add Save & Close button on the task edit form v1.8 t2

Asset/js/save-close.js

@@ -0,0 +1,39 @@
+/*
+ * OrganonTweaks -- the "Save & Close" button on the task edit form. It is a plain type=button (so it
+ * never becomes the Enter default -- Enter still triggers the core Save), and on click it repoints
+ * the form to the plugin's TaskSaveCloseController and lets Kanboard's own modal submit it. Kanboard
+ * keeps ownership of the POST, CSRF, error re-render, and the X-Ajax-Redirect navigation; we only
+ * change the destination, so the controller redirects to the board instead of the card view.
+ */
+(function () {
+    "use strict";
+
+    document.addEventListener("click", function (e) {
+        if (!e.target || !e.target.closest) {
+            return;
+        }
+
+        var btn = e.target.closest("[data-organon-save-close]");
+        if (!btn) {
+            return;
+        }
+
+        e.preventDefault();
+
+        var form = btn.closest("form");
+        var url = btn.getAttribute("data-url");
+        if (!form || !url) {
+            return;
+        }
+
+        form.setAttribute("action", url);
+
+        if (window.KB && KB.modal && KB.modal.isOpen && KB.modal.isOpen() && KB.modal.submitForm) {
+            KB.modal.submitForm();
+        } else if (form.requestSubmit) {
+            form.requestSubmit();
+        } else {
+            form.submit();
+        }
+    }, false);
+})();

Controller/TaskSaveCloseController.php

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+<?php
+
+namespace Kanboard\Plugin\OrganonTweaks\Controller;
+
+use Kanboard\Controller\TaskModificationController;
+
+/**
+ * "Save & Close": the exact core task update, but on success it redirects to the BOARD instead of
+ * reopening the card view. The plugin's "Save & Close" button repoints the edit form here (via JS),
+ * so everything else -- validation, permission checks, CSRF, and the modal error re-render -- is
+ * inherited unchanged from core TaskModificationController. This mirrors core update() line for line
+ * except the one redirect target (kept in sync on Kanboard upgrades).
+ */
+class TaskSaveCloseController extends TaskModificationController
+{
+    public function update()
+    {
+        $task = $this->getTask();
+        $values = $this->request->getValues();
+        $values['id'] = $task['id'];
+        $values['project_id'] = $task['project_id'];
+
+        list($valid, $errors) = $this->taskValidator->validateModification($values);
+
+        if ($valid && $this->updateTask($task, $values, $errors)) {
+            $this->flash->success(t('Task updated successfully.'));
+            $this->response->redirect($this->helper->url->to('BoardViewController', 'show', array('project_id' => $task['project_id'])), true);
+        } else {
+            $this->flash->failure(t('Unable to update your task.'));
+            $this->edit($values, $errors);
+        }
+    }
+}

Template/task_form/save_close_button.php

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+<?php $task_id = isset($values['id']) ? (int) $values['id'] : 0 ?>
+<?php if ($task_id > 0): ?>
+    <button type="button" class="btn"
+            data-organon-save-close="1"
+            data-url="<?= $this->url->href('TaskSaveCloseController', 'update', array('plugin' => 'OrganonTweaks', 'task_id' => $task_id)) ?>">
+        <?= t('Save & Close') ?>
+    </button>
+<?php endif ?>