Gravity Perks // GP Media Library // Ajax Upload

gp-media-library-ajax-upload.php

<?php
/**
 * WARNING! THIS SNIPPET MAY BE OUTDATED.
 * The latest version of this snippet can be found in the Gravity Wiz Snippet Library:
 * https://github.com/gravitywiz/snippet-library/blob/master/gp-media-library/gpml-ajax-upload.php
 */
/**
 * Gravity Perks // GP Media Library // Ajax Upload
 *
 * Upload images to the Media Library as they are uploaded via the Gravity Forms Multi-file Upload field.
 *
 * @version  0.13
 * @author   David Smith <david@gravitywiz.com>
 * @license  GPL-2.0+
 * @link     http://gravitywiz.com/documentation/gravity-forms-media-library/
 *
 * Plugin Name:  GP Media Library - Ajax Upload
 * Plugin URI:   http://gravitywiz.com/documentation/gravity-forms-media-library/
 * Description:  Upload images to the Media Library as they are uploaded via the Gravity Forms Multi-file Upload field.
 * Author:       Gravity Wiz
 * Version:      0.13
 * Author URI:   http://gravitywiz.com/
 */
class GPML_Ajax_Upload {

    public function __construct( $args = array() ) {

        $this->_args = wp_parse_args( $args, array(
            'default_entry_id' => 1,
        ) );

        add_action( 'init', array( $this, 'init' ), 11 );

    }

    public function init() {

	    if( ! is_callable( 'gp_media_library' ) ) {
		    return;
	    }

	    add_action( 'gform_post_multifile_upload', array( $this, 'upload' ), 10, 5 );

	    remove_action( 'gform_entry_post_save', array( gp_media_library(), 'maybe_upload_to_media_library' ) );
	    add_filter( 'gform_entry_post_save', array( $this, 'update_entry_field_values' ), 10, 2 );

	    // This filter ensures that this snippet is called on Gravity Flow inbox pages which do not
	    // seem to trigger `gform_entry_post_save` when updating entries.
	    add_filter( 'gravityflow_next_step', array( $this, 'gpml_gflow_next_step' ), 10, 4 );

    }
	
    public function gpml_gflow_next_step( $step, $current_step, $entry, $steps ) {
		$form = GFAPI::get_form( $entry[ 'form_id' ] );
		$this->update_entry_field_values( $entry, $form );
		return $step;
    }

    public function upload( $form, $field, $uploaded_filename, $tmp_file_name, $file_path ) {

	    if( ! gp_media_library()->is_applicable_field( $field ) ) {
		    return;
	    }

	    $field_uid = implode( '_', array( rgpost( 'gform_unique_id' ), $field->id ) );

	    $renamed_file_path = str_replace( basename( $file_path ), $uploaded_filename, $file_path );
		rename( $file_path, $renamed_file_path );

	    $id = gp_media_library()->upload_to_media_library( $renamed_file_path, $field, array( 'id' => $this->_args['default_entry_id'] ) );
	    if( is_wp_error( $id ) ) {
		    return;
	    }

		$key = sprintf( 'gpml_ids_%s', $field_uid );

	    // Get file IDs.
	    $ids = gform_get_meta( $this->_args['default_entry_id'], $key );

	    if( ! is_array( $ids ) ) {
		    $ids = array();
	    }

	    $ids[] = $id[0];

	    // Update file IDs.
	    gform_update_meta( $this->_args['default_entry_id'], $key, $ids, $form['id'] );

		$output = array(
			'status' => 'ok',
			'data'   => array(
				'temp_filename'     => $tmp_file_name,
				'uploaded_filename' => str_replace( "\\'", "'", urldecode( $uploaded_filename ) ), //Decoding filename to prevent file name mismatch.
				'url'               => wp_get_attachment_image_url( $id[0] ),
			)
		);

		$output = json_encode( $output );

		die( $output );

    }

    public function update_entry_field_values( $entry, $form ) {

	    foreach( $form['fields'] as $field ) {

		    if( $field->get_input_type() != 'fileupload' || ! $field->multipleFiles ) {
			    continue;
		    }

		    $field_uid = implode( '_', array( rgpost( 'gform_unique_id' ), $field->id ) );
		    $ids = gform_get_meta( $this->_args['default_entry_id'], sprintf( 'gpml_ids_%s', $field_uid ) );
		    if( empty( $ids ) ) {
		    	continue;
		    }

		    $new_value = array();

		    foreach( $ids as $id ) {
			    if( ! is_wp_error( $id ) ) {
				    $new_value[] = wp_get_attachment_url( $id );
			    }
		    }
		    // Append to current value if present
		    $current_value = rgar( $entry, $field->id, false );
		    if ( $current_value ) {
		    	$new_value = array_merge( json_decode( $current_value ), $new_value );
		    }
		    $entry[ $field->id ] = json_encode( $new_value );

		    $entry[ $field->id ] = json_encode( $new_value );

		    // Save our changes to the DB for this entry.
		    GFAPI::update_entry_field( $entry['id'], $field->id, $entry[ $field->id ] );

		    // Delete temporary file ID meta.
		    gform_delete_meta( $this->_args['default_entry_id'], sprintf( 'gpml_ids_%s', $field_uid ) );

		    // Save the file ID meta to the actual entry/field.
		    gp_media_library()->update_file_ids( $entry['id'], $field->id, $ids );

	    }

	    return $entry;
    }

}

# Configuration

new GPML_Ajax_Upload();

👉 This Gist has been migrated to the Gravity Wiz Snippet Library:

https://github.com/gravitywiz/snippet-library/blob/master/gp-media-library/gpml-ajax-upload.php