Update Post Meta for a logged in user

I have created a form which collects information which I want to update a post with. The code I have works great, but instead of updating a post for the user, it creates a new one. Not sure what I am missing to get the current post to update instead of creating a new post. Here is the code I am using:

function update_role_and_post($record,$ajax_handler)
{
    $form_name = $record->get_form_settings('form_name');
    if ('Confirm Premium Account' !== $form_name) {
        return;
    }
    
$current_user = wp_get_current_user(); 
$current_user->remove_role( 'subscriber' );
$current_user->add_role( 'editor' );
    $form_data = $record->get_formatted_data();
    $update=$form_data["Content"]; 
    
    
    
// EVERYTHING UP TO THIS POINT WORKS
// EVERYTHING BELOW DOES NOT WORK!
    
    
// Assign the ID from the current WP_User object to a var for use below
$user_id = $current_user->ID;

    
$confirm=array( 
    'subscription'=> $subscription  // Wanting to use what is in the form and place it as the value for the upgraded meta-key
);
    
    
// Create array of arguments for our query
$args = array(
    'author' => $user_id,  // defined above
    'post_status' => 'publish',  // ignore deleted/drafted posts
    'fields' => 'ids',  // we only need the IDs
    'post_type'     => 'post',
    'meta_input'      => $confirm
);

// Query for posts by this author
$author_posts = new WP_Query( $args );

// WP_Query object contains lots of info; we only want the posts which will be an array if IDs based on our fields argument above.
$author_post_ids = $author_posts->posts;  // array of IDs only

// Loop through each post by this author
foreach ( $author_post_ids as $post_id ) {
    // On each loop iteration, update the post meta keys here
    update_post_meta( $post_id, $meta_key, $meta_value );
} 
}

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Answers:

Method 1

Answers:

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Method 1

Welcome to WPSE.

A few problems to note:

$user_id is not defined so your call to wp_get_current_user() is passing a null value as a parameter.

$current_user = wp_get_current_user($user_id);. // $user_id is not defined

wp_get_current_user() does not accept parameters. See the documentation here: https://developer.wordpress.org/reference/functions/wp_get_current_user/
This line $current_user->ID; does nothing. There is no ID method in the WP_User class.

You can simplify that section as follow:

$current_user = wp_get_current_user(); 
$current_user->remove_role( 'subscriber' );
$current_user->add_role( 'editor' );

// Assign the ID from the current WP_User object to a var for use below
$user_id = $current_user->ID;

Regarding post update vs creation, wp_update_post() expects an ID for the post you are updating. You appear to pass the user ID as $my_post['import_id'] which is not valid.

Are you attempting to update the user object or a post with user information?

EDIT: OP wishes to update the meta key/value of each post for the current author.

The code above solves the user role challenge and the following is a model for updating the post meta for each post that specific user has authored.

Note: update_post_meta() needs the post ID, the meta_key (the slug for the field) and the meta_value for each field you are updating.
https://developer.wordpress.org/reference/functions/update_post_meta/

// Create array of arguments for our query
$args = array(
    'author' => $user_id,  // defined above
    'post_status' => 'publish',  // ignore deleted/drafted posts
    'fields' => 'ids'  // we only need the IDs
);

// Query for posts by this author
$author_posts = new WP_Query( $args );

// WP_Query object contains lots of info; we only want the posts which will be an array if IDs based on our fields argument above.
$author_post_ids = $author_posts->posts;  // array of IDs only

// Loop through each post by this author
foreach ( $author_post_ids as $post_id ) {
    // On each loop iteration, update the post meta keys here
    update_post_meta( $post_id, $meta_key, $meta_value );
}

EDIT adding actual meta key and value specifics for OP.

function update_role_and_post( $record ) {

    if ( 'Confirm Premium Account' !== $record->get_form_settings( 'form_name' ) ) {
        return;
    }

    // Update current user role to editor
    $current_user = wp_get_current_user(); 
    $current_user->remove_role( 'subscriber' );
    $current_user->add_role( 'editor' );
    
    // Create array of arguments for our query
    $args = array(
        'author' => $current_user->ID, 
        'post_status' => 'publish', 
        'fields' => 'ids' 
    );
    
    // Query for posts by this author
    $author_posts = new WP_Query( $args );
    
    // Parse the post IDs from the rest of the WP_Query object
    $author_post_ids = $author_posts->posts;
    
    // Loop through each post by this author and update to premium
    foreach ( $author_post_ids as $post_id ) {
        update_post_meta( $post_id, 'subscription', 'premium' );
    }
}

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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