Django Admin：如何以内联方式显示在模型上定义的属性？ [英] Django Admin: how to display properties defined on model in an inline?

问题描述

这是此问题。如何在父级的内联中显示在子模型上定义的属性？为了说明，我有这个模型：

This is a follow-up to this question. How do I display properties defined on a child model in an inline on the parent? To illustrate, I have this model:

class UserProfile(models.Model):
    user = models.ForeignKey(User, unique=True, primary_key=True, related_name='profile')
    ...
    @property
    def age(self):
        if self.birthday is None:
            return None

        td = datetime.date.today() - self.birthday
        return td.days / 365

问题是：如何在用户内联中显示年龄？这就是我所拥有的：

Question is: how do I show 'age' in an inline on User? This is what I have:

class UserProfileInline(admin.StackedInline):
    model = UserProfile
    fk_name = 'user'
    max_num = 1
    fieldsets = [
        ('Demographics', {'fields': ['birthday', 'age']}),
    ]

我已经尝试过一些类似的事情，包括 age（），定义了一个 get_age它们会导致此错误的某些版本：

I've tried a few things like this, including 'age()', defining a 'get_age' getter for the Inline, etc. They result in some version of this error:

ImproperlyConfigured: 'UserProfileInline.fieldsets[1][1]['fields']' refers to field 'age' that is missing from the form.

推荐答案

将字段添加到 readonly_fields 元组。

请注意，这仅适用于Django 1.2 +。

Note this only works in Django 1.2+.

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