stark组件之delete按钮、filter过滤

• 1、构建批量删除按钮
• 2、filter过滤
• 3、总结+coding代码

1、构建批量删除按钮

1、admin中每个页面默认都有

2、stark之构建批量删除

3、coding

{% extends 'base.html' %}

{% block title %}
    <title>list页面</title>
{% endblock %}

{% block header %}
    <h3>list页面</h3>
{% endblock %}
{% block content %}
    <a class="btn btn-primary" href="{{ add_url }}">添加数据</a>

    {% if show_list.config.search_fields %}
        <form action="" method="get">
            <input type="text" class="form-control" style="width: 30%;display: inline-block;margin-top: 8px" name="q" value="{{ show_list.config.key_word }}">
            <button class="btn btn-success">submit</button>
        </form>
    {% endif %}

    <form action="" method="post">
        {% csrf_token %}
        <select name="action" class="form-control" style="display: inline-block;width: 200px;margin: 8px 8px 8px 0;height: 35px;vertical-align: -2px">
            <option value="">-------</option>
            {% for item in show_list.get_action_list %}
                <option value="{{ item.name }}">{{ item.desc }}</option>
            {% endfor %}
        </select>
        <button type="submit" class="btn btn-primary">Go</button>

        <table class="table table-bordered table-striped">
            <tr>
                {% for header in show_list.get_header %}
                    {#            {% for header in header_list %}#}
                    <th>{{ header }}</th>
                {% endfor %}
            </tr>

            {% for data in show_list.get_body %}
                {#        {% for data in new_data_list %}#}
                <tr>
                    {% for item in data %}
                        <td>{{ item }}</td>
                    {% endfor %}

                </tr>
            {% endfor %}
        </table>
    </form>

    <nav>
        <ul class="pagination">
            {{ show_list.pagination.page_html|safe }}
        </ul>
    </nav>

{% endblock %}

{% block javascript %}
    <script type="text/javascript">
        $('#choice').click(function () {
            if ($(this).prop('checked')) {   //对象自身属性中是否具有指定的属性
                $('.choice_item').prop("checked", true)
            } else {
                $('.choice_item').prop("checked", false)
            }
        })
    </script>
{% endblock %}

list_view.html

from django.shortcuts import HttpResponse
from stark.service import stark
from .models import *
from django.forms import ModelForm

class AuthorConfig(stark.ModelStark):
    list_display = ['nid', 'name', 'age']
    list_display_links = ['name','age']

class BookModelForm(ModelForm):
    class Meta:
        model = Book
        fields = "__all__"

        labels = {
            "authors":"作者",
            "publishDate":"出版日期",
        }

class BookConfig(stark.ModelStark):
    list_display = ['nid', 'title', 'price']
    modelform_class = BookModelForm
    search_fields = ['title','price']

    # 批量修改数据
    def patch_init(self,request,queryset):
        queryset.update(price=111)

        # return HttpResponse("批量初始化OK")

    patch_init.short_description = "批量初始化"

    actions = [patch_init]

stark.site.register(Book,BookConfig)
stark.site.register(Publish)
stark.site.register(Author,AuthorConfig)
stark.site.register(AuthorDetail)

print(stark.site._registry)

"""
{<class 'app01.models.Book'>: <stark.service.stark.ModelStark object at 0x0000003AA7439630>,
<class 'app01.models.Publish'>: <stark.service.stark.ModelStark object at 0x0000003AA7439668>,
<class 'app01.models.Author'>: <stark.service.stark.ModelStark object at 0x0000003AA74396A0>,
<class 'app01.models.AuthorDetail'>: <stark.service.stark.ModelStark object at 0x0000003AA7439940>}
"""

starkadmin

# -*- coding: utf-8 -*-
# @Time    : 2018/08/17 0017 14:46
# @Author  : Venicid
from django.conf.urls import url
from django.shortcuts import HttpResponse,render,redirect

from django.utils.safestring import mark_safe
from django.urls import reverse

from stark.utils.page import Pagination
class ShowList(object):
    def __init__(self,config, data_list,request):
        self.config = config  # MOdelStark实例对象
        self.data_list = data_list      # 数据
        self.request =request

        # 分页
        data_count = self.data_list.count()
        current_page = int(self.request.GET.get('page',1))
        base_path = self.request.path
        self.pagination = Pagination(current_page,data_count,base_path,self.request.GET,per_page_num=10, pager_count=11,)

