Support multiple databases at same time.

src/Libs/Model.php

@@ -3,7 +3,8 @@
  * Model - DuckBrain
  *
  * Modelo ORM para objetos que hagan uso de una base de datos.
- * Depende de Libs\Database.
+ * Depende de Libs\Database y hace uso de las constantes
+ * DB_TYPE, DB_HOST, DB_NAME, DB_USER y DB_PASS.
  *
  * @author KJ
  * @website https://kj2.me
@@ -30,7 +31,6 @@ class Model {
     static protected array   $forceSave   = [];
     static protected string  $table;
     static protected string  $tableSufix  = 's';
-    static protected ?PDO    $db          = null;
     static protected array   $queryVars   = [];
     static protected array   $querySelect = [
         'select'              => ['*'],
@@ -51,10 +51,19 @@ class Model {
      */
     protected static function db(): PDO
     {
-        if (is_null(static::$db))
-            static::$db = Database::getInstance();
-
-        return static::$db;
+        if (DB_TYPE == 'sqlite')
+            return Database::getInstance(
+             type: DB_TYPE,
+             name: DB_NAME
+            );
+        else
+            return Database::getInstance(
+                DB_TYPE,
+                DB_HOST,
+                DB_NAME,
+                DB_USER,
+                DB_PASS
+            );
     }
 
     /**