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DynamoDB Scan FilterExpression item IN list
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const listToObjectMappings = (list) => { | |
let x = {} | |
for (var i=0; i<list.length; i++){ | |
x[':' + i.toString()] = list[i] | |
} | |
return x | |
} | |
let statuses = ['available', 'in-transit', 'delivered'] | |
let mappings = listToObjectMappings(statuses) | |
let type = 'delivery' // type is just to demonstrate the use of Object.assign to build the 'ExpressionAttributeValues' | |
let joined = Object.keys(mappings).join(); // string: ":available, :in-transit, :delivered" | |
query = { | |
FilterExpression: '#type = :type AND #stat IN (' + joined + ')', | |
ExpressionAttributeNames: { | |
'#stat' : 'status', | |
'#type' : 'type' | |
}, | |
ExpressionAttributeValues: Object.assign( { ':type': type }, mappings ) | |
} |
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