#models.py
class UserProfile(AbstractUser):
 '''
 繼承Django的AbstractUser 并向里面添加兩條數(shù)據(jù)內(nèi)容懷疑
 '''
 gender = models.CharField(max_length=6,choices=(('male','男'),('female','女')),default='female',verbose_name='性別')
 memo = models.TextField(null=True, blank=True,verbose_name='便簽')
 class Meta:
  verbose_name = '用戶信息'
  verbose_name_plural = verbose_name #指定模型的復(fù)數(shù)形式是什么,如果不指定Django會(huì)自動(dòng)在模型名稱后加一個(gè)'s'
 
class UserTodo(models.Model):
 created_time = models.DateTimeField(default=datetime.now(),verbose_name='創(chuàng)建時(shí)間')
 user_id = models.ForeignKey(UserProfile,on_delete=models.C ASCADE) #設(shè)置外鍵，關(guān)聯(lián)到UserProfile表
 # models.CASCADE表示若刪除某一用戶，則該用戶下的所有UserTodo也會(huì)被刪除
 ToDolist = models.CharField(max_length=255,verbose_name='todo')
 done = models.BooleanField(default=False,verbose_name='完成狀態(tài)')
 class Meta:
  verbose_name = '用戶自增信息'
  verbose_name_plural = verbose_name

from .models import UserProfile
from django.contrib.auth.hashers import make_password
user_profile = UserProfile()
user_profile.username = username
user_profile.email = email
user_profile.password = make_password(password) #make_password是django自帶的給password重新編碼技術(shù)，存儲(chǔ)在數(shù)據(jù)庫中
user_profile.is_active = True #判斷用戶是否激活
user_profile.save()

user_todo = UserTodo(ToDolist=todo,done=done,user_id=user_id,created_time=datetime.now()) 保存到數(shù)據(jù)庫中時(shí)按照用戶名所在的id進(jìn)行保存
user_todo.save()

user_id = UserProfile.objects.get(username=request.user) #獲取當(dāng)前登陸用戶的todo id（按照后臺(tái)的打印實(shí)際上為用戶名）
todo_query = UserTodo.objects.filter(user_email=user_id, done=False) #按照user_id、done進(jìn)行對數(shù)據(jù)庫的篩選
#在UserTodo表中找出user_id以及該用戶下done=False的數(shù)據(jù)
#todo_query的類型為<class 'django.db.models.query.QuerySet'>
todo_query = todo_query.order_by("created_time") # 按照截至日期按照從小到大的順序進(jìn)行篩選，若要從大到小排序則("-created_time")

todo_dict = todo_query.values("created_time") #經(jīng)過values，得到created_time的那一列數(shù)據(jù)

time_dict[3]['created_time'] #QuerySet中第四個(gè)名稱為created_time的數(shù)據(jù)（序號(hào)從0開始，因此3是第四個(gè)）3為網(wǎng)頁上元素的索引

打印print(time_dict[3]['created_time'])的結(jié)果為：2018-06-07 01:45:10.938825+00:00

time_index = time_dict[id]['created_time'] #id為從前端傳過來的網(wǎng)頁上元素的id
User = UserTodo.objects.get(user_id=user_id,created_time=time_index)
User.done = True
User.save()