Question

我有一家书店，我想添加几位作者来添加一本新书。我该怎么办？我的代码只接受一位作者

class Authors(models.Model):
    first_name = models.CharField(max_length=200)
    last_name = models.CharField(max_length=200)

class Book(models.Model):
    title = models.CharField(max_length=200)
    topic = models.CharField(max_length=200)
    author = models.ForeignKey(Authors, on_delete = models.DO_NOTHING)

Answer 1

您将关系设为ManyToManyField [Django-doc]，例如：

class Author(models.Model):
    first_name = models.CharField(max_length=200)
    last_name = models.CharField(max_length=200)

class Book(models.Model):
    title = models.CharField(max_length=200)
    topic = models.CharField(max_length=200)
    authors = models.ManyToManyField(Author)

例如，您可以创建Book和Author，例如：

sona = Author.objects.create(first_name='Sona', last_name='Charaipotra')
dhon = Author.objects.create(first_name='Dhonielle', last_name='Clayton')

book1 = Book.objects.create(title='Tiny Pretty Things', topic='dance')
book1.authors.add(sona, dhon)

注意：模型通常具有单数名称，因此Author而不是 ~~Authors~~ 。

一对多django添加作者为书

1 个答案: