将客户端计算字段添加到django admin [英] Adding client side calculated fields to django admin

问题描述

说我有一个像这样的模型:

Say I've got a model like so:

class Spam(models.Model):
    a = models.IntegerField()
    b = models.IntegerField()

在管理员创建/编辑表单上.我想添加一个不可编辑的字段"c"，其中将包含在a和b中输入的所有内容的总和.

On the admin create/edit form. I want to add a non-editable field "c", that will contain the sum of whatever has been entered in a and b.

关于如何完成此任务，我有很多想法，但听起来都不是很好.

I have a boatload of ideas on how to accomplish this, and none of them sound very good.

有人能指出我正确的方向吗?

Can anyone point me in the right direction?

推荐答案

您可以使用

You can do it with ModelAdmin.readonly_fields

class SpamAdmin(admin.ModelAdmin):
    readonly_fields = ('get_c',)
    fields = ('a', 'b', 'get_c')

    def get_c(self, obj):
        return obj.a + obj.b

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