feat(runtime-web): buildGrid() — metadata-driven grid columns at runtime#40
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The runtime twin of the tanstackGrid() codegen: builds grid columns + config by walking a loaded MetaObject's fields and views at runtime, with no code generation. Honors a dataGrid layout (@columns/@pageSize/sort/@filterable) when present, else falls back to all fields, so it works for any object. Mirrors the columns-file codegen derivation (humanized headers, view-subtype cell hint). 3 tests; full runtime-web suite green (33/33), typecheck clean. First step of the runtime metadata-driven grid program (see docs/superpowers/specs/2026-06-16-…). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Design for the first vertical slice (list + sort + pagination, no codegen): a generic metadata-driven Fastify list endpoint + a useMetaGrid hook feeding the existing <EntityGrid>, proven by running the metadata endpoint against the same api-contract-conformance corpus the generated routes pass (codegen ≡ metadata, a third conformance lane). Decomposes the larger runtime-UI program (read path = grid; write path = forms + validation + writes endpoint). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
Adds
buildGrid()to@metaobjectsdev/runtime-web: the runtime twin of thetanstackGrid()codegen. It builds grid columns + config by walking a loadedMetaObject's fields and views at runtime — no code generation.dataGridlayout (@columns/@pageSize/ default sort /@filterable) when present; otherwise falls back to all fields, so it works for any object.columns-filecodegen derivation (humanized headers, the field's view subtype as the cell-renderer hint) so a runtime-built grid matches a generated one.@metaobjectsdev/metadata.Why
MetaObjects' thesis is "one model, two delivery modes — generate the code, or drive behavior live from the model." The grid has been codegen-only; this is the first building block of the runtime delivery mode.
Scope
This is Slice 1's column builder only — a tested utility, not yet a turnkey runtime grid. The full runtime grid (metadata-driven list endpoint +
useMetaGridhook wired to<EntityGrid>, then the form/validation write-path) is designed indocs/superpowers/specs/2026-06-16-runtime-metadata-grid-slice1-design.mdand built in later slices. Including the spec here documents the program.Tests
dataGriddrives columns/sort/pageSize; generic on a differentInvoiceobject).runtime-websuite green (33/33); typecheck clean.🤖 Generated with Claude Code