Python 更改django admin中的列名称

在django管理站点中，我看到我的模型字段名很短，比如dob（表示出生日期等）。如何自定义管理页面以显示自定义字段名。我的模型和admin.py如下，我搜索并发现我必须使用简短的描述，但不确定在哪里使用或如何实现它

class Project(models.Model):
        name = models.CharField(max_length = 100)
        description = models.CharField(max_length = 254)

        def __unicode__(self):
             return u"%s" % (self.name)

class Employee(models.Model):
     name = models.CharField(max_length = 100)
     dob = models.DateField()
     doj = models.DateField()
         mobile=models.IntegerField(max_length = 12)
         email = models.EmailField(max_length=50)
     bill = models.BooleanField(db_index=True,default=False)
     proj = models.ForeignKey(Project)

        def custom_field_name(self):
          return self.dob
        custom_field_name.short_description = 'Date Of Birth'

     def __unicode__(self):
        return u"%s" % (self.name)

admin.py如下所示

 class EmployeeAdmin(admin.ModelAdmin):
    search_fields = ['name']
        list_display = ('name','bill','mobile','email')
        list_filter = ('bill','proj')

admin.site.register( Employee, EmployeeAdmin )
admin.site.register( Project )

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如本文所述：

您可以为模型（）中的字段设置显示名称

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这样做意味着此模型的所有表单（在管理和网站前端）都将显示您输入的文本作为字段标签。

我添加了简短描述，也检查了我编辑的问题。它仍然没有反映在管理页面。我是否还需要在admin.py中添加一些更改？

class Question(models.Model):
    # ...
    def was_published_recently(self):
        return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
    was_published_recently.admin_order_field = 'pub_date'
    was_published_recently.boolean = True
    was_published_recently.short_description = 'Published recently?'

class Employee(models.Model):
     name = models.CharField(max_length = 100)
     dob = models.DateField('date of birth')
     doj = models.DateField()
     mobile=models.IntegerField(max_length = 12)
     email = models.EmailField(max_length=50)
     bill = models.BooleanField(db_index=True,default=False)
     proj = models.ForeignKey(Project, verbose_name='project')