How to display an attribute of a foreign key in the Django admin page

Question

I want to display the level field of the category to which the product is related on the object\'s admin page.

    class Category(m         


        

Answer 1

In your admin.py file

class ProductAdmin(admin.ModelAdmin):
    list_display = ('name', 'category__level', 'category')

admin.site.register(Product, ProductAdmin)

Try this.............

Answer 2

The simplest way is to put the level of the Category into the __unicode__ method:

class Category(models.Model):
    name = models.CharField(max_length=50, default=False)
    level = models.IntegerField(help_text="1, 2 ,3 or 4")

    def __unicode__(self):
        return u'%s [%d]' % (self.name, self.level)

So the select box will show it.

Answer 3

Define a method on the ModelAdmin class which returns the value of the related field, and include that in list_display.

class ProductAdmin(admin.ModelAdmin):
    list_display = ('name', 'level')
    model = Product

    def level(self, obj):
        return obj.category.level