Pagination on long list

[ElectricMaxxx]

Symfony packages

SF4,but does not matter

Symfony CMF packages

all
Subject

In an application with many children per node the treebrowser api (resource) answers with an 500. No matter if it is an timeout at the database ore on server process. But there are case where the list of children is that long, that it is hard to handle through the API and the the tree afterwards. the User won't see the complete result at all. We could go ahead and reduce nesting depth to 1 for this list. That would work, but how to know if there are to many nodes? To many siblings or to many children of one node.
So an idea would be to load 10-20 nodes at all, and give some ... to reload the next. Especially the input field would be very happy, where we need the parent only (mostly)
So my idea would be to have:

/cms/
    content/
         pages/
             ..... # here could live pate 1-9
             page 11
             page 12
             page 13
             page 14
             page 15
             page 16
             page 17
             page 18
             page 19
             page 20
            ... # here could live page 21 - XXX

[dbu]

yeah, that is a real issue. what do other tree view tools do to solve this? should pagination happen in the tree as a virtual level of the tree - with extremely long trees, even the number of pages can be too large? or should the pagination be a "endless" scrolling window under pages that loads pages as you scroll up or down?

[wouterj]

Fyi, Fancytree allows to do pagination using paging nodes: https://github.com/mar10/fancytree/wiki/TutorialLoadData#howto-allow-paging

For this to work, the resource rest bundle should be modified as well to support pagination in the backend.

[ElectricMaxxx]

Thx. Saw such an pagination when working with pimcore last week.
Yea the backend ..