11 django模型层_多表练习

模型层_多表练习

基于book系统，加上出版社和作者字段，如下：

html模板层

 1 <div class="action">
 2     <div class="panel panel-danger">
 3         <div class="panel-heading">2019进击的菜鸟</div>
 4         <div class="panel-body">
 5             web框架开发
 6         </div>
 7         <div class="panel-body">
 8             crm&爬虫
 9         </div>
10         <div class="panel-body">
11             算法&设计模式&企业应用
12         </div>
13         <div class="panel-body">
14             vue项目
15         </div>
16         <div class="panel-body">
17             复习python&自动化&性能
18         </div>
19     </div>
20     <div class="panel panel-warning">
21         <div class="panel-heading">2020进击的小鸟</div>
22         <div class="panel-body">
23             fighting!
24         </div>
25     </div>
26     <div class="panel panel-success">
27         <div class="panel-heading">2021进击的大鸟</div>
28         <div class="panel-body">
29             go on !
30         </div>
31     </div>
32 </div>
templates\advertise.html
 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     {% block title %}
 6         <title>base——title</title>
 7     {% endblock title %}
 8     <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css"
 9           integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
10     {% block style %}
11         <style type="text/css">
12         *{
13             padding: 0;
14             margin:0;
15         }
16         .header{
17             width:100%;
18             height: 50px;
19             background-color: #369;
20         }
21         body{
22             background:#FFF url('/static/base.jpg') repeat-x 0;
23             background-attachment: fixed;
24         }
25     </style>
26     {% endblock style %}
27 
28 </head>
29 <body>
30 
31 <div class="header"></div>
32 
33 <div class="container">
34     <div class="row">
35         <div class="col-md-3">
36             {% include 'advertise.html' %}
37         </div>
38         <div class="col-md-9">
39             {% block content%}
40             <h3>base_content</h3>
41             {% endblock %}
42         </div>
43     </div>
44 </div>
45 
46 </body>
47 {% block js %}
48 <script type="text/javascript" src="/static/jquery-3.3.1.js"></script>
49 {% endblock js %}
50 </html>
templates\base.html
 1 {% extends 'base.html' %}
 2 
 3 {% block style %}
 4     {{ block.super }}
 5     <style>
 6         .mybook {
 7             margin-top: 40px;
 8         }
 9 
10         .btn {
11             margin-top: 5px;
12         }
13         .other{
14             margin-top: 5px;
15         }
16         .filter{
17             margin-bottom: 30px;
18         }
19         .empty{
20             text-align: center;
21             color: #D0D0D0;
22         }
23     th,td{
24         text-align: center;
25     }
26     </style>
27 {% endblock style %}
28 
29 {% block title %}
30     <title>book</title>
31 {% endblock title %}
32 
33 {% block content %}
34     <h3>查看书籍</h3>
35 
36     <div class="container mybook">
37         <div class="row">
38             <div class="col-md-7">
39                 <form class="form-inline filter" action="">
40                     <div class="form-group">
41                         <div class="form-group other">
42                             <label for="">书籍名称</label>
43                             <input type="text" class="form-control"  placeholder="python" name="title">
44                         </div>
45                     </div>
46                     <button type="submit" class="btn btn-primary">查询</button>
47                 </form>
48                 <a href="/app01/book/add" class="btn btn-primary other">添加书籍</a>
49                 <table class="table table-striped table-bordered">
50                     <thead>
51                     <tr>
52                         <th>书籍名称</th>
53                         <th>价格</th>
54                         <th>出版日期</th>
55                         <th>出版社</th>
56                         <th>作者</th>
57                         <th>操作</th>
58                     </tr>
59                     </thead>
60                     <tbody>
61                     {% for book in book_list %}
62                         <tr>
63                             <td>{{ book.title }}</td>
64                             <td>{{ book.price }}</td>
65                             <td>{{ book.pub_date|date:'Y-m-d' }}</td>
66                             <td>{{ book.publish.name }}</td>
67                             <td>
68                                 {% for author in book.authors.all %}
69                                     {% if forloop.last %}
70                                         <span>{{ author.name }}</span>
71                                     {% else %}
72                                         <span>{{ author.name }}</span>,
73                                     {% endif %}
74                                 {% endfor %}
75                             </td>
76                             <td>
77                                 <a href="/app01/book/{{ book.pk }}/update" class="btn btn-info">编辑</a>
78                                 <a href="/app01/book/{{ book.pk }}/delete" class="btn btn-danger">删除</a>
79                             </td>
80                         </tr>
81                         {% empty %}
82                             <td class="empty" colspan="6">暂无数据!</td>
83                     {% endfor %}
84 
85                     </tbody>
86 
87                 </table>
88 
89             </div>
90         </div>
91     </div>
92 {% endblock content %}
templates\book.html
 1 {% extends 'base.html' %}
 2 
 3 {% block style %}
 4     {{ block.super }}
 5     <style>
