remplace a list field of gravity forms with select and get the results from external api

functions.php

<?php
add_filter( 'gform_column_input_2_15_1', 'set_column', 10, 5 );
function set_column( $input_info, $field, $column, $value, $form_id ) {
	$request = wp_remote_get( 'https://pippinsplugins.com/edd-api/products' );

		if( is_wp_error( $request ) ) {
			return false; // Bail early
		}

	$body = wp_remote_retrieve_body( $request );

	$data = json_decode( $body );

	if( ! empty( $data ) ) {
	
		foreach( $data->products as $product ) {
			$products_array[] = $product->info->title;
		}
	}
    return array( 
		'type' => 'select', 
		'choices' => $products_array,
	);
}