        # 分页后的数据
        self.page_data = self.data_list[self.pagination.start:self.pagination.end]

        # actions 批量初始化，字段
        # self.actions = self.config.actions # [patch_init]
        self.actions = self.config.new_actions() # [pathch_delete,patch_init,]
        # 构建数据[{'name':'path_init',"desc":'xxxxx'}]

    def get_action_list(self):
        """action批量初始化，构架数据"""
        temp = []
        for action in self.actions:
            temp.append(
                {'name':action.__name__,                # class的类名
                 "desc":action.short_description        # class的属性
                 }
            )
        return temp

    def get_header(self):
        # 构建表头
        header_list = []  # # header_list = ['选择'，'pk',...'操作','操作']
        for field in self.config.new_list_play():
            if callable(field):
                # header_list.append(field.__name__)
                val = field(self.config, header=True)
                header_list.append(val)
            else:
                if field == "__str__":
                    header_list.append(self.config.model._meta.model_name.upper())
                else:
                    val = self.config.model._meta.get_field(field).verbose_name    # 中文名称
                    header_list.append(val)

        return header_list

    def get_body(self):
        # 构建表单
        new_data_list = []
        for obj in self.page_data:    #分页后的数据               # Book表模型，Author表模型
            temp = []
            for field in self.config.new_list_play():     # ['name','age']
                if callable(field):                 # edit()  可调用的
                    print(obj,99999999999999999)
                    val = field(self.config,obj)           # 直接调用edit()函数
                    print('val--------->',val)
                else:
                    val = getattr(obj,field)       # 反射  obj是实例对象，name是方法

                    # list_display_links 按钮
                    if field in self.config.list_display_links:
                        model_name = self.config.model._meta.model_name
                        app_label = self.config.model._meta.app_label
                        _url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk,))
                        # print(_url)
                        val = mark_safe("<a href='%s'>%s</a>"%(_url,field))

                temp.append(val)

            new_data_list.append(temp)

        print('new_data_list',new_data_list)        # 构造数据  [['jack', 44], ['mark', 33]]

        return new_data_list

class ModelStark(object):
    list_display = ["__str__"]  # 子类中没有，直接用父类自己的
    list_display_links = []
    modelform_class = []
    search_fields = []  # 模糊查询字段
    actions = []

    # 批量删除
    def patch_delete(self,request,queryset):
        queryset.delete()

    patch_delete.short_description = "Delete selected "

    def __init__(self,model, site):
        self.model = model
        self.site = site

    # 增删改查url
    def get_add_url(self):
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label
        _url = reverse("%s_%s_add" %(app_label,model_name))
        return _url

    def get_list_url(self):
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label
        _url = reverse("%s_%s_list" %(app_label,model_name))
        return _url

    # 复选框，编辑，删除
    def checkbox(self,obj=None, header=False):
        if header:
            return mark_safe("<input id='choice' type='checkbox'>")
        return mark_safe("<input class='choice_item' type='checkbox' name='selected_pk' value='%s'>"%obj.pk)

    def edit(self,obj=None, header=False):
        if header:
            return "操作"
        # 方案1：固定url
        # return mark_safe("<a href=/stark/app01/userinfo/%s/change>编辑</a>")
        # 方案2：拼接url
        # return mark_safe("<a href='%s/change'>编辑</a>")

        # 方案3：反向解析
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label
        _url = reverse("%s_%s_change"%(app_label,model_name),args=(obj.pk,))
        # print("_url",_url)
        return mark_safe("<a href='%s'>编辑</a>"%_url)

    def deletes(self,obj=None, header=False):
        if header:
            return "操作"
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label
        _url = reverse("%s_%s_delete"%(app_label,model_name),args=(obj.pk,))
        return mark_safe("<a href='%s'>删除</a>"%_url)

    # ModelForm组件渲染  list、增、删、改页面
    def get_modelform_class(self):
        """ModelForm组件"""
        if not self.modelform_class:
            from django.forms import ModelForm
            class ModelFormDemo(ModelForm):
                class Meta:
                    model = self.model
                    fields = "__all__"
            return ModelFormDemo
        else:
            return self.modelform_class

    def new_list_play(self):
        """构建 ['checkbox','pk', 'name', 'age', edit,'delete']"""
        temp = []
        temp.append(ModelStark.checkbox)
        temp.extend(self.list_display)
        if not self.list_display_links:
            temp.append(ModelStark.edit)
        temp.append(ModelStark.deletes)
        return temp

    # action = ['delete',...]
    def new_actions(self):
        temp = []
        temp.append(ModelStark.patch_delete)        # delete添加
        temp.extend(self.actions)   # 如果定义新的，就扩展到temp中
        return temp

