Django TabularInline，只有readonly_fields，但我的FK對象仍然顯示並可編輯

Question

我在管理員中創建一個只讀表格內聯，並且我無法擺脫狀態對象的此額外下拉列表。正如你所看到的，我只有3個readonly_fields，但是爲TaskStatus.status顯示了一個額外的字段，並且它是可編輯的。任何想法爲什麼？我確信我忽略了一些簡單的東西。

class TaskStatusInline(admin.TabularInline): 
    model = TaskStatus 
    extra = 0 

    readonly_fields = [ 
     'status_name', 
     "updated_by", 
     'timestamp' 
    ] 

    can_delete = False 

    def has_add_permission(self, request, obj=None): 
     return False 

    def status_name(self, obj): 
      return obj.status.name 

模型

class TaskStatus(models.Model): 
    class Meta: 
     ordering = ['-timestamp'] 

    status = models.ForeignKey('status') 
    task = models.ForeignKey('Task', related_name="task_status") 
    timestamp = models.DateTimeField(auto_now_add=True) 
    updated_by = models.ForeignKey(settings.AUTH_USER_MODEL, null=True, blank=True) 


class Status(models.Model): 
    class Meta: 
     unique_together = ['status', 'substatus'] 
     verbose_name_plural = "status" 
     ordering = ['code'] 

    name = models.CharField(max_length=50) 
    status = models.CharField(max_length=25) 
    substatus = models.CharField(max_length=25) 
    code = models.IntegerField() 

Answer 1

class TaskStatusInline(admin.TabularInline): 
    model = TaskStatus 
    extra = 0 
    fields = [ 
     'status_name', 
     'updated_by', 
     'timestamp' 
    ] 
    readonly_fields = [ 
     'status_name', 
     "updated_by", 
     'timestamp' 
    ]