Django models Django模型-使用ManyToManyField add()方法时出现问题
我在使用下面的add()方法时遇到问题Django models Django模型-使用ManyToManyField add()方法时出现问题,django-models,Django Models,我在使用下面的add()方法时遇到问题 class JobRecord(models.Model): """JobRecord model""" project = models.ForeignKey(Project) date = models.DateField() supervisor = models.ForeignKey(User, related_name='supervisor
class JobRecord(models.Model):
"""JobRecord model"""
project = models.ForeignKey(Project)
date = models.DateField()
supervisor = models.ForeignKey(User, related_name='supervisor_set')
operators = models.ManyToManyField(User, related_name='operators_set', help_text='Include the supervisor as an operator here also.')
vehicles = models.ManyToManyField(Vehicle, blank=True, null=True)
def __unicode__(self):
return u"%s - %s" % (self.project.name, self.date.strftime('%b %d'))
def save(self, **kwargs):
super(JobRecord, self).save(**kwargs)
if not self.operators.filter(pk=self.supervisor.pk):
self.operators.add(self.supervisor)
print self.operators.values()
奇怪的是,print self.operators.values()
行显示了正确的值,但是,在检查django admin中的记录时,主管没有被保存为操作员
即
我在这里需要什么样的魔法?我随机发现了这个问题,所以可能不是真的,但你应该先保存self.supervisor:
def save(self, **kwargs):
super(JobRecord, self).save(**kwargs)
if not self.operators.filter(pk=self.supervisor.pk):
self.supervisor.save()
self.operators.add(self.supervisor)
print self.operators.values()
我也有同样的问题。我甚至设置了一个post_save信号,但无法使add()方法保持不变。我的许多人都没有使用默认的自动编号id。我想知道这是否与此有关。
def save(self, **kwargs):
super(JobRecord, self).save(**kwargs)
if not self.operators.filter(pk=self.supervisor.pk):
self.supervisor.save()
self.operators.add(self.supervisor)
print self.operators.values()