    '''
    def list_view(self,request):
        ret1 = self.model.objects.filter(title__startswith='py')
        ret2 = self.model.objects.filter(price__in=[11,22,33,44,55])
        ret3 = self.model.objects.filter(price__range=[10,20])
        ret4 = self.model.objects.filter(title__contains='O')
        ret5 = self.model.objects.filter(title__icontains='O')
        return HttpResponse("过滤成功")
    '''

    def get_search_condition(self,request):
        """search模糊查询"""
        key_word = request.GET.get("q",'')
        self.key_word = key_word
        from django.db.models import Q   # 与或非
        search_connection = Q()
        if key_word:
            search_connection.connector = "or"
            for search_field in self.search_fields:
                search_connection.children.append((search_field+"__contains", key_word))

        return search_connection

    def list_view(self, request):
        if request.method == 'POST':
            print('post',request.POST)
            action = request.POST.get("action")                     # action': ['patch_init'],
            if action:
                selected_pk = request.POST.getlist('selected_pk')       # 'selected_pk': ['5']}>
                action_func = getattr(self,action)  # 反射查询 action       # 取出实例方法

                queryset = self.model.objects.filter(pk__in=selected_pk)        # 查询
                ret = action_func(request,queryset)    # 执行action()     # 执行实例方法()
                # return ret

        # 获取search的Q对象
        search_connection = self.get_search_condition(request)

        # 筛选获取当前表所有数据
        data_list = self.model.objects.all().filter(search_connection)

        #按照showlist展示页面， 构建表头，表单
        show_list = ShowList(self,data_list,request)  # self=ModelSTark实例对象

        # 构建一个查看addurl
        add_url = self.get_add_url()
        return render(request,'list_view.html', locals())

    def add_view(self, request):
        ModelFormDemo=self.get_modelform_class()
        form = ModelFormDemo()
        if request.method == "POST":
            form = ModelFormDemo(request.POST)
            if form.is_valid():
                form.save()
                return redirect(self.get_list_url())

        return render(request, "add_view.html",locals())

    def delete_view(self, request, id):
        url = self.get_list_url()
        if request.method == "POST":
            self.model.objects.filter(pk=id).delete()
            return redirect(url)
        return render(request, "delete_view.html", locals())

    def change_view(self, request, id):
        edit_obj = self.model.objects.filter(pk=id).first()

        ModelFormDemo=self.get_modelform_class()
        form = ModelFormDemo(instance=edit_obj)
        if request.method == "POST":
            form = ModelFormDemo(request.POST,instance=edit_obj)
            if form.is_valid():
                form.save()
                return redirect(self.get_list_url())

        return render(request, "change_view.html",locals())

    #构造 add/delete/change
    def get_urls2(self):
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label

        temp = []
        temp.append(url(r'^$', self.list_view, name='%s_%s_list'%(app_label,model_name)))
        temp.append(url(r'^add/', self.add_view, name='%s_%s_add'%(app_label,model_name)))
        temp.append(url(r'^(\d+)/delete/', self.delete_view, name='%s_%s_delete'%(app_label,model_name)))
        temp.append(url(r'^(\d+)/change/', self.change_view, name='%s_%s_change'%(app_label,model_name)))

        return temp

    @property
    def urls2(self):

        return self.get_urls2(), None, None

class StarkSite(object):
    """site单例类"""
    def __init__(self):
        self._registry = {}

    def register(self,model, stark_class=None):
        """注册"""
        if not stark_class:
            stark_class = ModelStark

        self._registry[model] = stark_class(model,self)

    def get_urls(self):
        """构造一层urls app01/book"""
        temp = []
        for model, stark_class_obj in self._registry.items():
            print(model, 'stark_clas_obj', stark_class_obj)  # 不同的model模型表
            """
             <class 'app01.models.UserInfo'> ----> <app01.starkadmin.UserConfig object at 0x00000072DDB65198>
             <class 'app01.models.Book'> ----> <stark.service.stark.ModelStark object at 0x00000072DDB65240>
             """

            app_label = model._meta.app_label     # app01
            model_name = model._meta.model_name   # book
            # temp.append(url(r'^%s/%s'%(app_label, model_name),([],None,None)))
            temp.append(url(r'^%s/%s/'%(app_label, model_name),stark_class_obj.urls2))
            """
               path('app01/userinfo/',UserConfig(Userinfo,site).urls2),
               path('app01/book/',ModelStark(Book,site).urls2),
            """

        return temp

    @property
    def urls(self):

