Compatibility with TranslatePress

[webtrainingwheels]

When using TranslatePress and WP Rocket we don't purge the cache for additional languages when updating content.

The permalink structure in this case is like this:
Default language: example.com
Additional language: example.com/de/

The customer in this case noted it specifically related to WooCommerce products, but the issue is the same for non-Woo content as well since I guess WP Rocket won't be aware of any other language.

We could create compatibility as we do for Polylang etc.
As with other multilingual plugins, various URL configurations are allowed and should be detected: https://jmp.sh/QAwHjUf

Ticket: https://secure.helpscout.net/conversation/1573104333/280196?folderId=377611

[webtrainingwheels]

I guess this would be fixed at the same time: #3760

[juricazuanovic]

Related ticket: https://secure.helpscout.net/conversation/1838299316/335912

[WordPresseur]

Related ticket: https://secure.helpscout.net/conversation/1995267507/365271/

[webtrainingwheels]

More requests:
https://secure.helpscout.net/conversation/2022483496/371558/
https://secure.helpscout.net/conversation/2015160692/369843/
https://secure.helpscout.net/conversation/2014759996/369762/
https://secure.helpscout.net/conversation/1988449432/363806/
https://secure.helpscout.net/conversation/1980369262/362112/
https://secure.helpscout.net/conversation/1916426051/347781/
https://secure.helpscout.net/conversation/2070611512/382234?folderId=377611

[razvan-translatepress]

Hi,
I am Razvan, developer at TranslatePress. Here are some code snippets that might help. The second one requires TranslatePress version 2.5.7 which will be released in about a week.
https://gist.github.com/razvan-translatepress/a05bb4dc8cd13ab152162194950993d1

[piotrbak]

Thank you @razvan-translatepress! Do you maybe have a function that would allow us getting the flag images of active languages, like here?

wp-rocket/inc/functions/i18n.php

Line 18 in 14eba34

$flag = $sitepress->get_flag( $lang['code'] );

[piotrbak]

Acceptance Criteria:

1. When doing regular update of specific post, we'll clear the cache of all versions of translated content.
2. When updating the post using TranslatePress UI, we'll clear the cache of updated language versions (only for TranslatePress 2.5.7 or higher)
3. In the admin bar we'll introduce section, just like for the other multilanguage plugins. Clear Cache will become a parent, not clickable string. In the submenu we'll list all available languages with their flags (max-width 16px, max height 11px) and All Languages link. Clearing specific languages will purge cache related to specific language only while clearing All Languages will purge everything.
   

[jeawhanlee]

Scope a solution ✅

Cleaning all version of updated post.
Add a new event post_updated with first callback here

Clearing cache via TranslatePress UI for 2.5.7+
Add a a conditional check in get_subscribed_events - version_compare( TRP_PLUGIN_VERSION, '2.5.7', '>=' )
Add a new event trp_save_editor_translations_regular_strings with second callback here

For the Admin bar

• Update this function here

  wp-rocket/inc/functions/i18n.php

  Line 158 in 4b50481

  function rocket_has_i18n() {

if ( function_exists( 'trp_get_languages' ) && ! empty( trp_get_languages( 'nodefault' ) ) ) {
    return 'translatepress';
}

• Add a new function in https://github.com/wp-media/wp-rocket/blob/4b50481c4aae781f3ea70fd35ee04ffcf1e033d1/inc/functions/i18n.php to get all the active languages with trp_get_languages() with flags in the path TRP_PLUGIN_URL . 'assets/images/flags/
• Call new function in the switch statement here

  wp-rocket/inc/common/admin-bar.php

  Line 89 in 4b50481

  switch ( $i18n_plugin ) {

• Add a new condition to clear cache for all languages just like how we do here:
  

  wp-rocket/inc/common/admin-bar.php

  Lines 118 to 128 in 4b50481

  	if ( 'wpml' !== $i18n_plugin ) {
  	// Add subemnu "All langs" (the one for WPML is already printed).
  	$wp_admin_bar->add_menu(
  	[
  	'parent' => 'purge-all',
  	'id' => 'purge-all-all',
  	'title' => '<div class="dashicons-before dashicons-admin-site" style="line-height:1.5"> ' . __( 'All languages', 'rocket' ) . '</div>',
  	'href' => wp_nonce_url( admin_url( 'admin-post.php?action=' . $action . '&type=all&lang=all' . $referer ), $action . '_all' ),
  	]
  	);
  	}

Estimate the effort ✅
[S]

[razvan-translatepress]

Thank you @razvan-translatepress! Do you maybe have a function that would allow us getting the flag images of active languages, like here?

wp-rocket/inc/functions/i18n.php

Line 18 in 14eba34

$flag = $sitepress->get_flag( $lang['code'] );

I have added to existing gist a 4th item with a code example on how to get flags and language names for active languages.