[data grid] Tree data children pagination

[daviesgeek]

The problem in depth

I'm trying to figure out how to properly paginate children rows when the grid is displaying tree data. It doesn't look like there's support for this use case. I have a case where I might need to support up to a few hundred children rows and those need to be paginated, as i can't fetch all of them at one time.
Is this 1) something that's supported and 2) if not, is this a use case that's on the roadmap for support? 3) if none of this, is there a good way for me to support this?

(I didn't think a live example super important, so didn't include one but i can if needed)

Your environment

`npx @mui/envinfo`

 System:
    OS: macOS 14.5
  Binaries:
    Node: 18.16.0 - ~/.nvm/versions/node/v18.16.0/bin/node
    npm: 9.5.1 - ~/.nvm/versions/node/v18.16.0/bin/npm
    pnpm: Not Found
  Browsers:
    Chrome: 128.0.6613.138
    Edge: 128.0.2739.79
    Safari: 17.5
  npmPackages:
    @emotion/react: ^11.10.6 => 11.11.1 
    @emotion/styled: ^11.10.6 => 11.11.5 
    @mui/base:  5.0.0-beta.24 
    @mui/core-downloads-tracker:  5.16.6 
    @mui/icons-material: ^5.8.2 => 5.14.18 
    @mui/lab: ^5.0.0-alpha.84 => 5.0.0-alpha.153 
    @mui/material: ^5.15.20 => 5.16.6 
    @mui/private-theming:  5.14.18 
    @mui/styled-engine:  5.14.18 
    @mui/styles: ^5.15.20 => 5.15.20 
    @mui/system: ^5.15.20 => 5.16.6 
    @mui/types:  7.2.9 
    @mui/utils:  5.16.6 
    @mui/x-data-grid:  7.12.1 
    @mui/x-data-grid-premium: 7.12.1 => 7.12.1 
    @mui/x-data-grid-pro:  7.12.1 
    @mui/x-date-pickers:  6.18.1 
    @mui/x-date-pickers-pro: 6.18.1 => 6.18.1 
    @mui/x-internals:  7.12.0 
    @mui/x-license:  7.12.0 
    @mui/x-license-pro:  6.10.2 
    @types/react: ^18.0.10 => 18.2.38 
    react: ^18.1.0 => 18.2.0 
    react-dom: ^18.1.0 => 18.3.1 
    typescript: ^4.7.2 => 4.9.5 

Search keywords: data grid, tree view, server side data, pagination
Order ID: 87473

[michelengelen]

Hey @daviesgeek ... we aren't currently supporting pagination of child rows.
@MBilalShafi do you know if we can provide a workaround for this?

[MBilalShafi]

Nested lazy-loading is planned for the future after the root-level lazy-loading is completed.
Here's the issue that covers this specific request: #14527
Feel free to share your requirements and (or) upvote the issue to see it land faster.

do you know if we can provide a workaround for this?

I don't think so there's a straightforward workaround for this in the userland as of now since we need to make some changes in the internal DOM structure before supporting that.

@arminmeh Should we set some groundwork in #13878 to help smoothen the work on #14527?

[daviesgeek]

Thank you both, appreciate the response