        # return [],None,None
        return self.get_urls(),None,None

site = StarkSite()   # 单例对象

stark/service/stark.py

2、filter过滤

1、admin之过滤

2、多对多字段：data_list = filter_field_obj.remote_field.model.objects.all()

1.封装好一个Q对象

    # 得到过滤的字段，封装成一个"和"关系的Q对象返回。
    def get_filter_condition(self,request):
        from django.db.models import Q
        filter_condition=Q()
        for filter_field,val in request.GET.items():
            if filter_field in self.list_filter:
                filter_condition.children.append((filter_field,val))
        return filter_condition

2.调用函数，传入request，然后加一个filter条件就可以了。

3、页面生成表单数据：多对多

4、filter过滤字段

5、filter字段的href动态变化

6、加入普通字段的过滤字段

7、list_view视图获取数据

8、html模板层

3、总结+coding代码

1、总结

1.配置得显示Filter,不配置就不显示了

  list_filter = ['title','publish', 'authors']

2.前端显示

  后端返回 字典
    eg:{"publish":["<a href=''>全部</a>","<a href=''>南京出版社</a>","<a href=''>上海出版社</a>"]
        "authors":["<a href=''>全部</a>"，"<a href=''>yuan</a>","<a href=''>egon</a>"]
        }

    {% if showlist.config.list_filter %}
        <h4>Filter</h4>
        {% for filter_field, linktags in showlist.get_filter_linktags.items %}
            <div class="well">
                <p>{{ filter_field.upper }}</p>
                {% for link in linktags %}
                    <p>{{ link|safe }}</p>
                {% endfor %}

            </div>
        {% endfor %}
    {% endif %}

3.get_filter_linktags 返回 字典
    知识：
    1.根据字段 str 取到模型得字段对象

        filter_field_obj = self.config.model._meta.get_field(filter_field)
        model_name = self.config.model._meta.model_name  # 模型名 book
        app_label = self.config.model._meta.app_label    # app名 app01

    2.一对多，多对多，

   #就是 ForeignKey ManyToManyField 得对象
        app01.Book.publish
        <class 'django.db.models.fields.related.ForeignKey'>
        app01.Book.authors
        <class 'django.db.models.fields.related.ManyToManyField'>

    3.根据一对多，多对多得对象 找关联得模型表，数据

 print("rel...", filter_field_obj.rel.to.objects.all())
　　　　data_list = filter_field_obj.remote_field.model.objects.all()
        rel... <QuerySet [<Publish: 南京出版社>, <Publish: 上海出版社>, <Publish: 河北出版社>]>
        rel... <QuerySet [<Author: yuan>, <Author: egon>, <Author: alex>]>

    4.取数据，普通字段，和关联字段分开取

 if isinstance(filter_field_obj, ForeignKey) or isinstance(filter_field_obj, ManyToManyField):
            data_list = filter_field_obj.rel.to.objects.all()  # 关联对象 适用 一对多，多对多
        else: # 普通字段
            data_list = self.config.model.objects.all().values('pk', filter_field)

    5.处理全部标签时

注意：url 上面已经有了该field, 全部,就取消该field, del params[filter_field]
             url 上面没有，那就没有
        temp = []
        if params.get(filter_field):
            del params[filter_field]
            temp.append("<a href='?%s'>全部</a>" % (params.urlencode()))
        else:
            temp.append("<a href='#' class='active'>全部</a>")

    6.处理数据标签       

　　　　注意：分开处理关联字段和普通字段
            params = copy.deepcopy(self.request.GET)
            为url加一个params
            params[filter_field] = pk
            params[filter_field] = text

        每一次取数据都要保留 正在访问得 url 并加上正在访问得field！

            _url = params.urlencode()
            link_tag = "<a href='?%s'>%s</a>" % (_url, text)

        正在点击得,得加上样式 active
            if cid == str(pk) or cid == text:
                link_tag = "<a class='active' href='?%s'>%s</a>" % (_url, text)
            else:
                link_tag = "<a href='?%s'>%s</a>" % (_url, text)

7、获取页面的url中的filter字段，后面进行del，active样式

def get_filter_linktags(self):
    link_dic = {}
    for filter_field in self.config.list_filter:        # ['title','publish','authors']
        # 1.获取url中的相关字段，后面比较
        current_id = self.request.GET.get(filter_field,0)
        pararms = copy.deepcopy(self.request.GET)

4.Q查询 and

 def list_view(self, request):
        ...
        ...
        # 获取filter得Q对象
        filter_condition = self.get_filter_condition(request)

        # 筛选当前表得所有数据
        data_list = self.model.objects.all().filter(search_connection).filter(filter_condition)
        ...
        ...

