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Apr 22nd, 2018
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  1. class FirstModel(db.Model):
  2. prop = db.IntegerProperty()
  3.  
  4. class SecondModel(db.Model):
  5. reference = db.ReferenceProperty(FirstModel)
  6.  
  7. obj1 = FirstModel()
  8. obj1.prop = 42
  9. obj1.put()
  10.  
  11. obj2 = SecondModel()
  12.  
  13. # A reference value is the key of another entity.
  14. obj2.reference = obj1.key()
  15.  
  16. # Assigning a model instance to a property uses the entity's key as the value.
  17. obj2.reference = obj1
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