Count of tasks to be updated

Gantt
#1

Hello there,

Is there a way to get the count of all the tasks that are about to be updated? My goal is to build a custom loading bar for my users to show that x amount of tasks are still saving.

Like if I move a task that is linked to 50 more tasks, is there way to get a count of all the effected tasks?

Thanks!

#2

Hi,
it’s possible, but can be implemented in many ways, depending on how you configure data saving.
If you have the same configuration as shown in this example docs.dhtmlx.com/gantt/samples/0 … _json.html
then you can get a list of updated events in onBeforeDataSending event of the dataprocessor - screencast.com/t/VjDJGRjE - note the third argument.
docs.dhtmlx.com/api__dataproces … event.html

Also please note that for some actions (such as deleting branch of tasks) this event will be called twice - once to send tasks and once to send links.
you can check which is being sent by checking dataProcessor.serverProcessor property -

dp.attachEvent("onBeforeDataSending", function(id, state, data){ if(dp.serverProcessor.indexOf("gantt_mode=links") > -1){ //sending links }else{ //sending tasks } return true; });

In case you have dataprocessor configured differently, e.g. in REST mode, each update will be sent individually and you won’t be able to capture a single event containing all records. Instead, you could capture updating of each entry individually docs.dhtmlx.com/api__dataproces … event.html - a record is being saved after onBeforeUpdate fired and until onAfterUpdate fired - so you can capture these events and keep the list of records that are being updated now.

#3

Thanks for the reply! I’m actually using the REST method, so i’ll have to stir something up using the two events you provided me with.

Do you know - is it possible to tell the difference between a ‘Task’ and a ‘Link’ in onAfterUpdate? I’m hoping it is stored in the response somewhere. I just want to use some more custom code if it’s a task. If it’s updating a link I want to do nothing.

Does that make sense?

#4

Yes, although the approach with checking dataProcessor.serverProcessor url doesn’t seem to be reliable. So currently you’ll need to check an internal property of data processor object for this.
Something like following:

[code]function getUpdateMode(){
return dp._ganttMode;
}

dp.attachEvent(“onBeforeUpdate”, function(id, state, data){
if(updateMode() == “tasks”){
// do something when start updating task
}
return true;
});

dp.attachEvent(“onAfterUpdate”, function(id, state, data){
if(updateMode() == “tasks”){
// do something after task update has been completed
}
});[/code]