views：
#定义新增书功能：
def add_book(request):
if request.method == "POST":
book_name = request.POST.get("book_name")
pub_id = request.POST.get("pub_id")
#插入数据库：
# models.Book.objects.create(name=book_name,pub=models.Publisher.objects.get(pk=pub_id))
obj = models.Book.objects.create(name=book_name,pub_id=pub_id)
return redirect("/book/")
#查询所有的出版社：
add_pubs = models.Publisher.objects.all()
return render(request,"add_book.html",{"add_pubs":add_pubs})
add_html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="" method="post">
<p>
书名：<input type="text" name="book_name">
</p>
<p>
出版社：
<select name="pub_id" id="">
{% for pub in add_pubs %}
<option value="{{ pub.pk }}">{{ pub.name }}</option>
{% endfor %}
</select>
</p>
<button>提交</button>
</form>
</body>
</html>
展示书views：
#定义展示书功能：
def book(request):
#查询所有书籍：
all_books = models.Book.objects.all()
# for book in all_books:
# print(book)
# print(book.id)
# print(book.pk)
# print(book.pub_id) #所关联的出版社对象的id 对象.外键_id
# print(book.pub) #所关联的出版社对象 对象.外键
return render(request,"book.html",{"all_books":all_books})
展示书HTML：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<table border="1">
<thead>
<tr>
<th>序号</th>
<th>id</th>
<th>书名</th>
<th>出版社名字</th>
<th>操作</th>
</tr>
</thead>
<tbody>
{% for book in all_books %}
<tr>
<td>{{ forloop.counter }}</td>
<td>{{ book.pk }}</td>
<td>{{ book.name }}</td>
<td>{{ book.pub }}</td>
<td></td>
</tr>
{% endfor %}
</tbody>
</table>
</body>
</html>