From b51aa0951ee27f0cfb68594157fbf74838a7d2a0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20B=C3=B6hmer?= <mail@jan-boehmer.de>
Date: Thu, 4 Aug 2022 00:06:22 +0200
Subject: [PATCH] Fixed error, when creation of new elements is disabled in
 collectionTypes.

This for example happens if the user does not have the permission to create new elements.
---
 .../elements/collection_type_controller.js         |  7 +++++++
 .../components/collection_type.macro.html.twig     | 14 ++++++++++----
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/assets/controllers/elements/collection_type_controller.js b/assets/controllers/elements/collection_type_controller.js
index 29d00cb2..4c804534 100644
--- a/assets/controllers/elements/collection_type_controller.js
+++ b/assets/controllers/elements/collection_type_controller.js
@@ -38,6 +38,13 @@ export default class extends Controller {
         const targetTable = this.targetTarget;
         const prototype = this.prototypeValue
 
+        if(!prototype) {
+            console.warn("Prototype is not set, we cannot create a new element. This is most likely due to missing permissions.");
+            bootbox.alert("You do not have the permsissions to create a new element. (No protoype element is set)");
+            return;
+        }
+
+
         //Apply the index to prototype to create our element to insert
         const newElementStr = this.htmlDecode(prototype.replace(/__name__/g, this.generateUID()));
 
diff --git a/templates/components/collection_type.macro.html.twig b/templates/components/collection_type.macro.html.twig
index c895987d..c97a8c56 100644
--- a/templates/components/collection_type.macro.html.twig
+++ b/templates/components/collection_type.macro.html.twig
@@ -1,8 +1,14 @@
 {% macro controller(form, deleteMessage) %}
-    {{ stimulus_controller('elements/collection_type', {
-        'deleteMessage': deleteMessage|trans,
-        'prototype': form_widget(form.vars.prototype)|e('html_attr')
-    }) }}
+    {% if form.vars.prototype is defined %}
+        {{ stimulus_controller('elements/collection_type', {
+            'deleteMessage': deleteMessage|trans,
+            'prototype': form_widget(form.vars.prototype)|e('html_attr')
+        }) }}
+    {% else %} {# If add_element is disabled/forbidden, prototype is not available #}
+        {{ stimulus_controller('elements/collection_type', {
+            'deleteMessage': deleteMessage|trans,
+        }) }}
+    {% endif %}
 {% endmacro %}
 
 {% macro target() %}