Cross-Reference: Custom template support for AI-generated Office documents

[LexioJ]

Summary

This is a cross-reference to a feature request filed in nextcloud/richdocuments:

➡️ nextcloud/richdocuments#5431 — Custom template support for AI-generated Office documents (DOCX, XLSX, PPTX)

Context for this repo

When the Nextcloud Assistant generates Office documents (DOCX, XLSX, PPTX) from a user prompt, the resulting files always use default Collabora styling. There is currently no way for users or administrators to select a custom template so that AI-generated documents match organizational branding or formatting standards.

While the core implementation work belongs in nextcloud/richdocuments (where the TaskProcessing providers and TemplateManager live), a UI change is also required in this repository: a template selection step needs to be added to the Assistant’s document generation dialog, similar to the template picker already present in the Files “+” / new document flow.

What would need to change here

• Add an optional template selector to the DOCX/XLSX/PPTX generation dialog in the Assistant UI.
• The selector would query available templates via the existing TemplateManager API in richdocuments.
• The selected templateId would be passed as an additional input parameter to the respective TaskProcessing provider.
• When no template is selected, the current default behavior is preserved (fully backward-compatible).

Related

• nextcloud/richdocuments#5431 — Main feature request with full implementation proposal (primary issue)
• nextcloud/richdocuments PR #3798 — PDF Template Workflow (introduces TemplateFieldService, the technical foundation)
• nextcloud/server#22426 — File templates (broader unified template handling)

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This cross-post is intended to make the Assistant team aware of the UI work involved. All technical discussion should happen in the primary issue linked above.