Hi all,

I am just upgrading to Silverstripe 3. Everything worked out perfectly, but now I tried to set up the Advanced Workflow module (the current version) which is causing me some trouble. Actually, the installation including dev/build did not bring up any errors or warnings, but when I try to create a new workflow, I always get the following error (captured with FireBug):

ERROR [User Error]: Uncaught Exception: ManyManyList::add() can't be called until a foreign ID is set
IN POST /admin/workflows/WorkflowDefinition/EditForm/field/WorkflowDefinition/item/new/ItemEditForm
Line 76 in /web/XXXXX/htdocs/silverstripe2/framework/model/ManyManyList.php

Source
======
  67:  	 * @param $extraFields A map of additional columns to insert into the joinTable
  68:  	 */
  69:  	function add($item, $extraFields = null) {
  70:  		if(is_numeric($item)) $itemID = $item;
  71:  		else if($item instanceof $this->dataClass) $itemID = $item->ID;
  72:  		else throw new InvalidArgumentException("ManyManyList::add() expecting a $this->dataClass object,
       or ID value", E_USER_ERROR);
  73:  		
  74:  		// Validate foreignID
  75:  		if(!$this->foreignID) {
* 76:  			throw new Exception("ManyManyList::add() can't be called until a foreign ID is set",
       E_USER_WARNING);
  77:  		}
  78:  		
  79:  		// Delete old entries, to prevent duplication
  80:  		$this->removeById($itemID);
  81:  
  82:  		// Insert new entry/entries

Trace
=====
ManyManyList->add(1)
DataList.php:836

DataList->setByIDList(Array)
CheckboxSetField.php:186

CheckboxSetField->saveInto(WorkflowDefinition)
Form.php:1176

Form->saveInto(WorkflowDefinition)
GridFieldDetailForm.php:367

GridFieldDetailForm_ItemRequest->doSave(Array,Form,SS_HTTPRequest)
Form.php:348

Form->httpSubmission(SS_HTTPRequest)
RequestHandler.php:168

RequestHandler->handleRequest(SS_HTTPRequest,DataModel)
RequestHandler.php:186

RequestHandler->handleRequest(SS_HTTPRequest,DataModel)
GridFieldDetailForm.php:82

GridFieldDetailForm->handleItem(GridField,SS_HTTPRequest)
GridField.php:649

GridField->handleRequest(SS_HTTPRequest,DataModel)
RequestHandler.php:186

RequestHandler->handleRequest(SS_HTTPRequest,DataModel)
RequestHandler.php:186

RequestHandler->handleRequest(SS_HTTPRequest,DataModel)
Controller.php:149

Controller->handleRequest(SS_HTTPRequest,DataModel)
LeftAndMain.php:341

LeftAndMain->handleRequest(SS_HTTPRequest,DataModel)
AdminRootController.php:88

AdminRootController->handleRequest(SS_HTTPRequest,DataModel)
Director.php:281

Director::handleRequest(SS_HTTPRequest,Session,DataModel)
Director.php:112

Director::direct(/admin/workflows/WorkflowDefinition/EditForm/field/WorkflowDefinition/item/new/ItemEditForm,DataModel)
main.php:126

Does anyone have a suggestion how to solve this problem? I have not come across any relevant bug ticket.

Thanks a lot in advance,
Moccy

I'm going to be working with the module a bit later today / tomorrow, so will be able to see a bit more then, but my guess is that you're selecting users/groups when initially creating the workflow? Try creating the definition first, then select users/groups after it's been saved for the first time; this will be changed so you can't perform those actions until after it's saved.

Your guess is right. I now tried to create it without selecting users or groups and it just works... Thank you very much for the workaround!