Question

如何从ManyToMany字段返回对象？或者如何访问与Book相关的作者？提前致谢。我的models.py是

class Author(models.Model):
    first_Name = models.CharField(max_length=100)
    last_Name = models.CharField(max_length=100)

    def __unicode__(self):
        return 'Author: ' + self.first_Name + ' ' + self.last_Name

class Book(models.Model):
    title = models.CharField(max_length=200)
    author = models.ManyToManyField('Author')

    def __unicode__(self):
        return 'Book: ' + self.title

Answer 1

您可以访问Book来获取Author的{{1}}：

book_set

同样，您可以通过访问Author.get(first_Name="Someone").book_set.all() # would return a list of all books Author.get(first_Name="Someone").book_set.get(...) # would a book的{{1}}变量来获取作者：

author

等

返回ManyToMany字段

1 个答案: