1.多对多关系数据访问
models.py设置
from django.db import models # Create your models here.
sex_choices=(
('f','famale'),('m','male')
)
class User(models.Model):
name = models.CharField(max_length=30)
sex=models.CharField(max_length=1,choices=sex_choices)
def __unicode__(self):
return self.name class Author(models.Model):
name=models.CharField(max_length=30)
def __unicode__(self):
return self.name
class Book (models.Model):
name = models.CharField(max_length=30)
author=models.ManyToManyField(Author)
def __unicode__(self):
return self.name
views.py中调用
def index1(req):
aus = Author.objects.all()
books = Book.objects.all()
t= loader.get_template('index1.html')
c=Context({'aus':aus,'books':books})
return HttpResponse(t.render(c))
templates中模板的设置
<body>
{% for book in books %}
<h1>书籍:{{book}}<br></h1>
{% for au in book.author.all %}
作者: {{au}}
<br/>
{%endfor%}
{% endfor%} </body>
输出的结果:
