add action to clone an irregular date, fixes #3275

Closes #3275

Merge request studip/studip!3324

app/controllers/course/timesrooms.php

@@ -363,6 +363,33 @@ class Course_TimesroomsController extends AuthenticatedController
     }
 
 
+    /**
+     * Clone an existing date
+     *
+     * @param $termin_id
+     */
+    public function cloneDate_action($termin_id)
+    {
+        $date = CourseDate::find($termin_id);
+
+        if ($date) {
+            $termin = CourseDate::build($date);
+            $termin->setId($termin->getNewId());
+
+            $termin->dozenten = $date->dozenten;
+            $termin->statusgruppen = $date->statusgruppen;
+            $termin->store();
+
+            PageLayout::postSuccess(sprintf(
+                _('Der Termin "%s" wurde dupliziert.'),
+                htmlReady($termin->getFullName())
+            ));
+        }
+
+        $this->redirect('course/timesrooms/index');
+    }
+
+
     /**
      * Save date-information
      *

app/views/course/timesrooms/_cycleRow.php

@@ -126,6 +126,13 @@ $is_exTermin = $termin instanceof CourseExDate;
             Icon::create('edit'),
             ['data-dialog' => '']
         ) ?>
+        <? if (!$termin->metadate_id): ?>
+            <? $actionMenu->addLink(
+                $controller->url_for('course/timesrooms/cloneDate/' . $termin->id, $linkAttributes),
+                _('Termin duplizieren'),
+                Icon::create('copy')
+            ) ?>
+        <? endif ?>
         <? $actionMenu
                 ->conditionAll(Config::get()->RESOURCES_ENABLE && Config::get()->RESOURCES_ALLOW_ROOM_REQUESTS)
                 ->condition((bool) $room_request)