DynamoDB - 关键元素与架构不匹配 [英] DynamoDB - Key element does not match the schema

问题描述

我正在尝试更新我的 Dynamodb 表 +Users+ 中的一个项目.我尝试了许多不同的方法，但我总是收到相同的错误消息:

I'm trying to update an Item in my Dynamodb Table +Users+. I have tried many different ways but I always received the same error message:

提供的关键元素与架构不匹配

The provided key element does not match the schema

项目的创建和查询一样有效，但更新无效.当我检查 DynamoDB 时，用户创建良好:

The creation of an Item works, as well as a query but not the update. When I check on DynamoDB the user is well created:

{
  "email": "[e-mail]",
  "password": "123",
  "registration": 1460136902241,
  "verified": false
}

这是表格信息:

• 表名:用户
• 主分区键:电子邮件(字符串)
• 主排序键:注册(编号)

• Table name: Users
• Primary partition key: email (String)
• Primary sort key: registration (Number)

这是代码(从 lambda 调用):

exports.handler = function(event, context)
{
    var AWS = require("aws-sdk");


    var docClient = new AWS.DynamoDB.DocumentClient();

    var params = {
        TableName: "Users",
        Item:{
            email: "[e-mail]",
            password: "123",
            verified: false,
            registration: (new Date()).getTime(),
        }
    };

    // Create the user.

    docClient.put(params, function(err, data)
    {
        if (err)
        {
            context.fail("Put failed...");
            return;
        }

        var params = {
            TableName: "Users",
            Key: { email : "[e-mail]" },
            AttributeUpdates: {
                verified: {
                    Action: "PUT",
                    Value: true
                }
            }
        };

        // Update the user.
        docClient.update(params, function(err, data)
        {
            if (err)
            {
                console.log(JSON.stringify(err));
                context.fail(JSON.stringify(err));
                return;
            }
            context.succeed("User successfully updated.");
        });


    });

};

您知道我的代码有什么问题吗?

Do you have any idea of what could be wrong in my code?

推荐答案

你只提供了一半的主键.您的主键是分区键和范围键的组合.您需要在更新参数的 Key 属性中包含范围键.

You are only providing half of your primary key. Your primary key is a combination of the partition key and range key. You need to include the range key in your Key attribute in the update parameters.

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