Python - Django - 添加作者
在 book_list.html 的页面下方加上 “添加作者” 的链接
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>作者列表</title>
</head>
<body>
<h1>作者列表</h1>
<table border="1">
<thead>
<tr>
<th>#</th>
<th>id</th>
<th>名字</th>
<th>书籍</th>
</tr>
</thead>
<tbody>
{% for author in author_list %}
<tr>
<td>{{ forloop.counter }}</td>
<td>{{ author.id }}</td>
<td>{{ author.name }}</td>
<td>
{% for book in author.book.all %}
{% if forloop.last %}
{{ book.title }}
{% else %}
{{ book.title }} |
{% endif %}
{% endfor %}
</td>
</tr>
{% endfor %}
</tbody>
</table>
<a href="/add_author/">添加书籍</a>
</body>
</html>
运行效果：
在 urls.py 处添加 “添加作者” 的 url 对应关系
from django.conf.urls import url
from django.contrib import admin
from app01 import views
urlpatterns = [
# 出版社
url(r'^publisher_list/', views.publisher_list),
url(r'^add_publisher/', views.add_publisher),
url(r'^del_publisher/', views.del_publisher),
url(r'^edit_publisher/', views.edit_publisher),
# 书籍
url(r'^book_list/', views.book_list),
url(r'^add_book/', views.add_book),
url(r'^del_book/', views.del_book),
url(r'^edit_book/', views.edit_book),
# 作者
url(r'^author_list/', views.author_list),
url(r'^add_author/', views.add_author),
]
创建 add_author.html 添加作者页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>添加作者</title>
</head>
<body>
<h1>添加作者</h1>
<form action="/add_author/" method="post">
<p>
作者姓名：<input type="text" name="author_name">
</p>
<p>
书籍：
<select multiple name="books">
{% for book in book_list %}
<option value="{{ book.id }}">{{ book.title }}</option>
{% endfor %}
</select>
</p>
<p>
<input type="submit" value="提交">
</p>
</form>
</body>
</html>
最后在 views.py 加上添加作者的函数
from django.shortcuts import render, redirect, HttpResponse
from app01 import models
# 展示出版社列表
def publisher_list(request):
pass
# 添加新的出版社
def add_publisher(request):
pass
# 删除出版社
def del_publisher(request):
pass
# 编辑出版社
def edit_publisher(request):
pass
# 展示书籍列表
def book_list(request):
pass
# 添加书籍
def add_book(request):
pass
# 删除书籍
def del_book(request):
pass
# 编辑书籍
def edit_book(request):
pass
# 作者列表
def author_list(request):
# 查询所有作者
all_author = models.Author.objects.all()
return render(request, "author_list.html", {"author_list": all_author})
# 添加作者
def add_author(request):
if request.method == "post":
# 取得提交的数据
new_author_name = request.POST.get("author_name")
# 如果提交的数据是多个值的话用 getlist
books = request.POST.getlist("books")
# 创建作者
new_author_obj = models.Author.objects.create(name=new_author_name)
# 把新作者和书籍建立对应关系，自动提交
new_author_obj.book.set(books)
# 跳转到作者列表页面，查看是否添加成功
return redirect("/author_list/")
# 查询所有的书籍
all_books = models.Book.objects.all()
return render(request, "add_author.html", {"book_list": all_books})
运行结果：
提交后
再看一下数据库
