django配置四（代码举例）

• models.py

from django.db import models

# Create your models here.
class Userinfo(models.Model):
    email=models.CharField(max_length=50,unique=True)
    password=models.CharField(max_length=50)
    nickname=models.CharField(max_length=50)
    mobile=models.CharField(max_length=32,unique=True)
    birthday=models.DateField()
    createtime=models.DateTimeField(auto_now_add=True)

class MessageInfo(models.Model):
    message=models.CharField(max_length=2000)
    score=models.DecimalField(max_digits=19,decimal_places=2,default=2)
    messagetime=models.DateTimeField(auto_now_add=True)
    useful=models.IntegerField(default=0)
    useless=models.IntegerField(default=0)
    uid=models.ForeignKey('Userinfo',on_delete=models.CASCADE)

• 子项目urls.py

from django.urls import path
from . import views

urlpatterns=[
    path('index/',views.index),
    path('signin/',views.signin),
    path('find/',views.find),
    path('addUser/',views.addUser),
    path('login/',views.login),
    path('logout/',views.logout),
    path('review/',views.review),
    path('comment/',views.comment)
]

• views.py

from django.shortcuts import render,redirect
from .models import *
from django.contrib import messages
# Create your views here.

#打开主页面
def index(request):
    return render(request,'index.html')
#打开登录页面
def signin(request):
    return render(request,'signin.html')
#打开查找页面
def find(request):
    return render(request,'find.html')
#注销
def logout(request):
    del request.session['id']
    return render(request,'index.html')
#打开评分页面
def review(request):
    return render(request,'review.html')
#增加用户

def addUser(request):
    try:
        post=request.POST
        user=Userinfo()
        user.email=post.get('email')
        existemail=Userinfo.objects.filter(email=user.email) #得到一个email=user.email的set集合
        if len(existemail)>0: #通过set集合长度来判断是否已经存在
            return render(request,'find.html',{'msg':'exist'}) #如果大于0，则此email已经存在，不能重复注册，所以重新渲染此页面并给出错误提示
        else:
            user.password=post.get('password')
            user.nickname=post.get('nickname')
            user.mobile=post.get('mobile')
            existmobile=Userinfo.objects.filter(mobile=user.mobile)
            if len(existmobile)>0:
                return render(request,'find.html',{'msg1':'exist'})
            else:
                user.birthday=post.get('birthday')
                user.save() #自动生成mysql语句插入数据
                return redirect('/file/index')
    except:
        return render(request,'find.html')


def login(request):
    post=request.POST
    uinfo=post.get('info')
    passwd=post.get('password')

    # users=Userinfo.objects.filter(email=uinfo ,password=passwd)
    # if len(users)>0:
    #     request.session['id']=users[0].email
    #     return redirect('/file/index')
    #
    # else:
    #     return render(request,'signin.html',{'message':'密码或者邮箱为空/输入错误！'})

    email=Userinfo.objects.filter(email=uinfo)
    if len(email)==1:
        request.session['id']=email[0].email
        passwd=Userinfo.objects.filter(password=passwd)
        if len(passwd)!=0:
            return redirect('/file/index')
            # return render(request,'index.html',{'success':'1'}) #可以给一个页面传值
        else:
            return render(request,'signin.html',{'message':'密码错误！'})
    else:
        return render(request,'signin.html',{'message':'邮箱输入错误！'})




    # infos=Userinfo.objects.all()
    # flag=1
    # for i in infos:
    #     if uinfo==i.email or uinfo==i.mobile and passwd==i.password:
    #         return redirect('/file/index')
    #         flag=0
    # if flag==1:
    #     return render(request,'signin.html')

#发表评论
def comment(request):
    try:
        post=request.POST
        msg=MessageInfo()
        msg.message=post.get('message')
        msg.score=post.get('score')
        #取到用户id是通过前面存在的email来反查的，同时规定uid的值存的是对象，而不是id值
        # email=request.session['id']
        # user=Userinfo.objects.filter(email=email)
        # msg.uid=user[0]
        msg.uid=Userinfo.objects.filter(email=request.session['id'])[0]
        msg.save()
        # return render(request,'index.html')
        return redirect('/file/index')
    except:
        return render(request,'review.html')