fires before sending data for item update

void onBeforeUpdate(id id,object details){ ... };


ididthe old ID of the related item
detailsobjectthe object which holds the state of data saving


dp.attachEvent("onBeforeUpdate", function(id, details){
    //... some code here ... 


1 . The id parameter contains old client-side item ID.

2 . The details parameter contains data saving details, e.g.:

  • data - data item object;
  • id - old (clientside) ID;
  • operation - the type of operation ("update").

Note that returning false from the event handler will suppress request to the server:

const processor = webix.dp("$datatable1");
  processor.attachEvent("onBeforeUpdate", () => {
    // cancel server request
    return false;

Related sample:  DataProcessor: Canceling Server Request

See also
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