范围等
    • 内置xls，csv，xml和json格式数据导出
    • 仪表板页面和小部件支持
    • 现场书签
    • 完整的CURD方法（增删改查）

二、xadmin安装与配置

安装

pip install xadmin2

配置settings.py

代码语言：javascript复制
INSTALLED_APPS = [
    ....
    <span class="hljs-string">'xadmin'</span>,
    <span class="hljs-string">'crispy_forms'</span>,
]

<span class="hljs-comment"># 修改使用中文界面</span>
LANGUAGE_CODE = <span class="hljs-string">'zh-Hans'</span>

<span class="hljs-comment"># 修改时区</span>
TIME_ZONE = <span class="hljs-string">'Asia/Shanghai'</span>

配置路由

代码语言：javascript复制
<span class="hljs-keyword">import</span> xadmin


urlpatterns = [
    <span class="hljs-comment"># path('admin/', admin.site.urls),</span>
    path(<span class="hljs-string">'xadmin/'</span>, xadmin.site.urls),
]

执行迁移 创建xadmin所需表

python manage.py migrate

创建用户

python manage.py createsuperuser

三、模型类

班级表

代码语言：javascript复制
<span class="hljs-keyword">from</span> django.db <span class="hljs-keyword">import</span> models

<span class="hljs-comment"># Create your models here.</span>
<span class="hljs-comment"># 班级表</span>
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Grades</span><span class="hljs-params">(models.Model)</span>:</span>
    gname = models.CharField(max_length=<span class="hljs-number">15</span>, verbose_name=<span class="hljs-string">'班级名称'</span>)
    gnum = models.IntegerField(verbose_name=<span class="hljs-string">'班级总人数'</span>)
    ggirlnum = models.IntegerField(verbose_name=<span class="hljs-string">'女生人数'</span>)
    gboynum = models.IntegerField(verbose_name=<span class="hljs-string">'男生人数'</span>)
    isDelete = models.BooleanField(default=<span class="hljs-keyword">False</span>, verbose_name=<span class="hljs-string">'是否删除'</span>)
    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">__str__</span><span class="hljs-params">(self)</span>:</span>
        <span class="hljs-keyword">return</span> self.gname
    <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Meta</span>:</span>
        db_table = <span class="hljs-string">'grades'</span>

学生表

代码语言：javascript复制
<span class="hljs-comment"># 学生表</span>
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Students</span><span class="hljs-params">(models.Model)</span>:</span>
    sname = models.CharField(max_length=<span class="hljs-number">10</span>, verbose_name=<span class="hljs-string">'学生名字'</span>)
    ssex = models.BooleanField(default=<span class="hljs-keyword">True</span>, verbose_name=<span class="hljs-string">'性别'</span>)
    sage = models.IntegerField(default=<span class="hljs-number">20</span>, verbose_name=<span class="hljs-string">'年龄'</span>)
    sgrade = models.ForeignKey(Grades, on_delete=models.CASCADE, verbose_name=<span class="hljs-string">'班级'</span>)
    isDelete = models.BooleanField(default=<span class="hljs-keyword">False</span>, verbose_name=<span class="hljs-string">'是否删除'</span>)
    join = models.DateField(auto_now_add=<span class="hljs-keyword">True</span>)

    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">__str__</span><span class="hljs-params">(self)</span>:</span>
        <span class="hljs-keyword">return</span> self.sname
    <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Meta</span>:</span>
        db_table = <span class="hljs-string">'students'</span>

四、Xadmin使用

增加用户组件报错解决

原因：render函数在django2.1上有变化

解决方案：

在Python终端输入命令help(‘xadmin’) 查看xadmin安装位置 得到如下输出

代码语言：javascript复制
FILE
     /Users/xialigang/Desktop/do_xadmin/venv/lib/python3<span class="hljs-number">.7</span>/site-packages/xadmin/__init__.py
代码语言：javascript复制

进入xadmin安装路径，编辑xadmin/views/dashboard.py

代码语言：javascript复制
 <span class="hljs-number">36</span>     <span class="hljs-comment">#render() got an unexpected keyword argument 'renderer'</span>
<span class="hljs-number">37</span>     <span class="hljs-comment">#修改bug, 添加renderer</span>
  <span class="hljs-number">38</span>     <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">render</span><span class="hljs-params">(self, name, value, attrs=None, renderer=None)</span>:</span>

