多对多页面不能保存，提示『请选择列表中的一项』才能保存

[liuts]

添加xadmin后多对多页面不能保存，提示『请选择列表中的一项』才能保存，原版的django admin没有这个问题。

复现步骤： 1，建立下面的modles.py `class Author(models.Model): name = models.CharField(max_length=100,null=True) def str(self): return self.name

__unicode__ = __str__

class Book(models.Model): title = models.CharField(max_length=100,null=True) name=models.CharField(max_length=100,null=True) authors = models.ManyToManyField(Author,null=True)

def __str__(self):
    return self.title

__unicode__ = __str__`

2，在admin中中代码 `

@xadmin.sites.register(Author) class AuthorAdmin(object): # inlines = [AuthorshipInline] save_as = True

@xadmin.sites.register(Book) class BookAdmin(object): # inlines = [AuthorshipInline] filter_horizontal = ('authors',) style_fields = {'authors': 'm2m_transfer'} search_fields = ['title','authors__name','name'] # search_fields = ["nianji__name"] list_filter = ('title','authors__name','name') # ??? save_as = True`