Fix migration for altering post content fields

anchor/migrations/211_alter_post_page_content.php

@@ -16,12 +16,29 @@ public function up() {
             $sql  = 'ALTER TABLE `' . $table . '` ';
             $sql .= 'ADD `html` TEXT NOT NULL AFTER `markdown`';
             DB::ask($sql);
+
+            $pages = Page::sort('menu_order', 'desc')->get();
+            foreach ($pages as $page) {
+                Page::update($page->id, array(
+                    'html' => parse($page->markdown)
+                ));
+            }
         }
 
         if(!$this->has_table_column($table2, 'markdown') && $this->has_table_column($table2, 'html')) {
             $sql  = 'ALTER TABLE `' . $table2 . '` ';
             $sql .= 'ADD `markdown` TEXT NOT NULL AFTER `description`';
             DB::ask($sql);
+
+            $migrate_data_sql = 'update `' . $table2 . '` set `markdown` = `html`, `html` = "";';
+            DB::ask($migrate_data_sql);
+
+            $posts = Post::sort('created', 'desc')->get();
+            foreach ($posts as $post) {
+                Post::update($post->id, array(
+                    'html' => parse($post->markdown)
+                ));
+            }
         }
     }