Django管理外鍵

Question

我有2個表如下： -

class Package(models.Model): 

    '''Model to represent details of the packae booking''' 
    date_of_inquiry = models.DateField(blank=True, null=True) 
    agent_name = models.CharField(max_length=200, blank=True) 
    type_of_booking = models.ForeignKey(TypeOfBooking, blank=True, null=True) 
    no_of_pax = models.IntegerField(null=True) 
    source_of_inquiry = models.CharField(max_length=100, blank=True) 
    business_vendor = models.CharField(max_length=100, blank=True) 
    travel_date = models.DateField(null=True, blank=True) 
    reply_date = models.DateField(null=True, blank=True) 
    client_name = models.CharField(max_length=500, blank=True) 
    client_email = models.EmailField(blank=True) 
    client_contacts = models.CharField(max_length=200, blank=True) 
    inquiry_assigned_to = models.ForeignKey(User, blank=True, null=True) 

    def __unicode__(self): 
     return str(self.date_of_inquiry) + " " + self.client_name 


class FollowUp(models.Model): 

    '''Model to represent follow-ups of the clients''' 
    follow_up_date = models.DateField(blank=True, null=True) 
    remarks = models.TextField(max_length=500, blank=True) 
    package = models.ForeignKey(Package, blank=True, null=True) 
    status_inquiry = models.ForeignKey(StatusInquiry, blank=True, null=True) 
    followup_done_by = models.ForeignKey(User, blank=True, null=True) 

    def __unicode__(self): 
     return str(self.follow_up_date) + " " + self.status_inquiry.status_name 

我要訪問的包在管理面板中有下列屬性中顯示一個列表視圖： -

list_display（ 'AGENT_NAME'，' date_of_inquiry'，##########） 注意：##############字段應該是同一包的最近跟進狀態。

這怎麼能實現？將感謝您的答案。

Answer 1

您可以在類Package中的模型中定義一個函數。既然你需要知道的狀態，你可以找到最近的後續使用狀態

def get_status_name(self): 
    a = self.followup_set.latest('follow_up_date') 
    return a.status.status_name