10.20stark组件已经完工

2018-10-20 19:37:31

stark组件已经做完!基本上和Django的admin一样!

放上github连接:https://github.com/TrueNewBee/pythonDemo/blob/master/stark_demo.rar

放上正版的stark组件: https://github.com/TrueNewBee/pythonDemo/blob/master/stark.zip

stark组件已经完成,明天整理Django博客!

后面的就是crm项目啦!

越努力,与幸运!永远不要高估自己!

知识点  test.py

子类继承父类 , 然后和父类的类型一样 isinstance()

modelForm 把  model.Model 转换成 form.Form

ChoiceFiled
ModelChoiceFiled（ChoiceFiled） ---- select(单选)
MultiModelChoiceFiled （ModelChoiceFiled）----select(多选)

class Book(model.Model):
    title = models.CharField(max_length=32)
    price = models.IntegerField()
    publish=model.Foreignkey("Publish")
    authors=model.ManyToMany("Author")

from django.forms import ModelForm
class BookForm(ModelForm):
    class Meta:
        model=Book
        fields="__all__"

from django import forms
class BookForm(forms.Form):
    title=forms.CharField(max_length=32)
    price=forms.IntegerField()
    publish = forms.ModelChoiceFiled("Publish")
    authors = forms.ModelMultipleChoiceField("Author")

form=BookForm()

for i in form:
    if isinstance(i,ModelChoiceFiled):
        pass 

‘‘‘

pop功能：

1 如何在一对多和多对多字段后渲染 +

2 +对应的跳转路径

上述两步实现逻辑

def add_view(self, request):
    # 实例化form类对象
    ModelFormDemo = self.get_modelform_class()
    form = ModelFormDemo()
    for bfield in form:
        # 这个可以看源码,然后类调用所需属性
        from django.forms.boundfield import BoundField
        print(bfield.field)             # 字段对象
        print("name",bfield.name)       # 字段名（字符串）
        print(type(bfield.field))       # 字段类型
        # 看源码可得 多对多和一对多是ModelChoiceFiled的类型
        from django.forms.models import ModelChoiceField
        if isinstance(bfield.field, ModelChoiceField):
            # 增加一个属性,传给前端做判断,是否显示这个 +按钮
            bfield.is_pop = True
            print("=======>", bfield.field.queryset.model) # 一对多或者多对多字段的关联模型表
            # 通过下面两个方法,找到表和app名字
            related_model_name = bfield.field.queryset.model._meta.model_name
            related_app_label = bfield.field.queryset.model._meta.app_label
            # 拼接url传给前端
            _url = reverse("%s_%s_add" % (related_app_label, related_model_name))
            # 创建一个新的属性url 给前端调用
            bfield.url = _url+"?pop_res_id=id_%s" % bfield.name

上面是get请求,下面是这个函数post请求的逻辑

# POST请求
        if request.method == "POST":
            form = ModelFormDemo(request.POST)
            if form.is_valid():
                obj = form.save()       # 保存数据,并返回一个obj
                pop_res_id = request.GET.get("pop_res_id")
                # 判断是点击+按钮带参数访问,还是通过add页面直接访问的
                if pop_res_id:
                    res = {"pk": obj.pk, "text": str(obj), "pop_res_id": pop_res_id}
                    return render(request, "pop.html", {"res": res})
                else:
                    return redirect(self.get_list_url())
        return render(request, "add_view.html", locals())

3 保存添加记录同时，将原页面的对应的下拉菜单中添加该记录
通过js方法!

from.html

<script>
    // 打开一个新的窗口添加数据
    function pop(url) {
        window.open(url,"","width=600,height=400,top=100,left=100")
    }
</script>

pop.html  (作用就是一个桥梁,传给父类页面相应参数,然后关闭)

<script>
    // 调用父类的方法,并把相应参数传给父类
    window.opener.pop_response(‘{{ res.pk }}‘,"{{ res.text }}",‘{{ res.pop_res_id }}‘)
    // 传过去后直接关闭页面,由于响应很快,时间可以忽略
    window.close()
</script>

add.html(接受子页面传入的参数,然后通过jQuery方法把传入的数据直接添加到select框中默认选中)

<script>
   function pop_response (pk,text,id) {

       console.log(pk,text,id);
        // 接受子页面传入的参数,并通过jQuery,添加相应的标签和值
        // 选择哪一个select标签
        // option的文本值和value值

       var $option=$(‘<option>‘);  //  <option></option>
       $option.html(text); //  <option>南京出版社</option>
       $option.val(pk);     //  <option value=111>南京出版社</option>
       $option.attr("selected","selected") ;   //  <option value=111>南京出版社</option>
       $("#"+id).append($option)

   }
</script>

然后附上这个stark组件的主要代码!主要看逻辑实现!!想看源码就去github下一下!源码里面都注释好啦!!!!!