 6         .mybook {
 7             margin-top: 50px;
 8         }
 9 
10         .btn {
11             margin-top: 10px;
12         }
13 
14         .opt_res {
15             margin-top: 50px;
16             color: red;
17         }
18     </style>
19 {% endblock style %}
20 
21 {% block title %}
22     <title>book</title>
23 {% endblock title %}
24 
25 {% block content %}
26     <h3>新增书籍</h3>
27 
28     <div class="container mybook">
29         <div class="row">
30             <div class="col-md-6">
31                 <form action="" method="post">
32                     {% csrf_token %}
33                     <div class="form-group">
34                         <label for="">书籍名称</label>
35                         <input type="text" class="form-control" name="title" value={{ title }}>
36                     </div>
37                     <div class="form-group">
38                         <label for="">价格</label>
39                         <input type="text" class="form-control" name="price" value={{ price }}>
40                     </div>
41                     <div class="form-group">
42                         <label for="">出版日期</label>
43                         <input type="date" class="form-control" name="date" value={{ date }}>
44                     </div>
45                     <div class="form-group">
46                         <label for="">出版社</label>
47                         <select name="publish_id" id="" class="form-control">
48                             {% for publish in publish_obj %}
49                                 <option value={{ publish.pk }}>{{ publish.name }}</option>
50                             {% endfor %}
51                         </select>
52                     </div>
53                     <div class="form-group">
54                         <label for="">作者</label>
55                         <select type="text" name="authors_id_list" multiple class="form-control">
56                             {% for author in author_obj %}
57                                 <option value="{{ author.pk }}">{{ author.name }}</option>
58                             {% endfor %}
59                         </select>
60                     </div>
61                     <input type="submit" class="btn btn-success pull-right">
62                 </form>
63                 <p class="opt_res">{{ opt_res }}</p>
64             </div>
65         </div>
66     </div>
67 {% endblock content %}
templates\addbook.html
 1 {% extends 'base.html' %}
 2 
 3 {% block style %}
 4     {{ block.super }}
 5     <style>
 6         .mybook {
 7             margin-top: 50px;
 8         }
 9 
10         .btn {
11             margin-top: 10px;
12         }
13 
14         .opt_res {
15             margin-top: 50px;
16             color: red;
17         }
18     </style>
19 {% endblock style %}
20 
21 {% block title %}
22     <title>book</title>
23 {% endblock title %}
24 
25 {% block content %}
26     <h3>修改书籍</h3>
27 
28     <div class="container mybook">
29         <div class="row">
30             <div class="col-md-6">
31                 <form action="" method="post">
32                     {% csrf_token %}
33                     <div class="form-group">
34                         <label for="">书籍名称</label>
35                         <input type="text" class="form-control" name="title" value="{{ book_obj.title }}">
36                     </div>
37                     <div class="form-group">
38                         <label for="">价格</label>
39                         <input type="text" class="form-control" name="price" value="{{ book_obj.price }}">
40                     </div>
41                     <div class="form-group">
42                         <label for="">出版日期</label>
43                         <input type="date" class="form-control" name="date"
44                                value="{{ book_obj.pub_date|date:'Y-m-d' }}">
45                     </div>
46                     <div class="form-group">
47                         <label for="">出版社</label>
48                         <select name="publish_id" id="" class="form-control">
49                             {% for publish in publish_obj %}
50                                 {% if book_obj.publish == publish %}
51                                     <option value={{ publish.pk }} selected='True'>{{ publish.name }}</option>
52                                 {% else %}
53                                     <option value={{ publish.pk }}>{{ publish.name }}</option>
54                                 {% endif %}
55                             {% endfor %}
56                         </select>
57                     </div>
58                     <div class="form-group">
59                         <label for="">作者</label>
60                         <select type="text" name="authors_id_list" multiple class="form-control">
61                             {% for author in author_obj %}
62                                 {% if author in book_obj.authors.all %}
63                                     <option value="{{ author.pk }}" selected="True">{{ author.name }}</option>
64                                 {% else %}
65                                     <option value="{{ author.pk }}">{{ author.name }}</option>
66                                 {% endif %}
67                             {% endfor %}
68                         </select>
69                     </div>
70                     <input type="submit" class="btn btn-success pull-right">
71                 </form>
72                 <p class="opt_res">{{ opt_res }}</p>
73             </div>
74         </div>
75     </div>
76 {% endblock content %}
templates\updatebook.html

