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  • crm-项目回顾

    1,querydict用法:

    from django.http import QueryDict
    def edit_link_tag(self,pk,text):  
            query_str = self.request.GET.urlencode()    # page=2&nid=1  
              params = QueryDict(mutable=True)      #mutable=True让Querydict可以变化
        params[self.config._query_param_key] = query_str 

      return mark_safe('<a href="%s?%s">%s</a>' % (self.config.get_change_url(pk), params.urlencode(),text,)) # /stark/app01/userinfo/

    2,类里面的迭代功能:def __iter__(self):  

    3,在JSON传到html页面的时候,中文也可以显示

    ensure_ascii=False

    4,通过对象反向找与之关联类名以及所有对象

    from django.db.models.fields.reverse_related import ManyToOneRel
    if form.is_valid():
                    result = {'status': False, 'obj_pk': None, 'obj_name': None, 'popbackid': None}
                    form_obj=form.save()
                    if _popbackid:   #如果add里的popup触发,点击提交后   这里代表已经有popup
                        model_name=request.GET.get('model_name')
                        related_name=request.GET.get('related_name')
    
                        for re_name in form_obj._meta.related_objects:    #通过这个对象反向找到与之相关联的对象
                            form_model_name=re_name.field.model._meta.model_name  #通过这个对象找到类名
                            _related_name=re_name.related_name    
    
                            if type(re_name)==ManyToOneRel:
                                field_name=re_name.field_name
                            else:
                                field_name='pk'
                            limit_choice_to=re_name.limit_choices_to
    
                            if model_name==form_model_name and related_name==str(_related_name):
                                is_exists=self.models_class.objects.filter(**limit_choice_to,pk=form_obj.pk).exists()
                                if is_exists:
                                    result['status'] = True
                                    result['obj_name'] = str(form_obj)
                                    result['obj_pk'] = getattr(form_obj,field_name)
                                    result['popbackid']=_popbackid
    
                                    return render(request,'stark/popresponse.html',{'result':json.dumps(result,ensure_ascii=False)})

    5,通过Q把类里的字段一起判断,结果是一个键值对

    con=Q()
            con.connector='or'                          #这里的or是什么
            if seach_name:
                for file in seach_file:
                    con.children.append((file,seach_name))

    Q对象OR连接
        def public(self,request):
            time_now=datetime.datetime.now().now()  #取到现在的时间
            no_deal=time_now-datetime.timedelta(days=15)
            no_talk=time_now-datetime.timedelta(days=3)
            con1=Q()
            con1.connector='OR'  #里面的数据用or连接
            con1.children.append(('last_consult_date__lt',no_talk))    
            con1.children.append(('recv_date__lt',no_deal))
            # con2=Q()
            # con2.children.append(('status',2))
            # con=Q()
            # con.add(con1,'AND')
            # con.add(con2,'AND')
            cust_list=models.Customer.objects.filter(con1,status=2)  #这个的Q对象con1 和status是and连接,但是con1里面是or连接.
    
    
    




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  • 原文地址:https://www.cnblogs.com/52forjie/p/8185539.html
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