stark/stark.py

from django.conf.urls import url
from django.shortcuts import render, redirect
from django.urls import reverse
from django.utils.safestring import mark_safe
from django.forms import ModelForm
from stark.utils.page import Pagination
from django.db.models import Q
from django.db.models.fields.related import ForeignKey
from django.db.models.fields.related import ManyToManyField
import copy

"""Stark组件!2018-10-20 19:39:08功能简介:        1. 使用方法和Django的admin一样,需要在strak里面注册,详情看app01/stark.py        2. 实现了对不同表的url的各级分发        3. 用户可以自定义配置表的现实信息 详情可以看app01/stark.py        4. 实现了对表添加数据pop的功能!        5. 最强大就是,你可以拿去直接用,和admin一样,而且不需要超级用户!        2333333333333333333333333333333"""

class ShowList(object):
    # 这是一个配置类的对象初始化
    def __init__(self, config, data_list, request):
        self.config = config
        self.data_list = data_list
        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=3, pager_count=11,)
        self.page_data = self.data_list[self.pagination.start:self.pagination.end]
        # actions   获取actions这个配置类的列表
        self.actions = self.config.actions  # [patch_init,]

    # 处理filter字段连接
    def get_filter_linktags(self):
        """用了两次for循环,在算法上有点缀余!不过可以用类或函数封装只是懒-.-能力欠缺!"""
        print("list_filter:", self.config.list_filter)
        link_dic = {}
        for filter_field in self.config.list_filter:  # ["title","publish","authors",]
            params = copy.deepcopy(self.request.GET)
            cid = self.request.GET.get(filter_field, 0)
            print("filter_field", filter_field)  # "publish"
            # 通过_meta.get_field方法,获取该表名对象
            filter_field_obj = self.config.model._meta.get_field(filter_field)

            print("filter_field_obj", filter_field_obj)
            print(type(filter_field_obj))
            # print("rel...",filter_field_obj.rel.to.objects.all())

            # 判断一下 如果是多对多或一对多类型的
            if isinstance(filter_field_obj, ForeignKey) or isinstance(filter_field_obj, ManyToManyField):
                # 拿到表的所有QuerySet对象
                data_list = filter_field_obj.rel.to.objects.all()  # 【publish1,publish2...】
            else:
                # 这个则是自定义过滤字段
                data_list = self.config.model.objects.all().values("pk", filter_field)
                print("data_list", data_list)

            temp = []
            # 处理 全部标签
            if params.get(filter_field):
                # 如果url如果存在参数 则del
                del params[filter_field]
                temp.append("<a href=‘?%s‘>全部</a>" % params.urlencode())
            else:
                # 反之加上class 增加颜色
                temp.append("<a  class=‘active‘ href=‘#‘>全部</a>")

            # 处理 数据标签
            for obj in data_list:
                # 循环列表中每个QuerySet的对象然后取到相应的值
                if isinstance(filter_field_obj, ForeignKey) or isinstance(filter_field_obj, ManyToManyField):
                    pk = obj.pk
                    text = str(obj)
                    params[filter_field] = pk
                else:  # data_list= [{"pk":1,"title":"go"},....]
                    pk = obj.get("pk")
                    text = obj.get(filter_field)
                    params[filter_field] = text

                _url = params.urlencode()
                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)
                temp.append(link_tag)

            link_dic[filter_field] = temp
        return link_dic

    # 获取下拉框 用户配置的action_list
    def get_action_list(self):
        temp = []
        for action in self.actions:
            #  [{"name":""patch_init,"desc":"批量初始化"}]
           temp.append({
               "name": action.__name__,
               "desc": action.short_description
           })
        return temp

    # 构建表头
    def get_header(self):
        header_list = []
        print("header", self.config.new_list_play())
        # [checkbox,"pk","name","age",edit ,deletes]     【checkbox ,"__str__", edit ,deletes】
        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:
                    # header_list.append(field)
                    val = self.config.model._meta.get_field(field).verbose_name
                    header_list.append(val)
        return header_list

    # 构建表单数据
    def get_body(self):
        # 构建表单数据
        new_data_list = []
        for obj in self.page_data:
            temp = []
            for filed in self.config.new_list_play():  # ["__str__",]      ["pk","name","age",edit]
                if callable(filed):
                    val = filed(self.config, obj)
                else:
                    # 这里捕获一下异常,因为默认的list_play里面有__str__ 直接找不到该字段
                    # 所以直接用getattr方法就行啦!
                    try:
                        field_obj = self.config.model._meta.get_field(filed)
                        if isinstance(field_obj, ManyToManyField):
                            # getattr()仅取到Object, 然后.all() 则可以取到对象
                            ret = getattr(obj, filed).all()
                            t = []
                            for obj in ret:
                                t.append(str(obj))
                            val = ",".join(t)

