"wpDiscuz - Media Uploader" extension breaks ElasticPress

Hi @alexander-schneider,

We're going to check the issue. I'll update the topic asap. 

ElasticPress has some wp-cli commands, for example for indexing posts.

In case of wpDiscuz extension Media Uploader is active, following error-stack occurs on "wp elasticpress index --setup":

PHP Fatal error: Uncaught Error: Call to a member function isLoadWpdiscuz() on null in /my-path/wp-content/plugins/wpdiscuz-media-uploader/class.WpdiscuzMediaUploader.php:273
Stack trace:
#0 /my-path/wp-includes/class-wp-hook.php(288): WpdiscuzMediaUploader->oembedTtl(86400, 'https://twitter...', Array, NULL)
#1 /my-path/wp-includes/plugin.php(206): WP_Hook->apply_filters(86400, Array)
#2 /my-path/wp-includes/class-wp-embed.php(214): apply_filters('oembed_ttl', 86400, 'https://twitter...', Array, NULL)
#3 /my-path/wp-includes/class-wp-embed.php(428): WP_Embed->shortcode(Array, 'https://twitter...')
#4 [internal function]: WP_Embed->autoembed_callback(Array)
#5 /my-path/wp-includes/class-wp-embed.php(410): preg_replace_callback('|^(\\s*)(https?:...', Array, '<!-- wp:paragra...')
#6 /my-path/wp-includes/class-wp-hook.php(288): WP_Embed->autoembed('<!-- wp:paragra...')
#7 /my-path/wp-inc in /my-path/wp-content/plugins/wpdiscuz-media-uploader/class.WpdiscuzMediaUploader.php on line 273

Hopefully this helps you to find the problem.

Best regards

There is no such issue on our test websites.

Sorry, but your developers didn't a good job, because I have gave the issue and the steps to reproduce to another developer and he can reproduce this issue.

But ok... here is the detailed error (code/line) and the solution to fix this error...

In wp-content/plugins/wpdiscuz-media-uploader/class.WpdiscuzMediaUploader.php, line 69 replace:

add_filter('wp_kses_allowed_html', array(&$this, 'filterKses'));

...with:

add_filter('wp_kses_allowed_html', array(&$this, 'filterKses'), 10, 2);

In wp-content/plugins/wpdiscuz-media-uploader/class.WpdiscuzMediaUploader.php, line 155 replace:

public function filterKses($context) {
    global $allowedtags;

...with:

public function filterKses($allowedtags, $context) {

The problem was, the first argument is an array with the allowed tags and not the context.

With these changings everything works fine and wpDiscuz doesn't break ElasticPress which uses the filter wp_kses_allowed_html in the correct way.