category disable children link

application/Espo/Core/Templates/Metadata/CategoryTree/clientDefs.json

@@ -22,5 +22,11 @@
                 }
             ]
         }
+    },
+    "relationshipPanels": {
+        "children": {
+            "selectDisabled": true,
+            "unlinkDisabled": true
+        }
     }
 }

application/Espo/Modules/Crm/Resources/metadata/clientDefs/DocumentFolder.json

@@ -36,5 +36,11 @@
                 }
             ]
         }
+    },
+    "relationshipPanels": {
+        "children": {
+            "selectDisabled": true,
+            "unlinkDisabled": true
+        }
     }
 }

application/Espo/Modules/Crm/Resources/metadata/clientDefs/KnowledgeBaseCategory.json

@@ -36,5 +36,11 @@
                 }
             ]
         }
+    },
+    "relationshipPanels": {
+        "children": {
+            "selectDisabled": true,
+            "unlinkDisabled": true
+        }
     }
 }

application/Espo/Resources/metadata/clientDefs/EmailTemplateCategory.json

@@ -40,6 +40,10 @@
     "relationshipPanels": {
         "emailTemplates": {
             "create": false
+        },
+        "children": {
+            "selectDisabled": true,
+            "unlinkDisabled": true
         }
     }
 }

application/Espo/Services/RecordTree.php

@@ -69,6 +69,8 @@ class RecordTree extends Record
         if ($this->entityType === 'RecordTree') {
             $this->entityType = null;
         }
+
+        $this->readOnlyLinkList[] = 'children';
     }
 
     public function setEntityType(string $entityType): void
@@ -384,4 +386,6 @@ class RecordTree extends Record
 
         return $idList;
     }
+
+
 }