问题2：客户的添加页面，通过popup创建用户时
解决方案：
如果新创建的用户时：如果是销售部的人，页面才增加
目的是:拿到limit_choices_to，就可以判断了
当有两个Foreignkey的时候，都关联同一张表，反向生成的时候
不知道去找那个字段了，得加上releated_name
1、创建表
from django.db import models # Create your models here. class UserInfo(models.Model): user_type_choices = ( (1,"班主任"), (2,"讲师") ) user_type_id = models.IntegerField(choices=user_type_choices) name = models.CharField(max_length=32,verbose_name="姓名") pwd = models.CharField(max_length=32,verbose_name="密码") class ClassList(models.Model): teacher = models.ForeignKey(to="UserInfo",to_field="id",limit_choices_to={"user_type_id":1},related_name="toclasslist") ## user_obj.tclasslist.all() classteacher = models.ForeignKey(to="UserInfo",to_field="id",limit_choices_to={"user_type_id":2}) #没有related_name默认是None #user_obj.classlist_set.all() class Test(models.Model): title = models.CharField(max_length=32) teacher = models.ForeignKey(to="UserInfo",to_field="id",limit_choices_to={"user_type_id":3}) #注意limit_choices_to的key必须要和上面的对应上
2、urls
from django.conf.urls import url from django.contrib import admin from app01 import views urlpatterns = [ url(r'^admin/', admin.site.urls), url(r'^test/',views.test), url(r'^index/',views.index), url(r'^condition/',views.condition), ]
3、views
from django.db.models import Q from django.shortcuts import render,HttpResponse from django.forms import ModelForm from app01 import models # Create your views here. class UserInfoForm(ModelForm): class Meta: model = models.UserInfo fields = "__all__" class ClassListForm(ModelForm): class Meta: model = models.ClassList fields = "__all__" def condition(request): '''测试Q查询''' key_word = request.GET.get("q") # print(key_word) search_fileds = ['name', 'email'] # 拿到搜索字段 condition = Q() condition.connector = "or" if key_word and True: for fields_name in search_fileds: condition.children.append((fields_name, key_word)) print(condition) return HttpResponse("ok") def test(request): mn = request.GET.get("model_name") rn = request.GET.get("related_name") from django.db.models.fields.reverse_related import ManyToOneRel # 1、创建用户（自己创建的用户和利用ModelForm,form.save()创建的一样）） # form = UserInfoForm(request.POST) # obj = form.save() obj = models.UserInfo.objects.create(user_type_id=1,name="hiana",pwd=123456) # 2、判断用户的类型是否可以放置到班主任的下拉框 #获取obj对象可反向关联的所有的字段 #关联字段所在类的名称等 # print(obj._meta.related_objects) #(<ManyToOneRel: app01.classlist>, <ManyToOneRel: app01.classlist>, <ManyToOneRel: app01.test>) for related_object in obj._meta.related_objects: # print(related_object.related_name) #打印的是反向查询的related_name，结果是：toclasslist,None,None # print(related_object.field,"1") #app01.ClassList.teacher 关联的那个字段的名字 # print(related_object.field.model,"2") #<class 'app01.models.ClassList'> 关联的字段所在的类 # print(related_object.field.model._meta.model_name,"3") #classlist 关联字段所在的类名 model_name = related_object.field.model._meta.model_name related_name =related_object.related_name if type(related_object) ==ManyToOneRel: to_field_value = related_object.field_name #那到的是反向查询关联字段（to_fields）的值 id limit_choices_to = related_object.limit_choices_to #拿到的是limit_choices_to的值{'user_type_id': 2} if model_name==mn and str(related_name)==rn: print(to_field_value,limit_choices_to) models.UserInfo.objects.filter(**limit_choices_to,pk=obj.pk) # models.UserInfo.objects.filter(**{"user_type_id":2},pk=obj.pk) return HttpResponse("ok") def index(request): form = ClassListForm() return render(request,"index.html",{"form":form})
4、templates
index.html
<body>
{{ form.as_p }}
</body>
