我的models.py如下:
from django.db import models
class Book(models.Model):
book_id=models.AutoField(primary_key=True,unique=True)
book_name=models.CharField(max_length=30)
author_name=models.CharField(max_length=30)
publisher_name=models.CharField(max_length=40)
def __unicode__(self):
return "%d %s %s %s" % (self.book_id,self.book_name, self.author_name,self.publisher_name)
class Author(models.Model):
author_id=models.AutoField(primary_key=True)
first_name = models.CharField(max_length=30)
last_name = models.CharField(max_length=40)
email = models.EmailField()
age=models.IntegerField()
book=models.ForeignKey(Book)
def __unicode__(self):
return u'%d %s %s' % (self.author_id,self.first_name, self.last_name)
和我的views.py是这样的:
def index(request):
books = Book.objects.all()
context={'books':books}
return render(request,'index.html', context)
上面的views.py显示了Book类中的内容,但是我无法在author表中显示内容。我的要求是显示合并在一个页面中的两个内容。请帮我这样做。
答案 0 :(得分:2)
嗯,看起来你没有正确设置你的模型。如果没有提供,则Django会处理id,因此您不需要author_id=models.AutoField(primary_key=True)
。另外,一本书不应该有作者,不是作者有书吗?如果您正确执行此操作,则也不需要author_name=models.CharField(max_length=30)
,因为您的作者模型的外键具有其名称。
正确设置后,可以非常轻松地访问模板中的数据。例如,您可以在模板中使用book.author.first_name
来获取图书作者的姓名。
from django.db import models
class Author(models.Model):
first_name = models.CharField(max_length=30)
last_name = models.CharField(max_length=40)
email = models.EmailField()
age = models.IntegerField()
def __unicode__(self):
return u'%d %s %s' % (self.pk, self.first_name, self.last_name)
class Book(models.Model):
name = models.CharField(max_length=30)
author = models.ForeignKey(Author)
publisher_name = models.CharField(max_length=40)
def __unicode__(self):
return u"%d %s %s %s" % (self.pk, self.name, self.author.name, self.publisher_name)
{% for book in books %}
...
{% for author in book.author_set %}
...
{% endfor %}
{% endfor %}
答案 1 :(得分:1)
<强> models.py 强>
class Book(models.Model):
book_name=models.CharField(max_length=30)
author_name=models.CharField(max_length=30)
publisher_name=models.CharField(max_length=40)
author=models.ForeignKey(Author)
def __unicode__(self):
..........
class Author(models.Model):
first_name = models.CharField(max_length=30)
last_name = models.CharField(max_length=40)
email = models.EmailField()
age=models.IntegerField()
def __unicode__(self):
........
def books(self):
return Book.objects.filter(author=self)
<强> views.py 强>
def index(request):
authors = Author.objects.all()
context={'authors':authors}
return render(request,'index.html', context)
<强>模板强>
{% for author in authors %}
Author: {{author.first_name}} {{author.last_name}}<br/>
Email: {{author.email}}
Age: {{author.age}}
Books:
{% for book in author.books %}
.......
{% endfor %}
{% endfor %}