设置app标题

App/apps.py

代码语言：javascript复制
rom django.apps <span class="hljs-keyword">import</span> AppConfig

<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">AppConfig</span><span class="hljs-params">(AppConfig)</span>:</span>
  	<span class="hljs-comment"># app名</span>
  name = <span class="hljs-string">'App'</span>
    verbose_name = <span class="hljs-string">'模型管理'</span>
代码语言：javascript复制
App/__init__.py
  
  ```python
  default_app_config='App.apps.AppConfig'

站点的全局配置

主题配置

  • enable_themes = True 开启主题切换功能

use_bootswatch = True 支持切换主题

全局配置

site_title = “lucky 后台管理系统” 设置站点标题

site_footer = “lucky底部栏” 设置站点的页脚

menu_style = “accordion” 设置菜单折叠，在左侧，默认的

  • global_search_models = [Grades, Students] 设置全局搜索模型

global_models_icon 设置models的全局图标

代码语言：javascript复制
  global_models_icon = {
        Grades: <span class="hljs-string">"glyphicon glyphicon-user"</span>, Students: <span class="hljs-string">"fa fa-cloud"</span>
  }

实例

代码语言：javascript复制
  <span class="hljs-keyword">import</span> xadmin
<span class="hljs-keyword">from</span> xadmin <span class="hljs-keyword">import</span> views
  
  
  <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">BaseSetting</span><span class="hljs-params">(object)</span>:</span>
    <span class="hljs-string">"""xadmin的基本配置"""</span>
      enable_themes = <span class="hljs-keyword">True</span>      <span class="hljs-comment"># 开启主题切换功能</span>
    use_bootswatch = <span class="hljs-keyword">True</span>     <span class="hljs-comment"># 支持切换主题</span>
  
xadmin.site.register(views.BaseAdminView, BaseSetting)
  
  <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">GlobalSettings</span><span class="hljs-params">(object)</span>:</span>
      <span class="hljs-string">"""xadmin的全局配置"""</span>
    site_title = <span class="hljs-string">"lucky后台管理系统"</span>   <span class="hljs-comment"># 设置站点标题</span>
      site_footer = <span class="hljs-string">"lucky底部栏"</span>     <span class="hljs-comment"># 设置站点的页脚</span>
    menu_style = <span class="hljs-string">"accordion"</span>    <span class="hljs-comment"># 设置菜单折叠，在左侧，默认的</span>
      global_search_models = [Grades, Students]
    <span class="hljs-comment"># 设置models的全局图标, Grades, Students 为模型类名</span>
      global_models_icon = {
          Grades: <span class="hljs-string">"glyphicon glyphicon-user"</span>, Students: <span class="hljs-string">"fa fa-cloud"</span>
      }
xadmin.site.register(views.CommAdminView, GlobalSettings)

模型类配置属性与实例

菜单的图标

model_icon

代码语言：javascript复制
model_icon = <span class="hljs-string">'fa fa-image'</span>

列表显示内容

list_display

代码语言：javascript复制
list_display = (<span class="hljs-string">'pk'</span>, <span class="hljs-string">'gname'</span>, <span class="hljs-string">'gnum'</span>, <span class="hljs-string">'ggirlnum'</span>, <span class="hljs-string">'gboynum'</span>, <span class="hljs-string">'isDelete'</span>)

设置默认可编辑字段

list_display_links

代码语言：javascript复制
list_display_links = (<span class="hljs-string">'gname'</span>, <span class="hljs-string">'gnum'</span>)

分页显示

list_per_page

代码语言：javascript复制
list_per_page = <span class="hljs-number">2</span>

显示数据详情

show_detail_fields

代码语言：javascript复制
show_detail_fields = [<span class="hljs-string">'gname'</span>]

指定列表页的数据定时刷新

refresh_times

代码语言：javascript复制
refresh_times=(<span class="hljs-number">3</span>,<span class="hljs-number">5</span>)  <span class="hljs-comment"># 3/5秒进行刷新</span>

该指定可以过滤的列的名字, 系统会自动生成搜索器

list_filter

代码语言：javascript复制
list_filter = (<span class="hljs-string">'gname'</span>,)

表单显示内容

fields

代码语言：javascript复制
fields = (<span class="hljs-string">'gname'</span>, <span class="hljs-string">'gnum'</span>, <span class="hljs-string">'ggirlnum'</span>, <span class="hljs-string">'gboynum'</span>, <span class="hljs-string">'isDelete'</span>)

搜索字段

