Gravity Forms Checkbox Dynamic Population with User Registration

gistfile1.txt

<?php

// Save user sport interests when activating user based on their original submission
add_action( 'gform_activate_user', 'after_user_activate', 10, 3 );
function after_user_activate( $user_id, $user_data, $signup_meta ) {
    $sports_string = get_user_meta($user_id, 'sports_interested_in', true);
    $sports_slug_array = explode(', ', $sports_string);
    $sports_array = array();

    foreach($sports_slug_array as $sports_slug) {
    	$sport_type_term_object = get_term_by('slug', $sports_slug, 'sport_type');
    	$term_id = $sport_type_term_object->term_id;
    	$sports_array[] = $term_id;
    }

    // Sports checkbox field key
	$field_key = "field_60483583b8d1a";
	update_field( $field_key, $sports_array, 'user_' . $user_id );
}

add_filter( 'gform_pre_render_2', 'pk_populate_sport_type_choices' );
add_filter( 'gform_pre_validation_2', 'pk_populate_sport_type_choices' );
add_filter( 'gform_pre_submission_filter_2', 'pk_populate_sport_type_choices' );
add_filter( 'gform_admin_pre_render_2', 'pk_populate_sport_type_choices' );
function pk_populate_sport_type_choices( $form ) {
    $sport_type_args = [
        'taxonomy'  => 'sport_type',
        'order' => 'ASC',
        'hide_empty' => false,
    ];
    $sport_types = get_terms( $sport_type_args );
 
    foreach( $form['fields'] as &$field )  {

        $field_id = 8;
        if ( $field->id != $field_id ) {
            continue;
        }

        $input_id = 1;
        $choices = [];
        $inputs = [];
        foreach( $sport_types as $sport_type ) {

            //skipping index that are multiples of 10 (multiples of 10 create problems as the input IDs)
            if ( $input_id % 10 == 0 ) {
                $input_id++;
            }

            $choices[] = [ 'text' => $sport_type->name, 'value' => $sport_type->slug ];
            $inputs[] = array( 'label' => $sport_type->name, 'id' => "{$field_id}.{$input_id}" );

            $input_id++;
        }
 		
        $field->choices = $choices;
        $field->inputs = $inputs;
    }
    
    return $form;
}