Django admin:搜索外键对象，而不是?[英]Django admin: search for foreign key objects rather than ?

My model looks like this:

我的模型是这样的:

class Asset(models.Model):
    serial_number = models.CharField(max_length=100, unique=True)
    asset_tag = models.CharField(max_length=100, unique=True)

class WorkOrder(models.Model):
    asset = models.ForeignKey(Asset)
class A