search_fields

代码语言：javascript复制
search_fields = (<span class="hljs-string">'gname'</span>, <span class="hljs-string">'gnum'</span> )

模型类配置使用实例

代码语言：javascript复制
<span class="hljs-keyword">from</span> App.models <span class="hljs-keyword">import</span> Grades, Students

<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">GradesAdmin</span><span class="hljs-params">(object)</span>:</span>
    <span class="hljs-comment"># 菜单的图标</span>
    model_icon = <span class="hljs-string">'fa fa-image'</span>
    <span class="hljs-comment"># 列表显示内容</span>
    list_display = (<span class="hljs-string">'pk'</span>, <span class="hljs-string">'gname'</span>, <span class="hljs-string">'gnum'</span>, <span class="hljs-string">'ggirlnum'</span>, <span class="hljs-string">'gboynum'</span>, <span class="hljs-string">'isDelete'</span>)
    <span class="hljs-comment"># 设置默认可编辑字段</span>
    list_display_links = (<span class="hljs-string">'gname'</span>, <span class="hljs-string">'gnum'</span>)
    <span class="hljs-comment"># 分页显示</span>
    list_per_page = <span class="hljs-number">2</span>
    <span class="hljs-comment"># 显示数据详情 </span>
    show_detail_fields = [<span class="hljs-string">'gname'</span>]
    <span class="hljs-comment"># 3/5秒进行刷新</span>
    refresh_times=(<span class="hljs-number">3</span>,<span class="hljs-number">5</span>)
    <span class="hljs-comment"># 过滤器</span>
    list_filter = (<span class="hljs-string">'gname'</span>,)
    <span class="hljs-comment"># 表单显示内容</span>
    fields = (<span class="hljs-string">'gname'</span>, <span class="hljs-string">'gnum'</span>, <span class="hljs-string">'ggirlnum'</span>, <span class="hljs-string">'gboynum'</span>, <span class="hljs-string">'isDelete'</span>)
    <span class="hljs-comment"># 搜索字段</span>
    search_fields = (<span class="hljs-string">'gname'</span>, <span class="hljs-string">'gnum'</span> )

xadmin.site.register(Grades, GradesAdmin)
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">StudentsAdmin</span><span class="hljs-params">(object)</span>:</span>
    <span class="hljs-comment"># 菜单的图标</span>
    model_icon = <span class="hljs-string">'fa fa-image'</span>
    <span class="hljs-comment"># 列表显示内容</span>
    list_display = (<span class="hljs-string">'pk'</span>,<span class="hljs-string">'sname'</span>, <span class="hljs-string">'ssex'</span>, <span class="hljs-string">'sage'</span>, <span class="hljs-string">'sgrade'</span>)
    <span class="hljs-comment"># list_display_links 设置默认可编辑字段</span>
    list_display_links = (<span class="hljs-string">'sname'</span>, <span class="hljs-string">'sage'</span>)
    <span class="hljs-comment"># 分页显示</span>
    list_per_page = <span class="hljs-number">2</span>
    <span class="hljs-comment"># 过滤器</span>
    list_filter = (<span class="hljs-string">'sname'</span>,)
    <span class="hljs-comment"># 表单显示内容</span>
    fields = (<span class="hljs-string">'sname'</span>,<span class="hljs-string">'ssex'</span>, <span class="hljs-string">'sage'</span>, <span class="hljs-string">'sgrade'</span>, <span class="hljs-string">'isDelete'</span>)
    <span class="hljs-comment"># 搜索字段</span>
    search_fields = (<span class="hljs-string">'sname'</span>, <span class="hljs-string">'sage'</span> )
xadmin.site.register(Students, StudentsAdmin)

图表主要属性

  • title 图表的显示名称
  • x-field 图表的 X 轴数据列, 一般是日期, 时间等
  • y-field 图表的 Y 轴数据列, 该项是一个 list, 可以同时设定多个列, 这样多个列的数据会在同一个图表中显示
  • order 排序信息, 如果不写则使用数据列表的排序

配置students走势展示图表

代码语言：javascript复制
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">StudentsAdmin</span><span class="hljs-params">(object)</span>:</span>
		...
    data_charts = {
            <span class="hljs-string">"students_count"</span>: {<span class="hljs-string">'title'</span>: <span class="hljs-string">"Students Register Charts"</span>, <span class="hljs-string">"x-field"</span>: <span class="hljs-string">"join"</span>, <span class="hljs-string">"y-field"</span>: (<span class="hljs-string">"id"</span>,),
