can not load model when add new root

[tentruycapcuaban]

hi kartik, can you show me how to fix it???

{"name":"Exception","message":"This operation is not allowed.","code":0,"type":"yii\\base\\InvalidCallException","file":"D:\\wamp64\\www\\thsams\\vendor\\kartik-v\\yii2-tree-manager\\controllers\\NodeController.php","line":128,"stack-trace":["#0 D:\\wamp64\\www\\thsams\\vendor\\kartik-v\\yii2-tree-manager\\controllers\\NodeController.php(286): kartik\\tree\\controllers\\NodeController::checkValidRequest()","#1 [internal function]: kartik\\tree\\controllers\\NodeController->actionManage()","#2 D:\\wamp64\\www\\thsams\\vendor\\yiisoft\\yii2\\base\\InlineAction.php(55): call_user_func_array(Array, Array)","#3 D:\\wamp64\\www\\thsams\\vendor\\yiisoft\\yii2\\base\\Controller.php(151): yii\\base\\InlineAction->runWithParams(Array)","#4 D:\\wamp64\\www\\thsams\\vendor\\yiisoft\\yii2\\base\\Module.php(455): yii\\base\\Controller->runAction('manage', Array)","#5 D:\\wamp64\\www\\thsams\\vendor\\yiisoft\\yii2\\web\\Application.php(84): yii\\base\\Module->runAction('treemanager/nod...', Array)","#6 D:\\wamp64\\www\\thsams\\vendor\\yiisoft\\yii2\\base\\Application.php(375): yii\\web\\Application->handleRequest(Object(yii\\web\\Request))","#7 D:\\wamp64\\www\\thsams\\web\\index.php(12): yii\\base\\Application->run()","#8 {main}"]}

[tentruycapcuaban]

look seem can not load _form

[Spillo89]

I have the same issue, do you have fixed in some ways?

[kazykenov]

Faced the same issue, seems that Trait implementation is not working (as Tree extend method works well)

[kartik-v]

Faced the same issue, seems that Trait implementation is not working (as Tree extend method works well)

With the trait implementation you need to define all the other public properties in your model as mentioned in the documentation for setting up your model. You can also cross check the default model class kartik\tree\models\Tree to check which properties you must define.

Also you cannot just override the methods in the trait approach as parent::methodname() or parent::rules() will not work - check the doc example above - how you need to extend the methods of the trait.

[kartik-v]

On the model not loading - just debug your code to show the error messages of the model.

Note that the TreeView widget on load expects a displayValue which is equal to the id primary key value and is important to show the default node model when initializing the tree view.