python的web框架---Django项目
Django项目之会议室预预订：
界面效果展示：
1、创建超级管理员，实现预定界面功能
2、预定界面：
（一）基于pymysql设计数据表结构，理清前后端与用户交互逻辑。（用户表，会议室表，预定内容存储表）
1、settings设置默认数据库为mysql
DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', 'NAME':'dbname', 'USER': 'root', 'PASSWORD': '', 'HOST': '', 'PORT': '', } }
2、model表设计：
1 from django.db import models 2 from django.contrib.auth.models import AbstractUser 3 # Create your models here. 4 5 6 class UserInfo(AbstractUser): 7 tel = models.CharField(max_length=32) 8 9 class Room(models.Model): 10 caption = models.CharField(max_length=32) 11 num = models.IntegerField() #容纳人数 12 def __str__(self): 13 return self.caption 14 15 class Book(models.Model): 16 user = models.ForeignKey(to="UserInfo",on_delete=models.CASCADE) 17 room = models.ForeignKey(to="Room",on_delete=models.CASCADE) 18 date = models.DateField() 19 time_choice = ( 20 (1, '8:00'), 21 (2, '9:00'), 22 (3, '10:00'), 23 (4, '11:00'), 24 (5, '12:00'), 25 (6, '13:00'), 26 (7, '14:00'), 27 (8, '15:00'), 28 (9, '16:00'), 29 (10, '17:00'), 30 (11, '18:00'), 31 (12, '19:00'), 32 (13, '20:00'), 33 ) 34 time_id = models.IntegerField(time_choice) 35 36 class Meta: 37 unique_together = ( 38 ("room","date","time_id"), 39 ) 40 41 def __str__(self): 42 return "{}预定了{}".format(self.user,self.room)
2、梳理urls路由系统、利用内置的auth验证模块编写用户登录。利用js在后端处理用户操作，ajax技术发送request数据。
1 from django.shortcuts import render,redirect,HttpResponse 2 from django.contrib import auth 3 from app01 import models 4 import datetime 5 import json 6 # Create your views here. 7 8 def login(request): #设置登录处理函数 9 if request.method == "POST": 10 11 username = request.POST.get("username") 12 pwd = request.POST.get("password") 13 user = auth.authenticate(username=username,password=pwd) 14 if user: 15 auth.login(request,user) 16 return redirect("/index/") 17 18 return render(request,"login.html",locals()) 19 20 21 date = datetime.datetime.now().date() 22 23 24 def index(request): 25 26 if not request.user.is_authenticated: 27 return redirect("/login/") 28 29 30 book_date = request.GET.get("book_date",date) 31 32 time_choice=models.Book.time_choice 33 room_obj = models.Room.objects.all() 34 book_obj = models.Book.objects.filter(date=date) 35 36 htmls = "" 37 for room in room_obj: 38 htmls += "<tr><td>{}</td>".format(room) 39 40 for time in time_choice: 41 42 is_choose = False 43 44 for book in book_obj: 45 if book.time_id == time[0] and book.room_id == room.pk: #判断是否有人预订 46 is_choose = True 47 break 48 49 if is_choose: 50 if request.user.pk == book.user_id: #在python代码层面处理模板json数据
51 htmls += "<td class='my_active item' time_id={} room_id={}>{}</td>".format(time[0],room.pk,book.user)
52 else:
53 htmls += "<td class='active item' time_id={} room_id={}>{}</td>".format(time[0],room.pk,book.user) 54 else: 55 htmls += "<td class='item' time_id={} room_id={}></td>".format(time[0],room.pk) 56 57 htmls += "</tr>" 58 59 return render(request,"index.html",locals()) 60 61 def manage(request): 62 if request.method == "POST": 63 data = json.loads(request.POST.get("post_data")) 64 print(data) 65 66 for room_id,time_id_list in data["del"].items(): 67 for time_id in time_id_list: 68 models.Book.objects.filter(user_id=request.user.pk,room_id=room_id,time_id=time_id,date=date).delete() 69 70 for room_id,time_id_list in data["add"].items(): 71 for time_id in time_id_list: 72 models.Book.objects.create(user_id=request.user.pk,room_id=room_id,time_id=time_id,date=date) 73 74 75 return HttpResponse(json.dumps("ok"))
3、编写templates模板，利用bootstrap丰富起始界面，在python代码层面处理模板json数据。
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Title</title> 6 <link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css"> 7 <style> 8 .my_active{background-color: red} 9 .active{background-color: silver} 10 .temp_active{background-color: #2aabd2} 11 </style> 12 </head> 13 <body> 14 15 <h1>会议室预订</h1> 16 17 18 19 <table class="table table-bordered"> 20 <tr> 21 <th>会议室/时间</th> 22 {% for time in time_choice %} 23 <th>{{ time.1 }}</th> 24 {% endfor %} 25 </tr> 26 {{ htmls|safe }} 27 </table> 28 <button>保存</button> 29 {% csrf_token %} 30 31 32 <script src="/static/jquery.js"></script> 33 <script src="/static/bootstrap/js/bootstrap.js"></script> 34 <script> 35 36 37 var post_data = {"add":{},"del":{}}; 38 39 //为td标签绑定点击事件 40 $(".item").click(function(){ 41 42 var time_id = $(this).attr("time_id"); 43 var room_id = $(this).attr("room_id"); 44 45 if($(this).hasClass("my_active")){ //如果是登录人预订的时间 46 $(this).removeClass("my_active"); 47 $(this).text(""); 48 49 if(post_data["del"][room_id]){ 50 post_data["del"][room_id].push(time_id) 51 }else{ 52 post_data["del"][room_id] = [time_id,]; 53 } 54 55 }else if($(this).hasClass("active")){ //如果是别人预订的时间 56 alert("已经被预订！") 57 58 }else if($(this).hasClass("temp_active")){ 59 $(this).removeClass("temp_active") 60 $(this).text("") 61 post_data["add"][room_id].splice(jQuery.inArray(time_id,post_data["add"][room_id]),1) 62 63 }else{ //如果没人预订 64 $(this).addClass("temp_active"); 65 $(this).text("{{ request.user.username }}") 66 67 if(post_data["add"][room_id]){ 68 post_data["add"][room_id].push(time_id) 69 }else{ 70 post_data["add"][room_id] = [time_id,]; 71 } 72 } 73 console.log(post_data) 74 }) 75 76 var csrf = $("[name='csrfmiddlewaretoken']").val() 77 78 $("button").click(function(){ 79 $.ajax({ 80 url:"/manage/", 81 type:"post", 82 data:{ 83 post_data:JSON.stringify(post_data), 84 csrfmiddlewaretoken:csrf, 85 }, 86 dataType:"json", 87 success:function(arg){ 88 console.log(arg) 89 location.href = "" 90 91 } 92 }) 93 }) 94 </script> 95 </body> 96 </html>
