from django.db import models

class parent(models.Model):
	name = models.CharField()

class childA(models.Model):
	parent = models.ForeignKey(parent)
	some_field = models.CharField()

class childB(models.Model):
	parent = models.ForeignKey(parent)
	some_other_field = models.CharField()
	some_field = #How to tie to some_field (multiple) from childA with same parent as childB's?