[legal-s]

SUMMARY

The page size of the CRUD list views was hardcoded as const PAGE_SIZE = 25; in every list page — 13 independent declarations, no way to change it without editing each file.

This introduces a LIST_VIEW_PAGE_SIZE config key, exposed to the frontend through FRONTEND_CONF_KEYS, and a single shared PAGE_SIZE constant in src/views/CRUD/constants.ts that every list page now imports.

The key is named LIST_VIEW_PAGE_SIZE rather than PAGE_SIZE because superset/config.py feeds the flat app.config namespace shared with Flask and Flask-AppBuilder, where every neighbouring key is domain-scoped (SAMPLES_ROW_LIMIT, FILTER_SELECT_ROW_LIMIT, FAB_API_MAX_PAGE_SIZE).

The default stays at 25, so behaviour is unchanged on merge. Deployments set their own value in superset_config.py or through the Helm configOverrides.

Out of scope on purpose:

• features/datasets/constants.ts keeps its own PAGE_SIZE, since ChangeDatasourceModal imports it for a TableView and an API payload.
• views/CRUD/utils.tsx keeps PAGE_SIZE = 5 for the welcome page cards.
• components/Select/constants.ts keeps DEFAULT_PAGE_SIZE = 100 for the async dropdown infinite scroll.

PLAID-153375

TESTING INSTRUCTIONS

Automated:

• npx jest src/views/CRUD/constants.test.ts — covers both branches, missing key falls back to 25, LIST_VIEW_PAGE_SIZE: 10 is honoured.
• The 19 existing snapshots asserting page_size:25 on the list pages stay green without edits: the Jest setup leaves data-bootstrap empty, so conf is {} and the fallback applies. 132 tests pass across the 13 list pages plus ChangeDatasourceModal.
• tsc --noEmit clean.

Manual:

1. Set LIST_VIEW_PAGE_SIZE = 10 in superset_config.py, restart the server.
2. Open /chart/list/ — 10 rows, footer reads 1-10 of N, page count recomputed on N/10.
3. Network tab — the request goes out as /api/v1/chart/?q=(...,page_size:10) and the returned count is still the total.
4. Browse to page 2 then page 3 — correct offsets, no duplicate or missing row.
5. Check a second list, for instance /dashboard/list/.
6. Open /chart/list/?pageIndex=7 (a bookmark from the 25-per-page era) — the view falls back to page 0 instead of rendering empty.
7. Remove the key, restart — back to 25 rows.

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API