Support json columns using '->' syntax in where()

Author: gmartinez

src/Engines/Modes/Mode.php

@@ -64,6 +64,17 @@ private function parseWheres($wheres)
             $result [] = !empty($matches) ? array($matches[1], $matches[2], $value) : array($field, '=', $value);
         }
 
+        /**
+         * Add support for where() on json columns using '->' syntax
+         * data->a->b->c translates to json_unquote(json_extract(`data`, '$."a"."b"."c"'))
+         */
+        foreach ($result as $_k => $_v) {
+            if (($_v[0] ?? false) && stripos($_v[0],'->')!==false) {
+                list($root,$path) = explode('->',$_v[0],2);
+                $result[$_k][0] = "json_unquote(json_extract(`$root`, '$.\"".implode('"."',explode('->',$path))."\"'))";
+            }
+        }
+        
         return $result;
     }
 }