                        else:
                            val = getattr(obj, filed)
                            if filed in self.config.list_display_links:
                                # "app01/userinfo/(\d+)/change"
                                _url = self.config.get_change_url(obj)
                                val = mark_safe("<a href=‘%s‘>%s</a>" % (_url, val))
                    except Exception as e:
                        val = getattr(obj, filed)
                temp.append(val)
            new_data_list.append(temp)
        return new_data_list

class ModelStark(object):
    # 默认的list_play[]
    list_display = ["__str__", ]
    list_display_links = []
    modelform_class = None
    search_fields = []
    actions = []
    list_filter = []

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

    # 默认的批量删除action
    def patch_delete(self, request, queryset):
        queryset.delete()
    patch_delete.short_description = "批量删除"

    # 配置表头: 删除 编辑，复选框
    def edit(self, obj=None, header=False):
        """编辑"""
        if header:
            return "操作"
        # return mark_safe("<a href=‘%s/change‘>编辑</a>"%obj.pk)
        _url = self.get_change_url(obj)
        return mark_safe("<a href=‘%s‘>编辑</a>" % _url)

    def deletes(self, obj=None, header=False):
        """删除"""
        if header:
            return "操作"
        # return mark_safe("<a href=‘%s/change‘>编辑</a>"%obj.pk)
        _url = self.get_delete_url(obj)
        return mark_safe("<a href=‘%s‘>删除</a>" % _url)

    def checkbox(self, obj=None, header=False):
        """复选框"""
        if header:
            return mark_safe(‘<input id="choice" type="checkbox">‘)
        # value的值不能写死,
        return mark_safe(‘<input class="choice_item" type="checkbox" name="selected_pk" value="%s">‘ % obj.pk)

    # 获取配置类的表头信息
    def get_modelform_class(self):
        """获取表的配置类"""
        if not self.modelform_class:
            # 如果表的配置类为空
            class ModelFormDemo(ModelForm):
                class Meta:
                    model = self.model
                    fields = "__all__"
                    labels = {
                        ""
                    }
            return ModelFormDemo
        else:
            return self.modelform_class

    # 添加的视图函数
    def add_view(self, request):
        # 实例化form类对象
        ModelFormDemo = self.get_modelform_class()
        form = ModelFormDemo()
        for bfield in form:
            # 这个可以看源码,然后类调用所需属性
            from django.forms.boundfield import BoundField
            print(bfield.field)             # 字段对象
            print("name",bfield.name)       # 字段名（字符串）
            print(type(bfield.field))       # 字段类型
            # 看源码可得 多对多和一对多是ModelChoiceFiled的类型
            from django.forms.models import ModelChoiceField
            if isinstance(bfield.field, ModelChoiceField):
                # 增加一个属性,传给前端做判断,是否显示这个 +按钮
                bfield.is_pop = True
                print("=======>", bfield.field.queryset.model) # 一对多或者多对多字段的关联模型表
                # 通过下面两个方法,找到表和app名字
                related_model_name = bfield.field.queryset.model._meta.model_name
                related_app_label = bfield.field.queryset.model._meta.app_label
                # 拼接url传给前端
                _url = reverse("%s_%s_add" % (related_app_label, related_model_name))
                # 创建一个新的属性url 给前端调用
                bfield.url = _url+"?pop_res_id=id_%s" % bfield.name
        # POST请求
        if request.method == "POST":
            form = ModelFormDemo(request.POST)
            if form.is_valid():
                obj = form.save()       # 保存数据,并返回一个obj
                pop_res_id = request.GET.get("pop_res_id")
                # 判断是点击+按钮带参数访问,还是通过add页面直接访问的
                if pop_res_id:
                    res = {"pk": obj.pk, "text": str(obj), "pop_res_id": pop_res_id}
                    return render(request, "pop.html", {"res": res})
                else:
                    return redirect(self.get_list_url())
        return render(request, "add_view.html", locals())

    # 删除的视图函数
    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())

    # 编辑的视图函数
    def change_view(self, request, id):
        ModelFormDemo = self.get_modelform_class()
        edit_obj = self.model.objects.filter(pk=id).first()
        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, "add_view.html", locals())
        form = ModelFormDemo(instance=edit_obj)
        return render(request, "change_view.html", locals())

    # 搜索的视图函数
    def get_serach_conditon(self, request):
        key_word = request.GET.get("q", "")
        self.key_word = key_word
        search_connection = Q()
        if key_word:
            # self.search_fields # ["title","price"]
            search_connection.connector = "or"
            # 用Q的这种添加方法可以添加字符串
            for search_field in self.search_fields:
                # search_field+"__contains"  ---->  title__contains="o"   就是title字段里面包含字母o的
                search_connection.children.append((search_field + "__contains", key_word))
        return search_connection

