Revert "改名"

This reverts commit fdf58326

RequiredValidator.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: whwyy
+ * Date: 2018/4/3 0003
+ * Time: 15:47
+ */
+declare(strict_types=1);
+
+namespace validator;
+
+
+class RequiredValidator extends BaseValidator
+{
+
+	/**
+	 * @return bool
+	 * 检查是否存在
+	 */
+	public function trigger(): bool
+	{
+		if (!isset($this->params[$this->field])) {
+			return $this->addError('The param :attribute not exists');
+		} else {
+			return true;
+		}
+	}
+
+}