 

book控制器

06 django模型层\book\book\urls.py

from django.contrib import admin
from django.urls import path,re_path,include
urlpatterns = [
    path('admin/', admin.site.urls),
    re_path('^app01/', include(('book_app01.urls','book_app01'))),
]

 

book_app01控制器

06 django模型层\book\book_app01\urls.py

from django.urls import path,re_path,include
from book_app01 import views

urlpatterns = [
    path('book/', views.book),
    path('book/add', views.add_book),
    re_path(r'book/(\d+)/update', views.update_book),
    re_path(r'book/(\d+)/delete', views.delete_book),
]

 

book_app01模型层

06 django模型层\book\book_app01\models.py

 1 from django.db import models
 2 
 3 # Create your models here.
 4 
 5 
 6 class Publish(models.Model):
 7     id = models.AutoField(primary_key=True)
 8     name = models.CharField(max_length=32)
 9     city = models.CharField(max_length=32)
10     email = models.EmailField()
11 
12     def __str__(self):
13         return self.name
14 
15 
16 class Author(models.Model):
17     id = models.AutoField(primary_key=True)
18     name = models.CharField(max_length=32)
19 
20     # 一对一  与AuthorDetail
21     authorDetail = models.OneToOneField(to='AuthorDetail', on_delete=models.CASCADE)
22 
23     def __str__(self):
24         return self.name
25 
26 
27 class AuthorDetail(models.Model):
28     id = models.AutoField(primary_key=True)
29     age = models.BigIntegerField()
30     addr = models.CharField(max_length=32)
31     phone = models.BigIntegerField()
32 
33     # def __str__(self):
34     #     return self.phone
35 
36 
37 class Book(models.Model):
38     id = models.AutoField(primary_key=True)
39     title = models.CharField(max_length=32, unique=True)
40     price = models.DecimalField(max_digits=5, decimal_places=2)
41     pub_date = models.DateField()
42     read_num = models.BigIntegerField(default=0)
43     comment_num = models.BigIntegerField(default=0)
44 
45     # 一对多
46     publish = models.ForeignKey(to='Publish', to_field='id', on_delete=models.CASCADE)
47 
48     # 多对多    自动创建第三张表  book_authors
49     authors = models.ManyToManyField(to='Author',)
50 
51     def __str__(self):
52         return self.title
53 
54 
55 class Employee(models.Model):
56     id = models.AutoField(primary_key=True)
57     name = models.CharField(max_length=32, unique=True)
58     age = models.BigIntegerField()
59     sal = models.DecimalField(max_digits=5, decimal_places=1)
60     dep = models.CharField(max_length=32)
61 
62     def __str__(self):
63         return self.name