                           <span class="hljs-string">"order"</span>: (<span class="hljs-string">'join'</span>,)},
        }

自定义导航菜单顺序

代码语言：javascript复制
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">GlobalSettings</span><span class="hljs-params">(object)</span>:</span>
    <span class="hljs-string">"""xadmin的全局配置"""</span>
    ...
    <span class="hljs-comment"># 菜单顺序</span>
    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get_site_menu</span><span class="hljs-params">(self)</span>:</span>
        <span class="hljs-keyword">return</span> (
            {<span class="hljs-string">'title'</span>: <span class="hljs-string">'模型管理'</span>, <span class="hljs-string">'menus'</span>: (
                {<span class="hljs-string">'title'</span>: <span class="hljs-string">'班级信息'</span>, <span class="hljs-string">'url'</span>: self.get_model_url(Grades, <span class="hljs-string">'changelist'</span>), <span class="hljs-string">'icon'</span>: <span class="hljs-string">'glyphicon glyphicon-user'</span>},
                {<span class="hljs-string">'title'</span>: <span class="hljs-string">'学生信息'</span>, <span class="hljs-string">'url'</span>: self.get_model_url(Students, <span class="hljs-string">'changelist'</span>), <span class="hljs-string">'icon'</span>:<span class="hljs-string">'fa fa-cloud'</span>},
          )},
        )
xadmin.site.register(views.CommAdminView, GlobalSettings)

注意：参数changelist为固定值

设置只读字段

说明：在使用xadmin的时候，ModelAdmin默认只有对于model的增删改查，但是总是有些字段是不希望用户来编辑的。而 readonly_fields 设置之后不管是admin还是其他用户都会变成只读，而我们通常只是想限制普通用户。 这时我们就可以通过重写 get_readonly_fields 方法来实现对特定用户的只读显示

代码语言：javascript复制
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">StudentsAdmin</span><span class="hljs-params">(object)</span>:</span>
    ...
    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get_readonly_fields</span><span class="hljs-params">(self, **kwargs)</span>:</span>
        <span class="hljs-string">"""  重新定义此函数，限制普通用户所能修改的字段  """</span>
        print(self.org_obj)
        <span class="hljs-keyword">if</span> self.user.is_superuser:
            self.readonly_fields = []
        <span class="hljs-keyword">return</span> self.readonly_fields

    readonly_fields = (<span class="hljs-string">'sname'</span>,)

list_display使用自定义函数

需求：性别改为男女

代码语言：javascript复制
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">StudentsAdmin</span><span class="hljs-params">(object)</span>:</span>
    <span class="hljs-comment"># 菜单的图标</span>
    model_icon = <span class="hljs-string">'fa fa-image'</span>

    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">gender</span><span class="hljs-params">(self, obj)</span>:</span>
        <span class="hljs-keyword">if</span> obj.ssex:
            <span class="hljs-keyword">return</span> <span class="hljs-string">"男"</span>
        <span class="hljs-keyword">else</span>:
            <span class="hljs-keyword">return</span> <span class="hljs-string">"女"</span>

    gender.short_description = <span class="hljs-string">'性别'</span>
    <span class="hljs-comment"># 列表显示内容</span>
    list_display = (<span class="hljs-string">'pk'</span>,<span class="hljs-string">'sname'</span>, <span class="hljs-string">'gender'</span>, <span class="hljs-string">'sage'</span>, <span class="hljs-string">'sgrade'</span>)
    ...

inlines 机制

说明：如果想添加数据的同时方便添加关联model，inlines 机制 同一个页面 可以添加 所有的相关信息

需求：在添加班级的时候添加几个学生

代码语言：javascript复制
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">StudentsInline</span>:</span>
    model = Students  <span class="hljs-comment"># 要添加数据关联模型</span>
    extra = <span class="hljs-number">2</span>  <span class="hljs-comment"># 添加数据的条数</span>

