Debugging

Debug backtrace any error

// This function exists in core/includes/bootstrap.inc.

// Just need to add lines 6-8 to it.

function _drupal_error_handler($error_level, $message, $filename, $line, $context) {

require_once DRUPAL_ROOT . '/includes/errors.inc';

require_once DRUPAL_ROOT . '/modules/contrib/devel/kint/kint.module';

$d = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);

ksm($message, $d);

_drupal_error_handler_real($error_level, $message, $filename, $line, $context);

}

Debugging search API solr queries

// You can output the Request object using kint/kpm, but it can be hard

// to figure out where to set the debugging code. The best place is in

// the executeRequest function in the following file:

// search_api_solr/src/SolrConnector/SolrConnectorPluginBase.php

Starting point for debugging ElasticSearch stuff

// src/ElasticSearch/Parameters/Builder/SearchBuilder.php:

// Add ksm at the end of build() and getSearchQueryOptions()