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
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