如何让Django Admin呈现外键值而不是Object对象

Question

在查看Django 1.8中的Admin页面时，我对如何正确引用外键值感到有些失落。

我得到了什么：

请注意，外键在左列中正确显示，但在右侧不显示（用于验证），也不会在您单击其中一个记录时显示，这是我要求它显示的位置。

我想要什么：

我希望第二张图片显示4147128而不是WorldEaseConsignee object。

代码

admin.py

from django.contrib import admin
from .models import WorldEaseConsignee, WorldEaseInvoice

class WorldEaseConsigneeAdmin(admin.ModelAdmin):
    list_display = (
        'order_number',
    )

class WorldEaseInvoiceAdmin(admin.ModelAdmin):

    @staticmethod
    def get_order_number(obj):
        return obj.order_number.order_number

    list_display = (
        'get_order_number', 'order_number_id'
    )

    search_fields = [
        'order_number__order_number',
    ]

admin.site.register(WorldEaseConsignee, WorldEaseConsigneeAdmin)
admin.site.register(WorldEaseInvoice, WorldEaseInvoiceAdmin)

models.py subset

class WorldEaseInvoice(models.Model):
    class Meta:
        verbose_name = 'WorldEase Invoice List'
        verbose_name_plural = 'WorldEase Invoice List'
        unique_together = ('order_line', 'order_number')

    order_number = models.ForeignKey(
        WorldEaseConsignee,
        to_field='order_number',
    )

    def __unicode__(self):
        return self.name

class WorldEaseConsignee(models.Model):
    class Meta:
        verbose_name = 'WorldEase Consignee List'
        verbose_name_plural = 'WorldEase Consignee List'

    order_number = models.IntegerField(
        null=False,
        blank=False,
        default=0,
        unique=True,
    )

    def __unicode__(self):
        return self.order_number # I've also tried self.name

Answer 1

由于您使用的是Python 3，因此您应该定义__str__个方法，而不是__unicode__。