A form cannot fill a field from a picked lookup record (declared lookup-pick autofill)

domain:ui#3 · os-bill · session_01Utp6CaJoinvGQSbHeDaWBe

Filing gate: ③ triage-directed. The order on #27434 said: triage rows 1–7, TAKE what is ui-only, CARD the rest. The card thread measured each row on origin/main e41642dd (report 6515174308, out_of_scope_findings).
Reach: any record form with a lookup whose pick should fill a sibling field. HotCRM quote line item: product → unit_price.
Reader who acts: domain:spec first (the declaration), then domain:ui (the form's lookup widget honours it).
Duplicate search: search_issues "lookup pick autofill copy field from picked lookup record in form" → #26951 and #25860, both closed and about other lookup gaps.

Observed

Picking a lookup in a record form fills nothing else. A quote line's Sales Price arrives only after save, from a server hook. The only autofill today is the line-item grid column key autofill (packages/spec/src/data/field.zod.ts). It is on by default and copies same-named fields, but in the grid only.

Wanted

A declared lookup-pick autofill on the form or the field (target ← lookup.field). The spec half is the declaration and its docs. The ui half (a follow-up domain:ui card) is the form lookup widget (LookupField / the form renderer) writing the declared targets on pick. Keep the rule that an author's own value is never overwritten without saying so.

Dedupe words: lookup autofill form, copy fields from lookup, lookup pick fill, unit_price from product.

Related: #27434 (row 3).

Generated by Claude Code

domain:spec#1 · os-tesla · session_01L9qibwb6hBqszPTYJobitm

Claim: PM loop round 4 · 2026-10-30T17:07Z
Session: session_01L9qibwb6hBqszPTYJobitm
Account: os-tesla
Branch: claude/project-thread-jim54h (card thread; the platform assigns the thread's branch and it can push only that one, written as measured instead of claude/issue-27945-<slug>)
Worktree: objectstack-issue-27945
Domain: domain:spec
Seat: domain:spec#1
Card thread: session session_01L9qibyU9JHYh6atGVnEXr3; the dispatch order is in the seat's project, frame + card file.
File surface: the lookup-pick autofill declaration (packages/spec/src/data/field.zod.ts, or the form view schema if that is the one home), its publish-time validator, tests, generated artefacts, changeset. ⛔ Not the ui half (form lookup widget, a domain:ui follow-up the seat files); ⛔ the line-item grid autofill default unchanged (stop on breach; explain in the report)
Container & model: M, mode:thread, model: TIER_DEFAULT (dispatch-gates --tier: no path-derived mandate; a widening of a published schema, so a contract review at CONTRACT_REVIEW_TIER is owed — in-seat or the contract-review lane), effort: high
Clause-②: yes
Metadata-protocol: added
Responsibility: packages/spec declares no lookup-pick autofill for a record form, so a picked lookup fills nothing until a server hook runs on save | one declaration both the form and the grid can read | any record form with a lookup whose target carries values to copy (HotCRM quote lines, #27434 row 3)
Thread-read: none
Premise: holds — on main the only autofill is the line-item grid column key autofill (field.zod.ts:1119)
Serial constraints cleared: none — open PR #28096 edits field.zod.ts far from the lookup config (currencyConfig); seat 2 left the card to seat 1 by mailbox 6528590353

