Issue #2811887 by Lendude, sdstyles, DeFr, louisnagtegaal, d.olaresko,...

Issue #2811887 by Lendude, sdstyles, DeFr, louisnagtegaal, d.olaresko, _Archy_, mpdonadio: Exposed date filter leads to a notice

core/modules/views/src/Plugin/views/filter/Date.php

@@ -133,6 +133,11 @@ public function acceptExposedInput($input) {
     }
     $rc = parent::acceptExposedInput($input);
 
+    // Restore what got overwritten by the parent.
+    if (!is_null($type)) {
+      $this->value['type'] = $type;
+    }
+
     // Don't filter if value(s) are empty.
     $operators = $this->operators();
     if (!empty($this->options['expose']['use_operator']) && !empty($this->options['expose']['operator_id'])) {
@@ -153,11 +158,6 @@ public function acceptExposedInput($input) {
       }
     }
 
-    // Restore what got overwritten by the parent.
-    if (!is_null($type)) {
-      $this->value['type'] = $type;
-    }
-
     return $rc;
   }
 

core/modules/views/src/Tests/Handler/FilterDateTest.php

@@ -292,4 +292,22 @@ protected function _testFilterDatetimeUI() {
     $this->assertConfigSchemaByName('views.view.test_filter_date_between');
   }
 
+  /**
+   * Tests that the exposed date filter is displayed without errors.
+   */
+  public function testExposedFilter() {
+    $this->drupalLogin($this->drupalCreateUser(['administer views']));
+    $this->drupalPostForm('admin/structure/views/nojs/handler/test_filter_date_between/default/filter/created', [], t('Expose filter'));
+    $this->drupalPostForm('admin/structure/views/view/test_filter_date_between/edit', [], t('Add Page'));
+    $edit = [
+      'path' => 'exposed-date-filter',
+    ];
+    $this->drupalPostForm('admin/structure/views/nojs/display/test_filter_date_between/page_1/path', $edit, t('Apply'));
+
+    $this->drupalPostForm(NULL, [], t('Save'));
+
+    $this->drupalGet('exposed-date-filter');
+    $this->assertField('created');
+  }
+
 }