stark组件开发之编辑功能实现

    def memory_url(self, get_url_name, *args, **kwargs):
        ‘‘‘用于反向生成url， 并且携带，get请求的参数，跳转到下一个网页‘‘‘
        name = "%s:%s" % (self.site.namespace, get_url_name)
        base_url = reverse(name, args=args, kwargs=kwargs)
        # 记录原搜索条件
        if not self.request.GET:
            add_url = base_url
        else:
            param = self.request.GET.urlencode()  # 获取到GET请求的，所有的参数。 ?page=1&age=20
            new_query_dict = QueryDict(mutable=True)
            new_query_dict["_filter"] = param
            add_url = "%s?%s" % (base_url, new_query_dict.urlencode())
        return add_url

    # 用于 跳转会原页面时，解析出 GET 请求的参数。并拼接
    def memory_reverse(self, get_url_name, *args, **kwargs):
        name = "%s:%s" % (self.site.namespace, get_url_name)
        url = reverse(name, args=args, kwargs=kwargs)
        origin_params = self.request.GET.get("_filter")
        if origin_params:
            url = "%s?%s" % (url, origin_params)
        return url

    # 用于用户自定制， 是否显示编辑按钮
    def display_edit(self, obj=None, is_header=None):
        ‘‘‘
        自定义页面，显示的列，(表头和内容)
        :param obj:   数据库中每一行记录的 model对象
        :param is_header:  判断是否为表头
        :return:
        ‘‘‘
        if is_header:
            return "编辑表头"
        # name = "%s:%s" % (self.site.namespace, self.get_edit_url_name)  # 拼接 stark:app01_userinfo_change
        return mark_safe("<a href=‘%s‘>编辑</a>" %
                         self.memory_url(get_url_name=self.get_edit_url_name, pk=obj.pk))

    # 用于用户自定制， 是否显示删除按钮
    def display_del(self, obj=None, is_header=None):
        if is_header:
            return "删除表头"
        # name = "%s:%s" % (self.site.namespace, self.get_del_url_name)
        return mark_safe("<a href=‘%s‘>删除</a>" %
                         self.memory_url(get_url_name=self.get_del_url_name, pk=obj.pk))

    def change_view(self, request, pk):
        ‘‘‘
        编辑页面
        :param request:
        :return:
        ‘‘‘
        current_change_obj = self.model_class.objects.filter(pk=pk).first()
        if not current_change_obj:
            return HttpResponse("要修改的页面不存在，请重新选择")

        model_form_class = self.get_model_form_class()
        if request.method == "GET":
            form = model_form_class(instance=current_change_obj)
            return render(request, "stark/change.html", {"form": form})if request.method == "POST":
　　　　　　　form = model_form_class(data=request.POST, instance=current_change_obj)
            if form.is_valid():
                self.save(form, is_update=False)
                return redirect(self.memory_reverse(self.get_list_url_name))
            return render(request, "stark/change.html", {"form": form})
        return HttpResponse("编辑页面")