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docs(formula): document 7.6 expression syntax changes (ADR-0032) - #1527
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Update the objectstack-formula skill and the formula guide for the 7.6 /
ADR-0032 behavior so AI + human authors stop writing the old form:
- Predicates are bare CEL — explicit warning against `{record.x}` brace-in-CEL
(the #1491 root cause; `{…}` is a CEL map literal → parse error).
- Malformed expressions no longer fail silently: `objectstack build` fails with
a located, schema-aware message, and the runtime throws (not silent false).
Mentions the `validate_expression` agent tool.
- Template holes: `{{ path | formatter[:arg] }}` whitelist (currency/number/
percent/date/datetime/upper/lower/trim/truncate/default/json) with defined
value→string semantics; single-brace `{x}` is not a valid hole.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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What
Updates the
objectstack-formulaskill and the formula guide for the 7.6 / ADR-0032 expression changes, so AI and human authors stop writing the pre-7.6 form (Decision 4 — "correctness is training data"). Docs/skills only.Changes
<Callout>against{record.x}brace-in-CEL (the Record-change trigger plugin loads but flows never fire on data writes (7.4.1) #1491 root cause —{…}is a CEL map literal → parse error). Braces belong only in{{ }}templates.objectstack buildnow fails with a located, schema-aware message and the runtime throws. Mentions thevalidate_expressionagent tool.{{ path | formatter[:arg] }}whitelist (currency/number/percent/date/datetime/upper/lower/trim/truncate/default/json) + value→string semantics; single-brace{x}is not a valid hole.(
references/shared/expression.mdxis auto-generated from the spec — left untouched.)🤖 Generated with Claude Code