如何按主键和其他条件更新项目？

Question

I am trying to update item by email (HASH PK), id and verifyToken . My query looks like this:

params =
  TableName: 'users'
  Key:
    email:
      S: 'example@email.com'
  AttributeUpdates:
    verified:
      Action: 'PUT'
      Value:
        BOOL: true
    verifyToken:
      Action: 'DELETE'
  ExpressionAttributeValues:
    ':id': { S: '123' }
    ':verifyToken': { S: 'XXX' }
  ConditionExpression: 'id = :id and verifyToken = :verifyToken'

dynamodb.updateItem(params)

In other words I want to update Item where email = 'example@email.com' AND id = '123' AND verifyToken = 'XXX', but I am getting following error:

Can not use both expression and non-expression parameters in the same request: 
Non-expression parameters: {AttributeUpdates} 
Expression parameters: {ConditionExpression}

Answer 1

You are combining legacy parameters ( AttributeUpdates ), which are only there for backwards compatibility, with expression parameters ( ConditionExpression ). As the error states, you cannot do that.

You need to use an UpdateExpression in conjunction with your ConditionExpression .

It would be something like this. You may need to use expression attribute names/values in the UpdateExpression :

ConditionExpression: 'id = :id and verifyToken = :verifyToken'
UpdateExpression: 'SET verified = true, REMOVE verifyToken'

See this documentation for more information on update expressions