在Cognito用户池中注册时如何检查用户是否已经使用相同的电子邮件或电话号码存在 [英] how to check if user already exist with same email or phone number while registration in Cognito user pool

问题描述

当新用户使用相同的电子邮件和电话号码注册时，该用户已成功在Cognito用户池中注册.因此，如何在Cognito用户池中注册时检查用户是否已经使用相同的电子邮件或电话号码存在

when new user register with same email and phone number user successfully registered in the Cognito user pool. so how can i check if user already exist with same email or phone number while registration in Cognito user pool

这是我在Cognito用户池中进行用户注册的代码

This is my code for user registration in Cognito user pool

result = client.sign_up(                                                
            ClientId= clientId,                                                 
            Username= data['username'],                                         
            Password= data['password'],                                         
            UserAttributes=[                                                    
                {                                                               
                    'Name': 'phone_number',                                     
                    'Value': data['phone_number'],                              
                },                                                              
                {                                                               
                    'Name': 'email',                                            
                    'Value': data['email'],                                     
                },                                                              
                {                                                              
                    'Name': 'custom:usertype',                                 
                    'Value': data['userType']                                  
                },                                                             
            ],                                                                  
            ValidationData=[                                                   
                {                                                              
                    'Name': 'custom:usertype',                                 
                    'Value': 'required'                                        
                },                                                             
            ],
)

推荐答案

您可以使用ListUsers API调用(

You can use ListUsers API call (https://docs.aws.amazon.com/cognito-user-identity-pools/latest/APIReference/API_ListUsers.html) to filter users by their attributes and if it comes back with results, then you can handle user validation.

您还可以在预注册Lambda触发器"中包含此逻辑，以集中服务器端验证逻辑: https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-pre-sign-up.html

You can also contain this logic in the "Pre-Sign-up Lambda Trigger" to centralize server-side validation logic: https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-pre-sign-up.html

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