old_contents: class Data_Toko(models.Model):
    ....
  
  class Pengiriman(models.Model):
  	property = models.ForeignKey(Data_Toko, related_name='pengiriman')
  	metode_pengiriman = models.CharField(max_length=200, default='JNE', blank=True, null=True, help_text='Isikan Pengiriman yang tersedia, contoh: JNE')
  
  
  >>> a = Pengiriman.objects.all()
  >>> a
  [<Pengiriman: Pengiriman object>, <Pengiriman: Pengiriman object>]
  >>> 
  >>> from appearance.models import Pengiriman
  >>> a = Pengiriman.objects.all()
  >>> print ([p.metode_pengiriman for p in a])
  [u'Tiki', u'Pos Indonesia']
  >>> 
  
new_contents: #https://docs.djangoproject.com/en/dev/topics/db/queries/#caching-and-querysets
  
  class Data_Toko(models.Model):
    ....
  
  class Pengiriman(models.Model):
  	property = models.ForeignKey(Data_Toko, related_name='pengiriman')
  	metode_pengiriman = models.CharField(max_length=200, default='JNE', blank=True, null=True, help_text='Isikan Pengiriman yang tersedia, contoh: JNE')
  
  
  >>> a = Pengiriman.objects.all()
  >>> a
  [<Pengiriman: Pengiriman object>, <Pengiriman: Pengiriman object>]
  >>> 
  >>> from appearance.models import Pengiriman
  >>> a = Pengiriman.objects.all()
  >>> print ([p.metode_pengiriman for p in a])
  [u'Tiki', u'Pos Indonesia']
  >>> 
  
subject: Update get-relation-foreign-objects.py