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：
from django.db import models
from django.contrib.auth.models import AbstractUser
# Create your models here. class UserInfo(AbstractUser):
tel = models.CharField(max_length=32) class Room(models.Model):
caption = models.CharField(max_length=32)
num = models.IntegerField() #容纳人数
def __str__(self):
return self.caption class Book(models.Model):
user = models.ForeignKey(to="UserInfo",on_delete=models.CASCADE)
room = models.ForeignKey(to="Room",on_delete=models.CASCADE)
date = models.DateField()
time_choice = (
(1, '8:00'),
(2, '9:00'),
(3, '10:00'),
(4, '11:00'),
(5, '12:00'),
(6, '13:00'),
(7, '14:00'),
(8, '15:00'),
(9, '16:00'),
(10, '17:00'),
(11, '18:00'),
(12, '19:00'),
(13, '20:00'),
)
time_id = models.IntegerField(time_choice) class Meta:
unique_together = (
("room","date","time_id"),
) def __str__(self):
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。
from django.shortcuts import render,redirect,HttpResponse
from django.contrib import auth
from app01 import models
import datetime
import json
# Create your views here. def login(request): #设置登录处理函数
if request.method == "POST": username = request.POST.get("username")
pwd = request.POST.get("password")
user = auth.authenticate(username=username,password=pwd)
if user:
auth.login(request,user)
return redirect("/index/") return render(request,"login.html",locals()) date = datetime.datetime.now().date() def index(request): if not request.user.is_authenticated:
return redirect("/login/") book_date = request.GET.get("book_date",date) time_choice=models.Book.time_choice
room_obj = models.Room.objects.all()
book_obj = models.Book.objects.filter(date=date) htmls = ""
for room in room_obj:
htmls += "<tr><td>{}</td>".format(room) for time in time_choice: is_choose = False for book in book_obj:
if book.time_id == time[0] and book.room_id == room.pk: #判断是否有人预订
is_choose = True
break if is_choose:
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)
else:
htmls += "<td class='active item' time_id={} room_id={}>{}</td>".format(time[0],room.pk,book.user)
else:
htmls += "<td class='item' time_id={} room_id={}></td>".format(time[0],room.pk)
htmls += "</tr>"
return render(request,"index.html",locals())
def manage(request):
if request.method == "POST":
data = json.loads(request.POST.get("post_data"))
print(data)
for room_id,time_id_list in data["del"].items():
for time_id in time_id_list:
models.Book.objects.filter(user_id=request.user.pk,room_id=room_id,time_id=time_id,date=date).delete()
for room_id,time_id_list in data["add"].items():
for time_id in time_id_list:
models.Book.objects.create(user_id=request.user.pk,room_id=room_id,time_id=time_id,date=date)
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。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css">
<style>
.my_active{background-color: red}
.active{background-color: silver}
.temp_active{background-color: #2aabd2}
</style>
</head>
<body> <h1>会议室预订</h1> <table class="table table-bordered">
<tr>
<th>会议室/时间</th>
{% for time in time_choice %}
<th>{{ time.1 }}</th>
{% endfor %}
</tr>
{{ htmls|safe }}
</table>
<button>保存</button>
{% csrf_token %} <script src="/static/jquery.js"></script>
<script src="/static/bootstrap/js/bootstrap.js"></script>
<script> var post_data = {"add":{},"del":{}}; //为td标签绑定点击事件
$(".item").click(function(){ var time_id = $(this).attr("time_id");
var room_id = $(this).attr("room_id"); if($(this).hasClass("my_active")){ //如果是登录人预订的时间
$(this).removeClass("my_active");
$(this).text(""); if(post_data["del"][room_id]){
post_data["del"][room_id].push(time_id)
}else{
post_data["del"][room_id] = [time_id,];
} }else if($(this).hasClass("active")){ //如果是别人预订的时间
alert("已经被预订！") }else if($(this).hasClass("temp_active")){
$(this).removeClass("temp_active")
$(this).text("")
post_data["add"][room_id].splice(jQuery.inArray(time_id,post_data["add"][room_id]),1) }else{ //如果没人预订
$(this).addClass("temp_active");
$(this).text("{{ request.user.username }}") if(post_data["add"][room_id]){
post_data["add"][room_id].push(time_id)
}else{
post_data["add"][room_id] = [time_id,];
}
}
console.log(post_data)
}) var csrf = $("[name='csrfmiddlewaretoken']").val() $("button").click(function(){
$.ajax({
url:"/manage/",
type:"post",
data:{
post_data:JSON.stringify(post_data),
csrfmiddlewaretoken:csrf,
},
dataType:"json",
success:function(arg){
console.log(arg)
location.href = "" }
})
})
</script>
</body>
</html>