准备工作参考单表，这里只贴出关键代码,项目结构与基于单表的木有区别.
1.url控制器
urls.py
1: from django.contrib import admin
2: from django.urls import path,re_path
3: from app01 import views
4:
5: urlpatterns = [
6: path('admin/', admin.site.urls),
7: path('book/add', views.add_book),
8: path('book/search', views.search_book),
9: re_path('book/(\d+)/change', views.change_book),
10: re_path('book/(\d+)/delete', views.delete_book),
11: ]
2.模型层
models.py
1: from django.db import models
2: # Create your models here.
3: class Author(models.Model):
4: nid = models.AutoField(primary_key=True)
5: name = models.CharField(max_length=32)
6: age = models.IntegerField()
7: class Publish(models.Model):
8: nid = models.AutoField(primary_key=True)
9: name = models.CharField(max_length=32)
10: city = models.CharField(max_length=32)
11: email = models.EmailField()
12: class Book(models.Model):
13: nid = models.AutoField(primary_key=True)
14: title = models.CharField(max_length=32)
15: publishDate = models.DateField()
16: price = models.DecimalField(max_digits=5, decimal_places=2)
17: publish = models.ForeignKey(to="Publish", to_field="nid", on_delete=models.CASCADE)
18: authors = models.ManyToManyField(to="Author",)
19:
3.视图层
views.py
1: from django.shortcuts import render, HttpResponse, redirect
2:
3: # Create your views here.
4: from .models import Publish, Author, Book
5:
6:
7: def add_book(request):
8:
9: if request.method == "POST":
10: title = request.POST.get("title")
11: price = request.POST.get("price")
12: pub_date = request.POST.get("pub_date")
13: publish_id = request.POST.get("publish_id")
14: authors_id_list = request.POST.getlist("authors_id_list")
15: # print(authors_id_list)
16:
17: book_obj = Book.objects.create(title=title, price=price, publishDate=pub_date, publish_id=publish_id)
18: book_obj.authors.add(*authors_id_list)
19:
20: return redirect("/book/search")
21:
22: publish_list = Publish.objects.all()
23: author_list = Author.objects.all()
24: return render(request, "add_book.html", {"publish_list": publish_list, "author_list": author_list})
25:
26:
27: def search_book(request):
28:
29: book_list = Book.objects.all()
30:
31: return render(request, "search_book.html", {"book_list": book_list})
32:
33:
34: def change_book(request, edit_book_id):
35:
36: edit_book_obj = Book.objects.filter(pk=edit_book_id)[0]
37: if request.method == "POST":
38: title = request.POST.get("title")
39: price = request.POST.get("price")
40: pub_date = request.POST.get("pub_date")
41: publish_id = request.POST.get("publish_id")
42: authors_id_list = request.POST.getlist("authors_id_list")
43:
44: Book.objects.filter(pk=edit_book_id).update(title=title, price=price, publishDate=pub_date, publish_id=publish_id)
45: # edit_book_obj.authors.clear()
46: # edit_book_obj.authors.add(*authors_id_list)
47: # 同上的写法
48: edit_book_obj.authors.set(authors_id_list)
49:
50: return redirect("/book/search")
51:
52: publish_list = Publish.objects.all()
53: author_list = Author.objects.all()
54: return render(request, "editbook.html", {"edit_book_obj": edit_book_obj, "publish_list": publish_list, "author_list": author_list})
55:
56:
57: def delete_book(request, delete_book_id):
58:
59: Book.objects.filter(pk=delete_book_id).delete()
60:
61: return redirect("/book/search")
4.模板层
templates
add_book.html
1: <!DOCTYPE html>
2: <html lang="en">
3: <head>
4: <meta charset="UTF-8">
5: <title>添加页面</title>
6: <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
7: </head>
8: <body>
9: <div>
10: <h3>添加书籍</h3>
11: </div>
12:
13: <div class="container">
14: <div class="row">
15: <div class="col-md-6 col-md-offset-3">
16: <form action="" method="post">
17: {% csrf_token %}
18: <div class="from-group">
19: <label for="">名称</label>
20: <input type="text" name="title" class="form-control">
21: </div>
22: <div class="from-group">
23: <label for="">价格</label>
24: <input type="text" name="price" class="form-control">
25: </div>
26: <div class="from-group">
27: <label for="">出版日期</label>
