TYPO3 Core

I wonder if that could be an extension to the 'ctrl' array of the TCA of any table.

Different presets could be configured:

[
  'downloadPresets' => [
      'personalData' => ['first_name','last_name','city','zip','email']
      'interests'    => ['profile','bio','hobby'],
      'meta'         => ['uid', 'importID', 'last_login']
  ]
]

Then the popup could offer a checkable list of all presets, so the user could check either one or multiple of these presets.

If fields occur in multiple presets, they would be collapsed into only being used once.

Extensions could then both override core/foreign/third-party presets.

Combined with UserTSConfig maybe even user-specific presets could be implemented, if those also get evaluated for presets.

(Ideally we'd add proper events to populate/evaluate the RecordDownloadSettings Fluid template, and evaluate them in the action, so additional customization can be achieved by adding other things and not just presets, like: custom filters, record transformations, additional download formats, ...)

What do you think? It's a larger scope, but I'd be pretty interested in implementing this.

I would recommend to not extend TCA for such a specific feature, but rather use TSconfig to customize this functionality.

Why? TCA is loaded on every every request (frontend, BE Ajax), and we do not need this. There are certain things we can put into TCA, but I'd say not this.

Understood. I've got to check if I can access TSconfig within the Controller populating the modal as well as the actual download request (TCA would be accessible easily due to reasons you mentioned).

Thanks for your comments.

The much bigger approach of Galvin to combine TsConfig with some presets and a Hook to manipulte the settings by PHP would indeed be very smart.
Maybe we could join forces. I also could offer some help.

Patch set 2 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/83713

Patch set 3 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/83713

Patch set 4 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/83713

Patch set 5 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/83713

Patch set 6 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/83713

Patch set 7 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/83713