Markus, Did you checked the javascript console on your browser ? Usually when ajax stuff stop working after an event, some javascript error occurred, often caused by an illegal identifier.
The other cause is an exception in an ajax request execution on the server. Those are totally invisible to the browser but return invalid json strings and cause parsing error on the browser. Samuel > Le 2015-09-07 à 15:22, Markus Ruggiero <[email protected]> a écrit : > > To answer my own question (only partially): > > somehow the accessor assignedDropArea() is called at least once when the > corresponding loopvar is null. Simply trapping this case and returning a > dummy string fixes the problem. I do get distinct IDs for all dropAreas. > > However another problem now arises. > > Here is a screen shot from my test page: > > <PastedGraphic-1.png> > > The left column contains all available entries whereas the list on the right > contains the sections into which I want to drag an item from the left. When > the page is in its inital state I can drag any item from the left and drop it > on the right. But the drop action is only activated when I drop it onto any > of the already assigned items or the "Technical Dossier" header. The drop > does not trigger when I release the item over "General Section". And after a > successful drop no other drop from the left to the right triggers the action > method again, no matter where I let go. Reloding the page restores the > one-drop-is-possible "feature". > > What do I miss here? It looks as if the first drop kills the droppableArea. > And why is "General Section" not droppable at all? > > Help, I am lost > ---markus--- > >> On 07.09.2015, at 17:39, Markus Ruggiero <[email protected] >> <mailto:[email protected]>> wrote: >> >> I am trying to adapt the Wonder example DragAndDropLists. The example has 2 >> drop areas with hard coded id. I need to provide 1 source drop area and >> several destination drop areas. These are inside a WORepetition. I tried to >> use the repetition loopvar (item binding) to create a unique id attribute >> but the app crashes with a null pointer exception. Obviously even when the >> drop area is inside the WORepetition the JavaScript functions in the >> background seem to create/populate/whatever code/function upfront before the >> loop actually starts. Any idea how I could create an id for the drop area? >> >> Code currently looks something like this (just the relevant snippet): >> <webobject name = "sectionsRepetition"> >> <webobject name = "assignedIndustryTechdocTypesDropArea"> >> <table style="border:solid 1 red"> >> <tr> >> <td style="border:solid 1px red"><webobject name = >> "sectionTitle" /></td> >> </tr> >> >> <tr> >> >> with the bindings: >> >> sectionsRepetition : WORepetition { >> list = sectionsList; >> item = sectionsLoopvar; >> } >> assignedIndustryTechdocTypesDropArea : AjaxDroppable { >> id = assignedDropArea; >> updateContainerID = "everythingUpdateContainer"; >> action = droppedOnAssignementArea; >> droppedObject = droppedObject; >> onComplete = onCompleteFunction; >> } >> >> and in the component: >> public String assignedDropArea() { >> return "assignedDropArea_" + sectionsLoopvar.shortText(); >> } >> >> Crash is because sectionsLoopvar is null. >> >> Thanks for any help >> ---markus--- >> >> >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Webobjects-dev mailing list ([email protected] >> <mailto:[email protected]>) >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/webobjects-dev/mailinglists%40kataputt.com >> >> <https://lists.apple.com/mailman/options/webobjects-dev/mailinglists%40kataputt.com> >> >> This email sent to [email protected] > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/webobjects-dev/samuel%40samkar.com > > This email sent to [email protected]
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