Code to convert Gravity Forms file uploads to media items and attach to a post.

gistfile1.txt

/*
 * There are a couple of places where we use GravityForms to do a file upload into a
 * meta-data item of type "upload".  The upload file type stores an attachment ID, 
 * whereas the Gravity Forms upload field stores a URL.
 *
 * This function is used to convert a URL in the meta-data item specified by the
 * $field parameter to an attachment ID - creating the attachment as it goes.
 *
 * This function should be called from a callback hooked to gform_after_submission_[x]
 *
 * This is based on the code here: http://www.pastie.org/3167687
 * which was submitted to this support thread: http://www.gravityhelp.com/forums/topic/file-upload-as-attachment-id
 */
function convert_upload_field_url_to_attachment( $post_id, $field) {

  $success = false;

	$filename = get_post_meta($post_id, $field, true);
		
	if(!is_numeric($filename) && $filename != '') {

	     $wp_filetype = wp_check_filetype(basename($filename), null );
		
	     $attachment = array(
	     'post_mime_type' => $wp_filetype['type'],
	     'post_title' => preg_replace('/\.[^.]+$/', '', basename($filename)),
	     'post_content' => '',
	     'post_status' => 'inherit'
	    );
	    
	    //Get the absolute path of the uploaded image by Gravity Forms
	    $abs_path = getcwd();
	    $actual_file = str_replace(site_url(),$abs_path,$filename);
	    $attach_id = wp_insert_attachment( $attachment, $actual_file, $post_id );
	    
	    //Update Media Metadata
	    //require_once(ABSPATH . 'wp-admin/includes/image.php');
	    //$attach_data = wp_generate_attachment_metadata( $attach_id, $actual_file );
	    //wp_update_attachment_metadata( $attach_id, $attach_data );
	    
	    if($attach_id) {
	    	update_post_meta($post_id, $field, $attach_id);
	    	$success = true;
	    }
	    
	}

	return $success;

}

This looks like exactly what I need, though I'm struggling to implement. Could I be so bold as to ask for your help?

How to get the attachment id of an image that was uploaded using the 'Post Image' post field in gravity forms?
I'm trying to add a post from the front end using wp_insert_post, I need an attachment id to pass it to update_post_meta. Is this possible?