[riasvdv]

Summary

Table field
├── Link column type (TableCells\Link) — same settings as Link fields
│   ├── cells normalize to LinkData; linked elements batch-load on first access
│   ├── element links localize on propagation, and count as field references
│   ├── GraphQL: LinkData / LinkDataInput
│   ├── editor: summary + “Add link” / “Edit link” → the Link field popover
│   └── unavailable link types: kept as-is, locked, still removable
└── column settings: dialog → slideout with Apply / Cancel

Link field
└── normalize / validate / localize → LinkResolver (shared with Link cells)

Evidence

• Before: Table fields had no Link column type.
  After: Link cells summarize the link and edit it in the Link field popover. A cell whose link type is no longer installed keeps its value, but is locked:

  

  Column settings open in a slideout:

  

• Before: replacing references in a Link field rewrote links to unrelated elements (in_array(! $id, …) never matched) and dropped their labels.
  After:

  // tests/Feature/Field/TableLinkColumnTest.php
  replaceReferences(source, oldTargetIds: [unrelated], newTarget) → false
  replaceReferences(source, oldTargetIds: [old], newTarget)       → true
  stored link → {value: "{entry:new@site:url}", label: "Old"}
  

Related issues

• URL Field Not Available in Table Fields #16009
• Allow Entries fields as a column type in the native Table field #19343

[linear-code]

CMS-1330

[github-actions]

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[github-actions]

This PR had conflicts with 6.x. Claude attempted an automatic resolution and pushed a merge commit. Please review the merge commit carefully before approving/merging.

Claude's response

I've resolved the one conflict and committed the merge as b8a5cbe. It hasn't been pushed. No other files had conflicts, and nothing needed a # CONFLICT-REVIEW: comment.

Conflicts

• CHANGELOG.md, the Unreleased → Content Management list. 6.x split the Unreleased notes into new sections (Control Panel UI, Accessibility, Administration, Extensibility). Several lines this branch had in the conflicting block are now in those 6.x sections:

  • the activity timeline badge line
  • the three Selectize/Autosuggest combobox lines
  • the "Updated the index pages … shared UI tables" line

  I dropped this branch's copies of those so they don't appear twice. I kept the four Table-field entries for [6.x] Link columns in Table fields #19998: the Link column type, column settings opening in a slideout, cell errors naming the column, and invalid columns being flagged. They sit at the end of Content Management, before 6.x's new [6.x] Open admin table rows on double-click #19957 admin-table double-click line, and the Accessibility heading that 6.x added follows straight after.

Worth a quick look

• Section choice for the Table lines. Putting them under Content Management is my judgement call. The column-settings and invalid-settings lines describe field settings screens, so a reviewer might prefer them under Administration.

Not changed

• Entries in the Extensibility section. I left this branch's [6.x] Link columns in Table fields #19998 entries there as they were (the TableCellInterface, ElementAwareTableCellInterface, LinkResolver and Link::compact() lines), because they merged without a conflict.