[django]定义django admin的list_display

有三张表，其中表customerGroup跟表discount是一对一关系，跟表product是多对多关系。

models.py

class customerGroup(models.Model):
    name = models.CharField(max_length=100)
    discount = models.ForeignKey("discount")
    products = models.ManyToManyField("product",blank=True)
    
    def __unicode__(self):
        return self.name
    
class product(models.Model):
    name = models.CharField(max_length=100)
        
    def __unicode__(self):
        return self.name

class discount(models.Model):
    name=models.CharField(max_length=30)
    discountValue = models.DecimalField(max_digits=3,decimal_places=2)
    
    def __unicode__(self):
        return self.name

定义list_display的显示内容：

models.py中添加如下代码：

from django.contrib import admin

class customerGroupAdmin(admin.ModelAdmin):
    list_display=('name','discountValue','product_list','comment')
    filter_horizontal = ('products',)
    
    def discountValue(self,obj):
        return obj.discount.discountValue
    
    def product_list(self,obj):
        products=""
        for product in obj.products.all():
            products=product.name+","+products    
        return products
    
admin.site.register(customerGroup,customerGroupAdmin)

页面显示如下图：

参考文档：https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.list_display