Readonly view

[chillu]

Overview

Readonly block views become important for viewing history of a page with all of its blocks. Currently that's not working. The SS4 page history only shows a "none" label, even with two (published) content blocks associated to that version.

Acceptance Criteria

• I can see all the information of the editable block overview, but as readonly fields
• The position is displayed as an explicit readonly field
• The view works with all core form fields in SilverStripe (excl. GridField, see https://github.com/silverstripe/silverstripe-framework/issues/3357)

Notes

• Designs: https://projects.invisionapp.com/share/5NEHOBLYZ#/screens/258945845_Blocks1_-_Page_History
• Only needs to work in Entwine-based views (which can include React fields like UploadField or TreeDropdownField)
• If there's significant work in getting form field readonly views going, split out into other cards
• Excludes adding the link for "block history", see listing versions of a block
  • assuming 1 level deep

[robbieaverill]

It’s worth noting that block history does work, just not page history at this point

[robbieaverill]

I just tested the history for blocks on SS 4.1 and there have been some regressions. Will isolate and log an issue shortly.

[NightJar]

Just adding tests for the PR at https://github.com/dnadesign/silverstripe-elemental/pull/224

[robbieaverill]

Done in https://github.com/silverstripe/silverstripe-admin/pull/511 and #224