from django.db import models from django.contrib.auth.models import User class UserBehavior(models.Model): user = models.ForeignKey(User, on_delete=models.CASCADE) resource = models.ForeignKey(Resource, on_delete=models.CASCADE) behavior_type = models.CharField(max_length=10, choices=[('browse', '浏览'), ('collect', '收藏'), ('rate', '评分')]) timestamp = models.DateTimeField(auto_now_add=True) # 在前端页面中，使用ajax发送用户行为数据到后端 # 假设用户浏览了一篇名为"Python基础教程"的资源 import json import datetime from django.http import JsonResponse def browse_resource(request): user = request.user resource_id = request.POST.get('resource_id') behavior_type = 'browse' timestamp = datetime.datetime.now() # 将用户行为记录保存到数据库中 behavior = UserBehavior(user=user, resource_id=resource_id, behavior_type=behavior_type, timestamp=timestamp) behavior.save() # 返回结果，告诉前端页面操作成功 response_data = {'success': True} return JsonResponse(response_data)

这段代码是一个 Django 的应用程序中的一部分，它定义了一个名为 UserBehavior 的模型，并且定义了一个名为 browse_resource 的视图函数。这个模型用于记录用户在某个资源上的行为，包括浏览、收藏和评分。视图函数 browse_resource 接收一个包含资源 ID 的 POST 请求，并将用户行为记录保存到数据库中。最后，返回一个 JSON 响应来告诉前端页面操作成功。

相关问题

from django.db import models from django.contrib.auth.models import AbstractBaseUser, BaseUserManager import uuid class User(AbstractBaseUser): 补全代码

class User(AbstractBaseUser):
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
email = models.EmailField(unique=True)
username = models.CharField(max_length=255, unique=True)
is_active = models.BooleanField(default=True)
is_staff = models.BooleanField(default=False)
date_joined = models.DateTimeField(auto_now_add=True)

# ... other fields and methods

USERNAME_FIELD = 'email'
REQUIRED_FIELDS = ['username']

objects = UserManager()

def __str__(self):
return self.email

def has_perm(self, perm, obj=None):
return True

def has_module_perms(self, app_label):
return True

@property
def is_superuser(self):
return self.is_staff

class Meta:
verbose_name = 'user'
verbose_name_plural = 'users'

帮助我针对以下代码画一个类图from django.db import models from django.db.models import Sum from django.contrib.auth.models import User from introduction.models import ScenicSpot # Create your models here. class OrderStatus(models.TextChoices): NOT_PAID = ('r', "ready to pay") PAID = ('p', "paid") class Order(models.Model): name = models.CharField(max_length=50) status = models.CharField(max_length=30, choices=OrderStatus.choices) purchase_time = models.DateField(auto_now_add=True) user = models.ForeignKey(User, related_name="orders", on_delete=models.CASCADE) def caculate_total_price(self): total_price = self.tickets.aggregate(total=Sum('scenic_spot__ticket_price')).get('total') return total_price class Ticket(models.Model): name = models.CharField(max_length=200) order = models.ForeignKey(Order, related_name="tickets", on_delete=models.CASCADE) scenic_spot = models.ForeignKey(ScenicSpot, related_name="tickets", on_delete=models.CASCADE)

根据给出的代码，可以画出以下类图：

+------------------+          +------------------+
|    OrderStatus   |          |      Order       |
+------------------+          +------------------+
| - NOT_PAID: str  |          | - name: str      |
| - PAID: str      |          | - status: str    |
+------------------+          | - purchase_time: |
                               |   date          |
                               | - user: User     |
                               +------------------+
                               | - calculate_total_price()|
                               +------------------+
                                         |
                                         |
                             +------------------+
                             |      Ticket      |
                             +------------------+
                             | - name: str      |
                             | - order: Order   |
                             | - scenic_spot:   |
                             |   ScenicSpot     |
                             +------------------+

注意：这只是一个示例类图，可能还有其他的类和关系未在代码中给出。