pynamo saving override

pynamoDbSavingOverride.py

class Order2(Model):
  class Meta:
    table_name = ORDER_TABLE
    region = 'ap-southeast-1'
    dax_read_endpoints = ['longtermcluster.vuu7lr.clustercfg.dax.apse1.cache.amazonaws.com:8111']
    dax_write_endpoints = ['longtermcluster.vuu7lr.clustercfg.dax.apse1.cache.amazonaws.com:8111']
  ## keys
  ownerId=UnicodeAttribute()
  basketId=UnicodeAttribute()
  
  ## hash key
  orderId =UnicodeAttribute(hash_key = True)
  data = SchemaAttribute(schemaUrl=ORDERURL,path='/',null=True)
  
  
  # timestamps
  creationTime= NumberAttribute()
  lastEdited=NumberAttribute()
  
  #### indexes#####
  ownerIdIndex=OwnerIdIndex()
  basketIdIndex=BasketIdIndex()
  
  ##### default functions ####
  def __repr__(self):
    return yaml.dump(self.to_dict())
  
  #### saving ####
  def pullOutKeys(self):
    '''update the keys with data'''
    self.orderId = self.data['orderId']
    self.ownerId = self.data['ownerId']
    self.basketId = self.data['basketId']
    
  def recordTime(self):
    '''record last edited and creation time'''
    self.lastEdited = datetime.now().timestamp() # record last edited
    if not self.creationTime: # record creation time
      self.creationTime = datetime.now().timestamp()
    
  def save(self):
    self.recordTime()
    self.pullOutKeys()
      
    try: 
      super().save()
      return next(self.query(self.orderId))
    except ValidationError as e:
      raise ValidationError(f'failed validation \n {e}')

    except Exception as e:
      raise Exception(f'error saving id {self.orderId} {e}')
  ##### other functions ###    
  def to_dict(self):
    return self.data
  
  @classmethod
  def from_dict(cls, inputDict:dict):
    return cls(data = inputDict)