    # 过滤filter的视图函数
    def get_filter_condition(self, request):
        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

    # 查看的视图函数
    def list_view(self, request):
        if request.method == "POST":  # action
            print("POST:", request.POST)
            action = request.POST.get("action")  # patch_init
            selected_pk = request.POST.getlist("selected_pk")
            action_func = getattr(self, action)
            queryset = self.model.objects.filter(pk__in=selected_pk)
            ret = action_func(request, queryset)
            # return ret
        # 获取search的Q对象
        search_connection = self.get_serach_conditon(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).filter(filter_condition)  # 【obj1,obj2,....】

        # 按这ShowList展示页面
        showlist = ShowList(self, data_list, request)

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

    #  获取用户配置类里面的list_play[]
    def new_list_play(self):
        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

    # 获取用户配置类里面的actions 这个列表
    def new_actions(self):
        temp=[]
        temp.append(ModelStark.patch_delete)
        temp.extend(self.actions)
        return temp

    """把url进行反向解析,解耦到各自的函数中,函数中直接返回了对应的url"""
    # 获取修改页面的url
    def get_change_url(self, obj):
        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,))

        return _url

    # 获删除改页面的url
    def get_delete_url(self, obj):
        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 _url

    # 获取添加页面的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

    # 获取查看页面的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

    # 二级url分发函数
    def get_urls_2(self):
        temp = []
        model_name = self.model._meta.model_name
        app_label = self.model._meta.app_label
        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)))
        temp.append(url(r"^$", self.list_view, name="%s_%s_list" % (app_label, model_name)))
        return temp

    @property
    def urls_2(self):
        print(self.model)
        return self.get_urls_2(), None, None

class StarkSite(object):
    def __init__(self):
        self._registry = {}

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

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

    # 一级分发url函数
    def get_urls(self):
        temp = []
        for model, stark_class_obj in self._registry.items():
            model_name = model._meta.model_name
            app_label = model._meta.app_label
            # 分发增删改查
            temp.append(url(r"^%s/%s/" % (app_label, model_name), stark_class_obj.urls_2))

            ‘‘‘
            url(r"^app01/userinfo/",UserConfig(Userinfo).urls_2),
            url(r"^app01/book/",ModelStark(Book).urls_2), 

            ‘‘‘
        return temp

    @property
    def urls(self):

        return self.get_urls(), None, None

# 创建stark的一个单例对象
site = StarkSite()

app01/stark.py

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

class BookModelForm(ModelForm):
    class Meta:
        model = Book
        fields = "__all__"
        labels = {
            "title": "书籍名称",
            "price": "价格"
        }

class BookConfig(ModelStark):
    # 自定义展示列表
    list_display = ["title", "price", "publishDate", "publish", "authors"]
    # 自定义设置字段为连接
    list_display_links = ["title"]
    modelform_class = BookModelForm
    # 自定义搜索字段
    search_fields = ["title", "price"]

    def patch_init(self, request, queryset):
        print(queryset)
        queryset.update(price=123)
        return HttpResponse("批量初始化OK")
    patch_init.short_description = "批量初始化"
    # 自定义处理函数
    actions = [patch_init]
    # 自定义筛选字段
    list_filter=["title","publish","authors",]

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

app01/models.py

from django.db import models

# Create your models here.

from django.db import models

# Create your models here.
from django.db import models

# Create your models here.

class Author(models.Model):
    nid = models.AutoField(primary_key=True)
    name=models.CharField( max_length=32)
    age=models.IntegerField()

    # 与AuthorDetail建立一对一的关系
    authorDetail=models.OneToOneField(to="AuthorDetail",on_delete=models.CASCADE)

    def __str__(self):
        return self.name

class AuthorDetail(models.Model):

    nid = models.AutoField(primary_key=True)
    birthday=models.DateField()
    telephone=models.BigIntegerField()
    addr=models.CharField( max_length=64)

    def __str__(self):
        return self.telephone

class Publish(models.Model):
    nid = models.AutoField(primary_key=True)
    name=models.CharField( max_length=32)
    city=models.CharField( max_length=32)
    email=models.EmailField()
    def __str__(self):
        return self.name

class Book(models.Model):

    nid = models.AutoField(primary_key=True)
    title = models.CharField( max_length=32)
    publishDate=models.DateField()
    price=models.DecimalField(max_digits=5,decimal_places=2)

    # 与Publish建立一对多的关系,外键字段建立在多的一方
    publish=models.ForeignKey(to="Publish",to_field="nid",on_delete=models.CASCADE)
    # 与Author表建立多对多的关系,ManyToManyField可以建在两个模型中的任意一个，自动创建第三张表
    authors=models.ManyToManyField(to=‘Author‘,)
    def __str__(self):
        return self.title

原文地址：https://www.cnblogs.com/zhen1996/p/9822871.html