rest api not working with WP REST API v1.2.5

Replies: 0

I have tried to create a rest-api which will update post metadata based on <post-id> and <meta-value>. meta key is _yoast_wpseo_redirect.

my API is not working as expected and I am getting json_no_route error while trying to hit it.

Here is my code in functions.php

function get_post_details ($params)
{
if(update_post_meta( $_GET[ 'id' ], '_yoast_wpseo_redirect', $_GET['value']))
{
$response['flag'] = 1;
$response['data'] = 'Successfully Update';
}
else{
$response['flag'] = 0;
$response['data'] = 'Some Problem';
}
return $response;
}

// Register the rest route here.
    add_action( 'rest_api_init', function () {
        register_rest_route( 'wp/v2', '/post_meta/', array(

                        'methods'  => 'GET',
                        'callback' => 'get_post_details'

                    ) );

            });

Thanks for the help !