Fixed multy fulltext index issue

Author: ihorvansach

Model/ResourceModel/Post/Collection.php

@@ -224,13 +224,9 @@ public function addSearchFilter($term)
         $this->addExpressionFieldToSelect(
             'search_rate',
             '(0
-              + (MATCH (content) AGAINST ("{{content}}")) * 1
-              + (MATCH (short_content) AGAINST ("{{short_content}}")) * 2
-              + (MATCH (title) AGAINST ("{{title}}")) * 5)',
+              + (MATCH (title, meta_keywords, meta_description, identifier, content) AGAINST ("{{term}}")) * 1)',
             [
-                'content' => $term,
-                'short_content' => $term,
-                'title' => $term
+                'term' => $term,
             ]
         );
 

Setup/UpgradeSchema.php

@@ -679,8 +679,9 @@ public function upgrade(SchemaSetupInterface $setup, ModuleContextInterface $con
             );
         }
 
+        /* remove multi-fulltext, it does not supported in some DB
         if (version_compare($version, '2.8.3.1') < 0) {
-            /* Fix issue https://github.com/magefan/module-blog/issues/205 */
+            // Fix issue https://github.com/magefan/module-blog/issues/205
             $table = $setup->getTable('magefan_blog_post');
             foreach (['title', 'content', 'short_content'] as $field) {
                 $connection->addIndex(
@@ -695,6 +696,8 @@ public function upgrade(SchemaSetupInterface $setup, ModuleContextInterface $con
                 );
             }
         }
+        */
+
         if (version_compare($version, '2.8.4.1') < 0) {
             $table = $setup->getTable('magefan_blog_tag');
             $connection->addColumn(