    #  Q对象
    def get_filter_condition(self, request):
        filter_condition = Q()   # 默认是 and 不是 or, 根据str,查找val
        for filter_field, val in request.GET.items():
            if filter_field in self.list_filter:
                filter_condition.children.append((filter_field, val))

        return filter_condition

    补充：
    Q查询根据字段

  bookList=Book.objects.filter(Q(authors__name="yuan")|Q(authors__name="egon"))

    Q查询根据str

        filter_condition = Q()
        filter_consition.connector = "or"   # 如果不写默认是 and
        filter_condition.children.append(("title","yuan"))
        filter_condition.children.append(("date","2018-12-12"))

        Book.object.filter(filter_condition)

2、starkadmin.py

from django.shortcuts import HttpResponse
from stark.service import stark
from .models import *
from django.forms import ModelForm

class AuthorConfig(stark.ModelStark):
    list_display = ['nid', 'name', 'age']
    list_display_links = ['name','age']

class BookModelForm(ModelForm):
    class Meta:
        model = Book
        fields = "__all__"

        labels = {
            "authors":"作者",
            "publishDate":"出版日期",
        }

class BookConfig(stark.ModelStark):
    list_display = ['title', 'price','publish','authors']
    list_display_links = ['title']
    modelform_class = BookModelForm
    search_fields = ['title','price']
    list_filter = ['title','publish','authors']  # 一对多，多对多字段

    # 批量修改数据
    def patch_init(self,request,queryset):
        queryset.update(price=111)

        # return HttpResponse("批量初始化OK")

    patch_init.short_description = "批量初始化"

    actions = [patch_init]

stark.site.register(Book,BookConfig)
stark.site.register(Publish)
stark.site.register(Author,AuthorConfig)
stark.site.register(AuthorDetail)

# print(stark.site._registry)

3、stark/service/stark.py

# -*- coding: utf-8 -*-
# @Time    : 2018/08/17 0017 14:46
# @Author  : Venicid
from django.conf.urls import url
from django.shortcuts import HttpResponse,render,redirect

from django.utils.safestring import mark_safe
from django.urls import reverse
from django.db.models import Q  # 与或非
from django.db.models.fields.related import ForeignKey
from django.db.models.fields.related import ManyToManyField
import copy

from stark.utils.page import Pagination
class ShowList(object):
    def __init__(self,config, data_list,request):
        self.config = config  # MOdelStark实例对象
        self.data_list = data_list      # 数据
        self.request =request

        # 分页
        data_count = self.data_list.count()
        current_page = int(self.request.GET.get('page',1))
        base_path = self.request.path
        self.pagination = Pagination(current_page,data_count,base_path,self.request.GET,per_page_num=10, pager_count=11,)

        # 分页后的数据
        self.page_data = self.data_list[self.pagination.start:self.pagination.end]

        # actions 批量初始化，字段
        # self.actions = self.config.actions # [patch_init]
        self.actions = self.config.new_actions() # [pathch_delete,patch_init,]
        # 构建数据[{'name':'path_init',"desc":'xxxxx'}]

    # filter的tag如何生成的
    def get_filter_linktags(self):
        link_dic = {}
        for filter_field in self.config.list_filter:        # ['title','publish','authors']
            # 1.获取url中的相关字段，后面比较
            current_id = self.request.GET.get(filter_field,0)
            pararms = copy.deepcopy(self.request.GET)

            # 2 页面生成  各种字段
            filter_field_obj = self.config.model._meta.get_field(filter_field)
            print(filter_field_obj,type(filter_field_obj))
            # app01.Book.publish  < class 'django.db.models.fields.related.ForeignKey'>
            # app01.Book.authors < class 'django.db.models.fields.related.ManyToManyField'>

            # print('rel...',filter_field_obj.re)     # <ManyToOneRel: app01.book>
            # print('rel...',filter_field_obj.re.to.objects.all())  # <QuerySet [<Publish: 南京出版社>, <Publish: 北京出版社>]>

            # 解决步骤
            # print('rel...',filter_field_obj.__dict__)
            # print('rel...',filter_field_obj.remote_field)
            # print('rel...',filter_field_obj.remote_field.__dict__)
            # print("rel...", filter_field_obj.remote_field.model.objects.all())
            # <QuerySet [<Publish: 南京出版社>, <Publish: 北京出版社>]>
            # <QuerySet [<Author: jack>, <Author: tom>]>