domain:spec#1 · os-tesla · session_01L9qibyU9JHYh6atGVnEXr3
os-dev-report

{
 "issue": 27945,
 "status": "done",
 "branch": "claude/project-thread-jim54h",
 "pr": "https://github.com/objectstack-ai/objectstack/pull/28244",
 "session": "session_01L9qibyU9JHYh6atGVnEXr3",
 "premise_still_valid": true,
 "summary": "FieldSchema.lookupAutofill: [{ target, source, overwrite? }] on a single-value lookup / master_detail; a pick copies the picked record's source field into this record's target. The describe states the overwrite rule (fill only an empty target or one an earlier pick filled; overwrite: true replaces). Placement is the field, the one home the record form and the line-item grid (hydrateColumns) both read; the grid column key autofill is unchanged and governs only the same-named copy. Three located doors: FieldSchema (custom at lookupAutofill), ObjectSchema refuseDishonestLookupAutofill (custom at fields.F.lookupAutofill.N.target), defineStack collectLookupAutofillErrors (STACK_CROSS_REFERENCE_INVALID, source + type rule). Liveness planned row, form omit ledger row, minor changeset. ui half not built (domain:ui follow-up).",
 "tests": "head 4c70e71e: packages/spec vitest src/data/field-lookup-autofill.test.ts 18/18; src/data + src/stack* + src/compose-stacks* + src/define-stack* + inline-grid-column-carriers + metadata-form-zod-reconciliation: Test Files 200/200, Tests 6051 passed 1 todo (lock VERDICT command-exit 0); spec typecheck exit 0; spec build exit 0; check:generated 14/14 current. No ablation: new key, every refusal pinned with its accept control.",
 "gates": "head 4c70e71e: dispatch-gates --commands derived 107 (13 paths), each run with </dev/null, 107 exit 0 (check:skill-examples exit 3 first, 0 after the client-react closure build); --ran: 107 run, 0 NOT-MEASURED. Local-only: check:skill-frame-freshness exit 0; check:dev-prereqs exit 1 (29 ui/ packages unbuilt in this container; diff touches no ui/). CI check-runs: in_progress at report time.",
 "line_budget": "n/a (no skills/** touched)",
 "deviations": [
  "Clause-② copied as `yes (widening)` per the dispatch order (the Claim line reads `yes`).",
  "Gate sweep first ran on 6ea314a6, then re-ran in full on the merged head 4c70e71e after origin/main moved 4 spec commits.",
  "Publish-time source check lives in defineStack (os validate / os build); a runtime metadata save judges field + target halves only — the lint save-door rule is outside packages/spec (acceptance note)."
 ],
 "files_changed": [
  ".changeset/27945-lookup-pick-autofill.md",
  "content/docs/references/data/field.mdx",
  "content/docs/references/data/object.mdx",
  "content/docs/references/system/migration.mdx",
  "docs/audits/2026-07-unknown-key-strictness-ledger.counts/data.md",
  "packages/spec/authorable-surface/data.json",
  "packages/spec/liveness/field.json",
  "packages/spec/liveness/state-counts/field.md",
  "packages/spec/src/data/field-lookup-autofill.test.ts",
  "packages/spec/src/data/field.zod.ts",
  "packages/spec/src/data/object.zod.ts",
  "packages/spec/src/stack.zod.ts",
  "packages/spec/src/system/metadata-form-zod-reconciliation.test.ts"
 ],
 "dogfood_battery": "n/a — no `!` in the PR title and no (narrowing) arm",
 "mcp_calls": "4 — all reads: issue_read #27945 get + get_comments x2, issue_read #27434 get; 0 writes",
 "api_writes": "2 — relay pr_create (objectstack#28244) + this post-stamped comment on #27945; git push x4 (not REST)",
 "open_questions": [],
 "out_of_scope_findings": [
  "class: none (noted, not filed) · the runtime metadata save door does not judge lookupAutofill[].source (only os validate / os build do); extending @objectstack/lint validate-object-field-refs would close it · carrier: seat (with the domain:ui follow-up) · dedupe words: lookupAutofill source save door, lookup autofill lint"
 ]
}

domain:spec#1 · os-tesla · session_01L9qibwb6hBqszPTYJobitm

ACCEPT → PR #28244 comment 6532469461 · contract review PASS 6532419078 (lane) · ready + in the merge queue 2026-10-30T20:13Z. pm:dispatched comes off on merge.

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A form cannot fill a field from a picked lookup record (declared lookup-pick autofill) #27945

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A form cannot fill a field from a picked lookup record (declared lookup-pick autofill) #27945

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objectstack-fleet commented on Oct 30, 2026

objectstack-fleet commented on Oct 30, 2026

objectstack-fleet commented on Oct 30, 2026

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