Initial Commit

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

@@ -0,0 +1,96 @@
+<?php
+/**
+ * Adds a validation rules that allows us to check if a given parameter is unique.
+ *
+ * @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 is unique.
+ *
+ * @since 2.0.0
+ */
+class Unique extends Rule {
+
+	/**
+	 * Error message to be returned when this value has been used.
+	 *
+	 * @since 2.0.0
+	 * @var string
+	 */
+	protected $message = ':attribute :value has been used';
+
+	/**
+	 * Parameters that this rule accepts.
+	 *
+	 * @since 2.0.0
+	 * @var array
+	 */
+	protected $fillableParams = array('model', 'column', 'self_id'); // 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');
+		$self_id = $this->parameter('self_id');
+
+		switch ($model) {
+			case '\WP_User':
+				$callback = 'get_user_by';
+				break;
+			default:
+				$callback = array($model, 'get_by');
+				break;
+		}
+
+		// do query
+		$existing = call_user_func($callback, $column, $value);
+
+		$user_models = array(
+			'\WP_User',
+			'\WP_Ultimo\Models\Customer',
+		);
+
+		/*
+		* Customize the error message for the customer.
+		*/
+		if (in_array($model, $user_models, true)) {
+
+			$this->message = __('A customer with the same email address or username already exists.', 'wp-ultimo');
+
+		} // end if;
+
+		if (!$existing) {
+
+			return true;
+
+		} // end if;
+
+		$id = method_exists($existing, 'get_id') ? $existing->get_id() : $existing->id;
+
+		return absint($id) === absint($self_id);
+
+	} // end check;
+
+} // end class Unique;