Fixes #6697: Added `yii\helpers\Url::current()` method that allows adding or removing parameters from current URL

framework/CHANGELOG.md

@@ -28,6 +28,7 @@ Yii Framework 2 Change Log
 - Enh #6467: `ActiveForm` will scroll to the nearest visible element when the first error input is hidden (newartix)
 - Enh #6488: Support changing `yii\base\Theme::basePath` during runtime (qiangxue)
 - Enh #6618: Added Model::addErrors() (slavcodev, pana1990)
+- Enh #6697: Added `yii\helpers\Url::current()` method that allows adding or removing parameters from current URL (samdark, callmez)
 - Enh #6739: Log `Target` now works also when there is no `Yii::$app` instance available, no message prefix will be added in this case (schmunk42)
 - Enh #6748: Improved HTML to Text converter in BaseMailer to generate more readable and correct text version of emails (cebe)
 - Chg #5690: adjusted paths in message config generated by `yii message/config` to reflect directory structure better (mikehaertl, samdark)

framework/helpers/BaseUrl.php

@@ -342,4 +342,27 @@ class BaseUrl
     {
         return strncmp($url, '//', 2) && strpos($url, '://') === false;
     }
+
+    /**
+     * Creates URL from the current one by adding parameters specified.
+     *
+     * @param array $params associative array of parameters. If value is null, parameter will be removed.
+     * @param boolean|string $scheme the URI scheme to use in the generated URL:
+     *
+     * - `false` (default): generating a relative URL.
+     * - `true`: returning an absolute base URL whose scheme is the same as that in [[\yii\web\UrlManager::hostInfo]].
+     * - string: generating an absolute URL with the specified scheme (either `http` or `https`).
+     *
+     * @return string the generated URL
+     *
+     * @since 2.0.2
+     */
+    public static function current(array $params = [], $scheme = false)
+    {
+        $currentParms = Yii::$app->controller->actionParams;
+        $currentParms[0] = Yii::$app->controller->getRoute();
+        $route = ArrayHelper::merge($currentParms, $params);
+
+        return static::toRoute($route, $scheme);
+    }
 }

tests/unit/framework/helpers/UrlTest.php

@@ -94,6 +94,17 @@ class UrlTest extends TestCase
         Url::toRoute('site/view');
     }
 
+    public function testCurrent()
+    {
+        $this->mockAction('page', 'view', null, ['id' => 10, 'name' => 'test']);
+
+        $this->assertEquals('/base/index.php?r=page%2Fview&id=10&name=test', Url::current());
+
+        $this->assertEquals('/base/index.php?r=page%2Fview&id=20&name=test', Url::current(['id' => 20]));
+
+        $this->assertEquals('/base/index.php?r=page%2Fview&name=test', Url::current(['id' => null]));
+    }
+
     public function testTo()
     {
         // is an array: the first array element is considered a route, while the rest of the name-value