28: <input type="date" name="pub_date" class="form-control">
29: </div>
30: <div class="from-group">
31: <label for="">出版社</label>
32: <select name="publish_id" id="" class="form-control">
33: {% for publish in publish_list %}
34: <option value="{{ publish.pk }}">{{ publish.name }}</option>
35: {% endfor %}
36: </select>
37: </div>
38: <div class="from-group">
39: <label for="">作者</label>
40: <select type="text" name="authors_id_list" id="" multiple class="form-control">
41: {% for author in author_list %}
42: <option value="{{ author.pk }}">{{ author.name }}</option>
43: {% endfor %}
44: </select>
45: </div>
46: <div>
47: <input type="submit" class="btn btn-default">
48: </div>
49: </form>
50: </div>
51: </div>
52: </div>
53: </body>
54: </html>
editbook.html
1: <!DOCTYPE html>
2: <html lang="en">
3: <head>
4: <meta charset="UTF-8">
5: <title>添加页面</title>
6: <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
7: </head>
8: <body>
9: <div>
10: <h3>编辑书籍</h3>
11: </div>
12:
13: <div class="container">
14: <div class="row">
15: <div class="col-md-6 col-md-offset-3">
16: <form action="" method="post">
17: {% csrf_token %}
18: <div class="from-group">
19: <label for="">名称</label>
20: <input type="text" name="title" class="form-control" value="{{ edit_book_obj.title }}">
21: </div>
22: <div class="from-group">
23: <label for="">价格</label>
24: <input type="text" name="price" class="form-control" value="{{ edit_book_obj.price }}">
25: </div>
26: <div class="from-group">
27: <label for="">出版日期</label>
28: <input type="date" name="pub_date" class="form-control" value="{{ edit_book_obj.publishDate|date:"Y-m-d" }}">
29: </div>
30: <div class="from-group">
31: <label for="">出版社</label>
32: <select name="publish_id" id="" class="form-control">
33: {% for publish in publish_list %}
34: {% if edit_book_obj.publish == publish %}
35: <option selected value="{{ publish.pk }}">{{ publish.name }}</option>
36: {% else %}
37: <option value="{{ publish.pk }}">{{ publish.name }}</option>
38: {% endif %}
39: {% endfor %}
40: </select>
41: </div>
42: <div class="from-group">
43: <label for="">作者</label>
44: <select type="text" name="authors_id_list" id="" multiple class="form-control">
45: {% for author in author_list %}
46: {% if author in edit_book_obj.author.all %}
47: <option selected value="{{ author.pk }}">{{ author.name }}</option>
48: {% else %}
49: <option value="{{ author.pk }}">{{ author.name }}</option>
50: {% endif %}
51: {% endfor %}
52: </select>
53: </div>
54: <div>
55: <input type="submit" class="btn btn-default">
56: </div>
57: </form>
58: </div>
59: </div>
60: </div>
61: </body>
62: </html>
search_book.html
1: <!DOCTYPE html>
2: <html lang="en">
3: <head>
4: <meta charset="UTF-8">
5: <title>查看页面</title>
6: <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
7: </head>
8: <body>
9: <div>
10: <h3>查看书籍</h3>
11: </div>
12: <div>
13: <h3>添加书籍</h3>
14: <a href="/book/add" class="btn btn-info">添加</a>
15: </div>
16: <div class="container">
17: <div class="row">
18: <div class="col-md-8 col-md-offset-3">
19: <table class="table table-bordered table-hover table-striped" >
20: <thead>
21: <tr>
22: <th>编号</th>
23: <th>书籍名称</th>
24: <th>价格</th>
25: <th>出版日期</th>
26: <th>出版社</th>
27: <th>作者</th>
28: <th>操作</th>
29: </tr>
30: </thead>
31: <tbody>
32: {% for book in book_list %}
33: <tr>
34: <td>{{ forloop.counter }}</td>
35: <td>{{ book.title }}</td>
36: <td>{{ book.price }}</td>
37: <td>{{ book.publishDate|date:"Y-m-d" }}</td>
38: <td>
39: {{ book.publish.name }}
40: </td>
41: <td>
42: {% for author in book.authors.all %}
43: {% if forloop.last %}
44: <span>{{ author.name }}</span>
45: {% else %}
46: <span>{{ author.name }}.</span>
47: {% endif %}
48: {% endfor %}
49: </td>
50: <td>
51: <a href="/book/{{ book.pk }}/change" class="btn btn-warning">编辑</a>
52: <a href="/book/{{ book.pk }}/delete" class="btn btn-danger">删除</a>
53: </td>
54: </tr>
55: {% endfor %}
56: </tbody>
57: </table>
58: </div>
59: </div>
60: </div>
61: </body>
62: </html>