Initial Commit

inc/helpers/validation-rules/class-exists.php

@@ -0,0 +1,62 @@
+<?php
+/**
+ * Adds a validation rules that allows us to check if a given parameter exists.
+ *
+ * @package WP_Ultimo
+ * @subpackage Helpers/Validation_Rules
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Helpers\Validation_Rules;
+
+use WP_Ultimo\Dependencies\Rakit\Validation\Rule;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Adds a validation rules that allows us to check if a given parameter exists.
+ *
+ * @since 2.0.0
+ */
+class Exists extends Rule {
+
+	/**
+	 * Error message to be returned when this value has been used.
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $message = ':attribute :value is not valid';
+
+	/**
+	 * Parameters that this rule accepts.
+	 *
+	 * @since 2.0.0
+	 * @var array
+	 */
+	protected $fillableParams = array('model', 'column', 'except'); // phpcs:ignore
+
+	/**
+	 * Performs the actual check.
+	 *
+	 * @since 2.0.0
+	 *
+	 * @param mixed $value Value being checked.
+	 */
+	public function check($value) : bool {
+
+		$this->requireParameters(array(
+			'model',
+			'column'
+		));
+
+		$column = $this->parameter('column');
+		$model  = $this->parameter('model');
+
+		// do query
+		return !!$model::get_by($column, $value);
+
+	} // end check;
+
+} // end class Exists;