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table-state

Manage Table v9 state in Ember so table changes reach the screen. Covers tracked properties, external atoms that hold state, controlled updates, and where values must be read for Glimmer to track changes.

OriginalShow the original description

Read and control Table v9 state in ember. Use for tracked reads, subscriptions, controlled slices, and framework-specific reactive boundaries.

See how to install

Good for

  • Fixing page numbers that do not update on screen
  • Managing pagination through tracked properties
  • Sharing table state through external atoms
  • Reviewing reactive reads in template getters

Files included (2)

  • SKILL.md3.4 KB
  • references/reactivity.md3.1 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

Load intent load @tanstack/table-core#table-state first for shared ownership, initialization, updater, and reset rules.

Glimmer tracks Table APIs, atom reads, and store-property reads inside template-consumed getters. A value cached outside tracked consumption is only a snapshot. There is no table.Subscribe or selector argument to useTable; table.store.subscribe is intentionally a no-op and cannot drive rendering.

Controlled tracked setup

import Component from '@glimmer/component'
import { tracked } from '@glimmer/tracking'
import { on } from '@ember/modifier'
import {
  rowPaginationFeature,
  tableFeatures,
  useTable,
  type PaginationState,
} from '@tanstack/ember-table'

const features = tableFeatures({ rowPaginationFeature })
const columns = [{ accessorKey: 'name' }]
const data = [{ name: 'Ada' }]

export default class PageStatus extends Component {
  @tracked pagination: PaginationState = { pageIndex: 0, pageSize: 10 }
  table = useTable(this, () => ({
    features,
    columns,
    data,
    state: { pagination: this.pagination },
    onPaginationChange: (next) => {
      this.pagination =
        typeof next === 'function' ? next(this.pagination) : next
    },
  }))

  get pageNumber() {
    return this.table.atoms.pagination.get().pageIndex + 1
  }

  nextPage = () => this.table.nextPage()

  <template>
    <button type='button' {{on 'click' this.nextPage}}>Page
      {{this.pageNumber}}</button>
  </template>
}

Reactive boundaries

  • Read tracked values inside the options thunk and assign callback results back to their tracked owner. Mutating this.pagination.pageIndex++ does not notify the thunk.
  • features and atoms are construction-time inputs. Updating ordinary live options does not replace the feature set or atom owners; create them once before useTable.
  • Pass the component as the owner for lifecycle cleanup when external atoms are used. The standalone one-argument thunk form remains supported.
  • Use the adapter's createAtom for external Glimmer-reactive ownership. Read it in a tracked getter and use feature APIs or the external atom to write.
  • Keep features, columns, and data stable. Call receiver-dependent methods through getters or helpers rather than passing extracted methods to templates.

Read for the task

For advanced reactive boundaries, shared atoms, or detailed subscription examples, read reactivity. For construction or rendering setup, read getting-started.

API discovery

Inspect node_modules/@tanstack/ember-table/declarations/index.d.ts, use-table.d.ts, signal.d.ts, and FlexRender.d.ts. Core feature APIs are in node_modules/@tanstack/table-core/dist/features/.

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