[REACT] How to implement vertical and horizontal scroll lazy loading ?

[clovisapp]

Hi Bryntum team,

We have implemented your Scheduler Pro and Gantt UI components.

It's necessary for us to display thousands of tasks on them.
How can we implement a good horizontal and vertical lazing loading with these components with our back-end, and don't return thousands of tasks each time ?

Thanks a lot for your tips

[alex.l]

There is no vertical buffering available now.
For Gantt - it is not possible to split data now, because all data required for Engine calculations.

For the SchedulerPro check https://bryntum.com/docs/scheduler-pro/api/Scheduler/view/mixin/TimelineScroll#config-infiniteScroll
https://bryntum.com/docs/scheduler-pro/api/Scheduler/data/mixin/EventStoreMixin#event-loadDateRange
And example: https://bryntum.com/examples/examples-scheduler/infinite-scroll/

We have pagination feature on the roadmap but it is not supported currently.

[clovisapp]

Thanks a lot Alex.

1- Horizontal buffering has more sense for Scheduler. Just double checking: it's possible to provide it with loadDateRange and Infinite Scroll, right ?
2- Vertical buffering has more sense for Gantt. But the feature isn't implemented yet, right ?

Do you plan to provide a vertical buffering for Gantt in a near future ?

Regards

[alex.l]

1. yes, it is
2. yes, right

For Gantt it is not really possible, because, as I said, all data required for the Engine to make project calculations.

[clovisapp]

@alex

Thanks a lot,

Yes for the Gantt interdependencies may make it harder to implement. Especially if tasks are not sorted by Start Date

Keep me posted when you think we will start to work on it

Consider this ticket as resolved

[clovisapp]

@alex.l do you have news about potential gantt vertical pagination ?

Thanks a lot

[mats]

It's unlikely we'll have this implemented before Q3 this year I'm afraid. https://github.com/bryntum/support/issues/1804

[clovisapp]

@mats
@alex

Do you have any updates about this vertical / horizontal pagination feature ?

[clovisapp]

IMO

For Scheduler:

• [Prioritary] Horizontal scroll paging (main thing to fix surely, being able to force display "people" in the left of scheduler, even if their tasks has not been loaded yet)
• [Less critical] Vertical scroll paging (only fetch tasks of specific users)

For Gantt:

• [Prioritary] Vertical scroll (main thing will be to display tasks dependencies even if not all of the content is loaded)

[clovisapp]

Looks like it's on v6 milestone, do you have any forecast for this milestone ?
https://github.com/bryntum/support/milestone/125