            # 一对一字段or一对多字段
            if isinstance(filter_field_obj,ForeignKey) or isinstance(filter_field_obj,ManyToManyField):
                data_list = filter_field_obj.remote_field.model.objects.all()
            else:
                # 普通字段
                data_list = self.config.model.objects.all().values('pk',filter_field)

            # 3、 生成标签的href
            temp = []
            if pararms.get(filter_field):
                del pararms[filter_field]
                temp.append("<a href='?%s'>全部</a>"%pararms.urlencode())
            else:
                temp.append("<a href='#' class='active'>全部</a>")

            # 处理filter字段的href
            for obj in data_list:
                # print(data_list)
                # 一对一，一对多字段
                if isinstance(filter_field_obj, ForeignKey) or isinstance(filter_field_obj, ManyToManyField):
                    pk = obj.pk
                    text = str(obj)
                    pararms[filter_field] = pk
                else:
                    # 普通字段
                    pk = obj.get('pk')
                    text = obj.get(filter_field)
                    pararms[filter_field] = text

                _url = pararms.urlencode()
                # print(type(current_id),type(pk),type(text))
                if str(current_id) == str(pk) or str(current_id) ==str(text):
                    link_tag = "<a href='?%s' class='active'>%s</a>"%(_url,text)
                else:
                    link_tag = "<a href='?%s'>%s</a>"%(_url,text)
                temp.append(link_tag)
            link_dic[filter_field] = temp

        return link_dic

    def get_action_list(self):
        """action批量初始化，构架数据"""
        temp = []
        for action in self.actions:
            temp.append(
                {'name':action.__name__,                # class的类名
                 "desc":action.short_description        # class的属性
                 }
            )
        return temp

    def get_header(self):
        # 构建表头
        header_list = []  # # header_list = ['选择'，'pk',...'操作','操作']
        for field in self.config.new_list_play():
            if callable(field):
                # header_list.append(field.__name__)
                val = field(self.config, header=True)
                header_list.append(val)
            else:
                if field == "__str__":
                    header_list.append(self.config.model._meta.model_name.upper())
                else:
                    val = self.config.model._meta.get_field(field).verbose_name    # 中文名称
                    header_list.append(val)

        return header_list

    def get_body(self):
        # 构建表单
        new_data_list = []
        for obj in self.page_data:    #分页后的数据               # Book表模型，Author表模型
            temp = []
            for field in self.config.new_list_play():     # ['name','age']
                if callable(field):                 # edit()  可调用的
                    # print(obj,99999999999999999)
                    val = field(self.config,obj)           # 直接调用edit()函数
                    # print('val--------->',val)
                else:
                    from django.db.models.fields.related import ManyToManyField
                    field_obj = self.config.model._meta.get_field(field)
                    if isinstance(field_obj,ManyToManyField):
                        ret = getattr(obj,field).all()       # 反射  obj是实例对象，name是方法
                        t = []
                        for obj in ret:
                            t.append(str(obj))
                        val = ','.join(t)

                    else:
                        val = getattr(obj, field)
                        # list_display_links 按钮
                        if field in self.config.list_display_links:
                            model_name = self.config.model._meta.model_name
                            app_label = self.config.model._meta.app_label
                            _url = reverse("%s_%s_change" % (app_label, model_name), args=(obj.pk,))
                            # print(_url)
                            val = mark_safe("<a href='%s'>%s</a>"%(_url,val))

                temp.append(val)

            new_data_list.append(temp)

        # print('new_data_list',new_data_list)        # 构造数据  [['jack', 44], ['mark', 33]]

        return new_data_list

class ModelStark(object):
    list_display = ["__str__"]  # 子类中没有，直接用父类自己的
    list_display_links = []
    modelform_class = []
    search_fields = []  # 模糊查询字段
    actions = []
    list_filter = []        # 过滤字段

    # 批量删除
    def patch_delete(self,request,queryset):
        queryset.delete()

    patch_delete.short_description = "Delete selected "

    def __init__(self,model, site):
        self.model = model
        self.site = site

    # 增删改查url
    def get_add_url(self):
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label
        _url = reverse("%s_%s_add" %(app_label,model_name))
        return _url

    def get_list_url(self):
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label
        _url = reverse("%s_%s_list" %(app_label,model_name))
        return _url

    # 复选框，编辑，删除
    def checkbox(self,obj=None, header=False):
        if header:
            return mark_safe("<input id='choice' type='checkbox'>")
        return mark_safe("<input class='choice_item' type='checkbox' name='selected_pk' value='%s'>"%obj.pk)

    def edit(self,obj=None, header=False):
        if header:
            return "操作"
        # 方案1：固定url
        # return mark_safe("<a href=/stark/app01/userinfo/%s/change>编辑</a>")
        # 方案2：拼接url
        # return mark_safe("<a href='%s/change'>编辑</a>")

