allow to set excepted fields

FormDumpers/TableDumper.php

@@ -16,6 +16,13 @@ class TableDumper
      */
     protected $table;
 
+    /**
+     * The array of excepted fields.
+     * 
+     * @var array
+     */
+    protected $except = [];
+
     /**
      * The constructor.
      *
@@ -37,6 +44,19 @@ public static function make($table)
         return new static($table);
     }
 
+    /**
+     * Set excepted fields.
+     * 
+     * @param  array|string $except
+     * @return self
+     */
+    public function except($except)
+    {
+        $this->except = $except;
+
+        return $this;
+    }
+
     /**
      * Get table name.
      *
@@ -67,7 +87,9 @@ public function toSchema()
         $schema = [];
 
         foreach ($this->getColumns() as $column) {
-            $schema[] = $column->getName().':'.strtolower($column->getType());
+            if (! in_array($name = $column->getName(), $this->except)) {
+                $schema[] = $name.':'.strtolower($column->getType());
+            }
         }
 
         return implode(', ', $schema);