Dynamo db Error添加问题：{InvalidParameterType：Expected params.Item ['options']。S是一个字符串

Question

I am using node js and my query to add an item is like this

{
 "TableName":"testquestions",
 "Item":{"testid":{"S":"[object Object]"},
 "questionid":{"S":"31478b20-d2a1-11e8-b6a9-756540a0ef19"},
"answer":{"S":"2"},
 "options":{"S":["a. Panel1","b. panel2","c. panel3","d. panel4","e.panel5"]},
  "questiontxt":{"S":"Googler"}
}

And my node js query is this.

dynamodb.putItem(testq, function(err, testqdata) {
 if(err){
//Somthing
 }else{
 //Somthing
}

But this shows an error

Error adding question: { 
InvalidParameterType: Expected params.Item['options'].S to be a string
}

How can I execute this query "options":{"S":["a. Panel1","b. panel2","c. panel3","d. panel4","e.panel5"]}, This is an object

Answer 1

You are using S ( String ), but trying to put Set/List of Strings , so try SS ( String Set ) instead.

"options": {"SS": ["a. Panel1", "b. panel2"]}

Read more about String Set