 

book_app01视图层

 1 from django.shortcuts import render,redirect
 2 from book_app01.models import *
 3 
 4 # Create your views here.
 5 
 6 
 7 def book(request):
 8     method = request.method
 9     req = request.POST if request.POST else request.GET
10     try:
11         title = req.get('title') if req.get('title') else ''
12     except exception as e:
13         title = ''
14     book_list = Book.objects.filter(title__contains=title)
15 
16     return render(request, 'book.html', locals())
17 
18 
19 def add_book(request):
20     method = request.method
21     res = Publish.objects.all().exists()
22     res_author = Author.objects.all().exists()
23     if not res:
24         Publish.objects.create(name='人民出版社', city='北京', email='123@qq.com')
25         Publish.objects.create(name='南京出版社', city='南京', email='456@qq.com')
26         Publish.objects.create(name='东京出版社', city='东京', email='789@qq.com')
27     if not res_author:
28         d1 = AuthorDetail.objects.create(age=18, addr='北京', phone=13537730001)
29         d2 = AuthorDetail.objects.create(age=28, addr='北京', phone=13667730001)
30         d3 = AuthorDetail.objects.create(age=38, addr='深圳', phone=13967730001)
31         d2 = AuthorDetail.objects.filter(id=2).first()
32         d3 = AuthorDetail.objects.filter(id=3).first()
33         Author.objects.create(name='杨一', authorDetail_id=1)
34         Author.objects.create(name='杨二', authorDetail_id=d2.id)
35         Author.objects.create(name='杨三', authorDetail=d3)
36     if method == 'POST':
37         req = request.POST
38         print('req---->', req)
39         title = req.get('title').strip()
40         price = req.get('price').strip()
41         date = req.get('date').strip()
42         publish_id = req.get('publish_id').strip()
43         # get只能取到authors_id_list列表的最后一个值，getlist取整个authors_id_list列表
44         authors_id_lis = req.getlist('authors_id_list')
45         print('authors_id_lis------->', authors_id_lis)
46         if title and price and date and publish_id and authors_id_lis:
47             select_res = Book.objects.filter(title=title).exists()
48             if not select_res:
49                 publish_obj = Publish.objects.filter(id=publish_id).first()
50                 # res = Book.objects.create(title=title, price=price, pub_date=date, publish=publish_obj)
51                 res = Book.objects.create(title=title, price=price, pub_date=date, publish_id=publish_id)
52                 res.authors.add(*authors_id_lis)
53                 return redirect('/app01/book')
54             opt_res = '书籍【%s】已存在,请修改后提交！'%title
55         else:
56             opt_res = '输入不能为空,请修改后提交！'
57     publish_obj = Publish.objects.all()
58     author_obj = Author.objects.all()
59     return render(request, 'addbook.html', locals())
60 
61 
62 def update_book(request, num):
63     book_obj = Book.objects.filter(id=num).first()
64     publish_obj = Publish.objects.all()
65     author_obj = Author.objects.all()
66     if book_obj:
67         method = request.method
68         if method == 'POST':
69             req = request.POST
70             print('req---->', req)
71             title = req.get('title').strip()
72             price = req.get('price').strip()
73             date = req.get('date').strip()
74             publish_id = req.get('publish_id').strip()
75             # get只能取到authors_id_list列表的最后一个值，getlist取整个authors_id_list列表
76             authors_id_lis = req.getlist('authors_id_list')
77             print('authors_id_lis------->', authors_id_lis)
78             if title and price and date and publish_id and authors_id_lis:
79                 select_res = Book.objects.exclude(id=num).filter(title=title)
80                 if not select_res:
81                     Book.objects.filter(id=num).update(title=title, price=price, pub_date=date, publish_id=publish_id)
82                     # book_obj.authors.clear()
83                     # book_obj.authors.add(*authors_id_lis)
84                     book_obj.authors.set(authors_id_lis)  # 该方法等同于上面两个步骤
85                     return redirect('/app01/book')
86                 opt_res = '书籍【%s】已存在,请修改后提交！' % select_res[0].title
87             else:
88                 opt_res = '输入不能为空,请修改后提交！'
89         return render(request, 'updatebook.html', locals())
90     return redirect('/app01/book')
91 
92 
93 def delete_book(request, num=None):
94     book_obj = Book.objects.filter(id=num).first()
95     if book_obj:
96         book_obj.authors.clear()
97         book_obj.delete()
98     return redirect('/app01/book')

 

posted @ 2019-08-12 08:52  毛斯钢  阅读(207)  评论(0)  编辑  收藏  举报