Django学习路16_获取学生所在的班级名

在 urls.py 中先导入getgrades

from django.conf.urls import url

from app5 import views

urlpatterns = [
    url(r‘getuser/‘,views.get_user),
    url(r‘getusers/‘,views.get_users),
    url(r‘getorder‘,views.getorders),
    url(r‘getgrades‘,views.getgrades),
]

在 views.py 中编写 getgrades 函数

def getgrades(request):
    grades = Grade.objects.filter(student__s_name=‘qq‘)
    # 班级里包含名字为 qq 的
    for grade in grades:
        print(grade.g_name)

    return HttpResponse("获取成功")

此前的准备工作:创建数据库表 

class Grade(models.Model):
    g_name = models.CharField(max_length=16)

class Student(models.Model):
    s_name = models.CharField(max_length= 16)
    s_grade = models.ForeignKey(Grade,on_delete=True)
    # 设置班级外键