<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">GradesAdmin</span><span class="hljs-params">(object)</span>:</span>
    inlines = [StudentsInline]

注意：还可以在修改班级的时候修改对应关联模型的数据

添加数据

修改数据

重载修改显示样式

说明：在要改变数据时候样式的模型类Admin添加如下代码

代码语言：javascript复制
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">StudentsAdmin</span><span class="hljs-params">(object)</span>:</span>
  	...
		<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">get_form_layout</span><span class="hljs-params">(self)</span>:</span>
        <span class="hljs-keyword">if</span> self.org_obj:
            self.form_layout = (
                Main(
                    Fieldset(<span class="hljs-string">''</span>,
                             <span class="hljs-string">'sname'</span>,
                             css_class=<span class="hljs-string">'unsort no_title'</span>  <span class="hljs-comment"># 没有标题</span>
                             ),
                    Fieldset((<span class="hljs-string">'基本信息'</span>),
                             Row(<span class="hljs-string">'ssex'</span>, <span class="hljs-string">'sage'</span>),  <span class="hljs-comment"># 显示在一行</span>
                             <span class="hljs-string">'email'</span>
                             ),
                    Fieldset((<span class="hljs-string">'班级信息'</span>),
                             <span class="hljs-string">'sgrade'</span>
                             ),
                    ),
                Side(  <span class="hljs-comment">#  侧面展示</span>
                    Fieldset((<span class="hljs-string">'Status'</span>),
                             <span class="hljs-string">'isDelete'</span>
                   ),
                )
            )
        <span class="hljs-keyword">return</span> super().get_form_layout()

模型编辑页面Field分区显示–form_layout

在admin.py中我们可以通过Fieldsets去设置字段的分块显示 界面显示会上下分区，分为名字为空和名字为其它的两个区域。

而在xadmin.py中，这个字段不再生效，需用form_layout去设置。

可分为Main主区域和Side侧边区域，Main或Side中又可通过Fieldset再分多个区域。Fieldset为一个元组，第一个字段为需要设置的名称，其它字段均为模型中的字段名

如下：

代码语言：javascript复制
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">StudentsAdmin</span><span class="hljs-params">(object)</span>:</span>
		...
		form_layout = (
        Main(
            Fieldset(<span class="hljs-string">'基础信息'</span>,
                     <span class="hljs-string">'sname'</span>),
            Fieldset(<span class="hljs-string">'EXTRA'</span>,
                     <span class="hljs-string">'ssex'</span>, <span class="hljs-string">'sage'</span>, <span class="hljs-string">'sgrade'</span>),
        ),
        Side(
            Fieldset(<span class="hljs-string">'其它'</span>,
                     <span class="hljs-string">'isDelete'</span>),
        )
    )

注意：如果form_layout与get_form_layout同时存在 则form_layout仅在添加数据的时候进行分区样式展示 如果get_form_layout不存在 则添加与修改都进行分区显示

增加页面显示列的跳转

显示自定义的html代码

models.py

代码语言：javascript复制
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Grade</span><span class="hljs-params">(models.Model)</span>:</span>
    .
    .
    .
    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">go_to</span><span class="hljs-params">(self)</span>:</span>
        <span class="hljs-keyword">from</span> django.utils.safestring <span class="hljs-keyword">import</span> mark_safe
        <span class="hljs-comment"># mark_safe后就不会转义</span>
        <span class="hljs-keyword">return</span> mark_safe(<span class="hljs-string">"&lt;a href='http://www.baidu.com'&gt;跳转&lt;/a&gt;"</span>)
    go_to.short_description = <span class="hljs-string">"跳转"</span>

admin.py

代码语言：javascript复制
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">GradeAdmin</span><span class="hljs-params">(object)</span>:</span>
    list_display = [<span class="hljs-string">'go_to'</span>]
python django

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