        # 方案3：反向解析
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label
        _url = reverse("%s_%s_change"%(app_label,model_name),args=(obj.pk,))
        # print("_url",_url)
        return mark_safe("<a href='%s'>编辑</a>"%_url)

    def deletes(self,obj=None, header=False):
        if header:
            return "操作"
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label
        _url = reverse("%s_%s_delete"%(app_label,model_name),args=(obj.pk,))
        return mark_safe("<a href='%s'>删除</a>"%_url)

    # ModelForm组件渲染  list、增、删、改页面
    def get_modelform_class(self):
        """ModelForm组件"""
        if not self.modelform_class:
            from django.forms import ModelForm
            class ModelFormDemo(ModelForm):
                class Meta:
                    model = self.model
                    fields = "__all__"
            return ModelFormDemo
        else:
            return self.modelform_class

    def new_list_play(self):
        """构建 ['checkbox','pk', 'name', 'age', edit,'delete']"""
        temp = []
        temp.append(ModelStark.checkbox)
        temp.extend(self.list_display)
        if not self.list_display_links:
            temp.append(ModelStark.edit)
        temp.append(ModelStark.deletes)
        return temp

    # action = ['delete',...]
    def new_actions(self):
        temp = []
        temp.append(ModelStark.patch_delete)        # delete添加
        temp.extend(self.actions)   # 如果定义新的，就扩展到temp中
        return temp

    '''
    def list_view(self,request):
        ret1 = self.model.objects.filter(title__startswith='py')
        ret2 = self.model.objects.filter(price__in=[11,22,33,44,55])
        ret3 = self.model.objects.filter(price__range=[10,20])
        ret4 = self.model.objects.filter(title__contains='O')
        ret5 = self.model.objects.filter(title__icontains='O')
        return HttpResponse("过滤成功")
    '''

    def get_search_condition(self,request):
        """search模糊查询"""
        key_word = request.GET.get("q",'')
        self.key_word = key_word

        search_connection = Q()
        if key_word:
            search_connection.connector = "or"
            for search_field in self.search_fields:
                search_connection.children.append((search_field+"__contains", key_word))

        return search_connection

    def get_filter_condition(self,request):
        """filter过滤处理"""
        filter_condition = Q()      # 并且
        for filter_field,val in request.GET.items():
            if filter_field in self.list_filter:        # list_filter = ['publish','authors']
                filter_condition.children.append((filter_field,val))
        return filter_condition

    def list_view(self, request):
        if request.method == 'POST':
            # print('post',request.POST)
            action = request.POST.get("action")                     # action': ['patch_init'],
            if action:
                selected_pk = request.POST.getlist('selected_pk')       # 'selected_pk': ['5']}>
                action_func = getattr(self,action)  # 反射查询 action       # 取出实例方法

                queryset = self.model.objects.filter(pk__in=selected_pk)        # 查询
                ret = action_func(request,queryset)    # 执行action()     # 执行实例方法()
                # return ret

        # 获取search的Q对象
        search_connection = self.get_search_condition(request)

        # 获取filter构建Q对象
        filter_condition = self.get_filter_condition(request)

        # 筛选获取当前表所有数据
        # data_list = self.model.objects.all().filter(search_connection)
        data_list = self.model.objects.all().filter(search_connection).filter(filter_condition)

        #按照showlist展示页面， 构建表头，表单
        show_list = ShowList(self,data_list,request)  # self=ModelSTark实例对象

        # 构建一个查看addurl
        add_url = self.get_add_url()
        return render(request,'list_view.html', locals())

    def add_view(self, request):
        ModelFormDemo=self.get_modelform_class()
        form = ModelFormDemo()
        if request.method == "POST":
            form = ModelFormDemo(request.POST)
            if form.is_valid():
                form.save()
                return redirect(self.get_list_url())

        return render(request, "add_view.html",locals())

    def delete_view(self, request, id):
        url = self.get_list_url()
        if request.method == "POST":
            self.model.objects.filter(pk=id).delete()
            return redirect(url)
        return render(request, "delete_view.html", locals())

    def change_view(self, request, id):
        edit_obj = self.model.objects.filter(pk=id).first()

        ModelFormDemo=self.get_modelform_class()
        form = ModelFormDemo(instance=edit_obj)
        if request.method == "POST":
            form = ModelFormDemo(request.POST,instance=edit_obj)
            if form.is_valid():
                form.save()
                return redirect(self.get_list_url())

        return render(request, "change_view.html",locals())

