python的web框架---Django項目

Django項目之會議室預預訂：

界面效果展現：

一、建立超級管理員，實現預約界面功能

 

 

二、預約界面：

 

（一）基於pymysql設計數據表結構，理清先後端與用戶交互邏輯。（用戶表，會議室表，預約內容存儲表）

　　一、settings設置默認數據庫爲mysql

DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', 'NAME':'dbname', 'USER': 'root', 'PASSWORD': '', 'HOST': '', 'PORT': '', } }

　　二、model表設計：

 

 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()     #容納人數
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 "{}預約了{}".format(self.user,self.room)

 

 

 

二、梳理urls路由系統、利用內置的auth驗證模塊編寫用戶登陸。利用js在後端處理用戶操做，ajax技術發送request數據。

 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):　　#設置登陸處理函數  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:   #判斷是否有人預訂
46                     is_choose = True 47                     break
48 
49             if is_choose: 50                 if request.user.pk == book.user_id:　　#在python代碼層面處理模板json數據
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"))

 

三、編寫templates模板，利用bootstrap豐富起始界面，在python代碼層面處理模板json數據。

 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>會議室預訂</h1>
16 
17 
18 
19 <table class="table table-bordered">
20     <tr>
21         <th>會議室/時間</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     //爲td標籤綁定點擊事件 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")){        //若是是登陸人預訂的時間 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")){        //若是是別人預訂的時間 56             alert("已經被預訂！") 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{                                   //若是沒人預訂 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>