版权声明：转载记得署名:Dr.Yao https://blog.csdn.net/weixin_42879237/article/details/85563345
这是一个酒店的模型
from django.db import models
# Create your models here.
class Client(models.Model):
GENDER_CHOICES=(
('male',u"男"),
('female',u"女"),
('secret',u"保密")
)
name =models.CharField(max_length=100)
gender =models.CharField(max_length=10,choices=GENDER_CHOICES,default="secret")
telephone = models.CharField(max_length=11,unique=True)
ID_num=models.CharField(max_length=20,unique=True)
def __str__(self):
return "<Client:({name},{gender},{telephone},{ID_num})>".format(name=self.name,gender=self.gender,telephone=self.telephone,ID_num=self.ID_num)
class Room(models.Model):
TYPE_CHOICES =(
(1,"big"),
(2,"middle"),
(3,"small")
)
STATE_CHOICES = (
(1,u"empty"),
(2,u"full")
)
num = models.IntegerField()
type =models.CharField(max_length=2,choices =TYPE_CHOICES)
address =models.TextField()
price =models.FloatField()
state =models.CharField(max_length=2,choices=STATE_CHOICES,default=1)
remark=models.TextField(null=True)
class RoomOrder(models.Model):
client = models.ForeignKey("Client",on_delete=models.CASCADE )
room =models.ForeignKey("Room",on_delete=models.CASCADE)
startDate = models.DateTimeField(auto_now_add=True)
endDate = models.DateTimeField(auto_now=True)
remark = models.TextField()
class Meta:
ordering =['-startDate']
配置数据库
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'restaurant',
'HOST': '127.0.0.1',
'PORT': '3306',
'USER': 'root',
'PASSWORD':'7923161',
}
}
码农们的必备技能增删改查。复习完毕。明天贴上实战项目。
from django.shortcuts import render
from django.shortcuts import HttpResponse
from datetime import datetime
from .models import RoomOrder,Client,Room
# Create your views here.
def index(request):
return HttpResponse("酒店页面")
def roomorder(request):
#增加数据
# client =Client(name='罗伟中',gender='male',telephone=13698546412,ID_num=4419041975012123)
# client.save()
# return HttpResponse("酒店下单系统")
# 查询并且改动数据
# client =Client.objects.get(pk=2)
# client.gender="female"
# client.save()
#删除数据
client = Client.objects.get(pk=2)
client.delete()
print(client)
return HttpResponse("我在查询")