felicino1968

Hi, this solved the issue, thanks a lot

Hello,
I have the same issue…
thanks

Hello
for the translations of the image data I wrote this plug-in.
I really don’t know if this can create problems with other parts of polylang but on my local test site it seems to work.

<?php
/*
Plugin Name: polylangimagetags
Description: extention for img meta fields for polylang
 * Add translation strings to image post meta
 *
 * @param $form_fields array, fields to include in attachment form
 * @param $post object, attachment record in database
 * @return $form_fields, modified form fields
 */

class Polylimg extends Polylang_Base {
	function __construct() {
		parent::__construct();
		$polylang = new Polyimg();
		if(!function_exists('get_languages_list')){
			function get_languages_list($hide_empty = false) {
				return get_terms('language', array('hide_empty'=>$hide_empty, 'orderby'=>'term_group' ));
			}
		}
	}
}

function pll_the_post_thumbnail($size = 'post-thumbnail', $attr = ''){
	$lang=pll_current_language();
	$opt=get_option('polylang');
	if($opt['default_lang']==$lang) {
		echo get_the_post_thumbnail( null, $size, $attr );
	}else{
		   (int) $id = get_post_thumbnail_id();
		$attr=array(
			'title'=> get_post_meta( $id, 'pll_img_tags_name_'.$lang, true),

			'class'	=> "attachment-$size",
			'alt'	=> get_post_meta($id, 'pll_img_tags_alt_'.$lang, true),

		);
		echo get_the_post_thumbnail( null, $size, $attr );
	}
	}

function pll_img_tags( $form_fields, $post ) {

	global $polylang;
	$lang=$polylang->get_languages_list();
	$opt=get_option('polylang');

	foreach ($lang as $language_name){
		if( $language_name -> slug !== $opt['default_lang']){
	$form_fields['pll_img_tags_name_'.$language_name -> slug ] = array(
		'label' => 'Title '.$language_name -> name ,
		'input' => 'text',
		'value' => get_post_meta( $post->ID, 'pll_img_tags_name_'.$language_name -> slug , true ),
		'helps' => 'Title in '.$language_name -> name
	);

	$form_fields['pll_img_tags_alt_'.$language_name -> slug ] = array(
		'label' => 'Alt '.$language_name -> name ,
		'input' => 'text',
		'value' => get_post_meta( $post->ID, 'pll_img_tags_alt_'.$language_name -> slug , true ),
		'helps' => 'Alt text in '.$language_name -> name
	);
	$form_fields['pll_img_tags_caption_'.$language_name -> slug ] = array(
		'label' => 'Caption '.$language_name -> name ,
		'input' => 'text',
		'value' => get_post_meta( $post->ID, 'pll_img_tags_caption_'.$language_name -> slug , true ),
		'helps' => 'Caption in '.$language_name -> name
	);

	}
	}

	return $form_fields;
}

add_filter( 'attachment_fields_to_edit', 'pll_img_tags', 10, 2 );

/**
 * Save values of image metadata in media uploader
 *
 * @param $post array, the post data for database
 * @param $attachment array, attachment fields from $_POST form
 * @return $post array, modified post data
 */

function pll_img_tags_save( $post, $attachment ) {

	global $polylang;
	$lang=$polylang->get_languages_list();
	foreach ($lang as $language_name){
	if( isset( $attachment['pll_img_tags_name_'.$language_name -> slug] ) )
		update_post_meta( $post['ID'], 'pll_img_tags_name_'.$language_name -> slug, $attachment['pll_img_tags_name_'.$language_name -> slug] );

	if( isset( $attachment['pll_img_tags_alt_'.$language_name -> slug] ) )
update_post_meta( $post['ID'], 'pll_img_tags_alt_'.$language_name -> slug,  $attachment['pll_img_tags_alt_'.$language_name -> slug]  );

	if( isset( $attachment['pll_img_tags_caption_'.$language_name -> slug] ) )
update_post_meta( $post['ID'], 'pll_img_tags_caption_'.$language_name -> slug,  $attachment['pll_img_tags_caption_'.$language_name -> slug]  );

	}
	return $post;
}

add_filter( 'attachment_fields_to_save', 'pll_img_tags_save', 10, 2 );