    #构造 add/delete/change
    def get_urls2(self):
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label

        temp = []
        temp.append(url(r'^$', self.list_view, name='%s_%s_list'%(app_label,model_name)))
        temp.append(url(r'^add/', self.add_view, name='%s_%s_add'%(app_label,model_name)))
        temp.append(url(r'^(\d+)/delete/', self.delete_view, name='%s_%s_delete'%(app_label,model_name)))
        temp.append(url(r'^(\d+)/change/', self.change_view, name='%s_%s_change'%(app_label,model_name)))

        return temp

    @property
    def urls2(self):

        return self.get_urls2(), None, None

class StarkSite(object):
    """site单例类"""
    def __init__(self):
        self._registry = {}

    def register(self,model, stark_class=None):
        """注册"""
        if not stark_class:
            stark_class = ModelStark

        self._registry[model] = stark_class(model,self)

    def get_urls(self):
        """构造一层urls app01/book"""
        temp = []
        for model, stark_class_obj in self._registry.items():
            # print(model, 'stark_clas_obj', stark_class_obj)  # 不同的model模型表
            """
             <class 'app01.models.UserInfo'> ----> <app01.starkadmin.UserConfig object at 0x00000072DDB65198>
             <class 'app01.models.Book'> ----> <stark.service.stark.ModelStark object at 0x00000072DDB65240>
             """

            app_label = model._meta.app_label     # app01
            model_name = model._meta.model_name   # book
            # temp.append(url(r'^%s/%s'%(app_label, model_name),([],None,None)))
            temp.append(url(r'^%s/%s/'%(app_label, model_name),stark_class_obj.urls2))
            """
               path('app01/userinfo/',UserConfig(Userinfo,site).urls2),
               path('app01/book/',ModelStark(Book,site).urls2),
            """

        return temp

    @property
    def urls(self):

        # return [],None,None
        return self.get_urls(),None,None

site = StarkSite()   # 单例对象

4、list_view.html

{% extends 'base.html' %}

{% block title %}
    <title>list页面</title>
{% endblock %}

{% block css %}
    <style type="text/css">
        .active {
            color: red !important;
        }

        .filter a {
            text-decoration: none;
            color: grey;
        }
    </style>
{% endblock %}
{% block content %}
    <div class="col-md-9">

        <a class="btn btn-primary" href="{{ add_url }}">添加数据</a>

        {% if show_list.config.search_fields %}
            <form action="" method="get">
                <input type="text" class="form-control" style="width: 30%;display: inline-block;margin-top: 8px"
                       name="q"
                       value="{{ show_list.config.key_word }}">
                <button class="btn btn-success">submit</button>
            </form>
        {% endif %}

        <form action="" method="post">
            {% csrf_token %}
            <select name="action" class="form-control"
                    style="display: inline-block;width: 200px;margin: 8px 8px 8px 0;height: 35px;vertical-align: -2px">
                <option value="">-------</option>
                {% for item in show_list.get_action_list %}
                    <option value="{{ item.name }}">{{ item.desc }}</option>
                {% endfor %}
            </select>
            <button type="submit" class="btn btn-primary">Go</button>

            <table class="table table-bordered table-striped">
                <tr>
                    {% for header in show_list.get_header %}
                        {#            {% for header in header_list %}#}
                        <th>{{ header }}</th>
                    {% endfor %}
                </tr>

                {% for data in show_list.get_body %}
                    {#        {% for data in new_data_list %}#}
                    <tr>
                        {% for item in data %}
                            <td>{{ item }}</td>
                        {% endfor %}

                    </tr>
                {% endfor %}
            </table>
        </form>

        <nav>
            <ul class="pagination">
                {{ show_list.pagination.page_html|safe }}
            </ul>
        </nav>
    </div>
    <div class="col-md-3">
        <div class="filter">
            {% for filter_field, linktags in show_list.get_filter_linktags.items %}

                <div class="well">
                    <p>{{ filter_field.upper }}</p>

                    {% for link in linktags %}
                        <p>{{ link|safe }}</p>
                    {% endfor %}

                </div>

            {% endfor %}

        </div>
    </div>
{% endblock %}

{% block javascript %}
    <script type="text/javascript">
        $('#choice').click(function () {
            if ($(this).prop('checked')) {   //对象自身属性中是否具有指定的属性
                $('.choice_item').prop("checked", true)
            } else {
                $('.choice_item').prop("checked", false)
            }
        })
    </script>
{% endblock %}