Settings are lost on 3.1

[timkelty]

Any section/category type field settings seem to be lost after a 3.1 upgrade.

Inspecting the HTML source on the field settings page, it would seem it is now expecting a UID, not an ID.

Not sure, but maybe related to this line from the 3.1 release notes:

System user permissions now reference things by their UIDs rather than IDs (e.g. editEntries: rather than editEntries:).

Seems problematic, and probably not just isolated to this plugin.

[timkelty]

This seems to be the offending commit, changing the key of Element's sources to be UIDs: craftcms/cms@4f5a9e3

[sebastian-lenz]

Hi, thank you for reporting this. Indeed, it seems like the Craft core has changed the formatting of the key property of the element sources array as obtained by craft\base\ElementInterface::sources(). Before it contained the id of the entry type and was something like

section:8

After the update to Craft 3.1.* the key is a string containing the uid like

section:a10ef3a4-0b28-4831-b6b6-195167b87212

Therefore all field settings of the link field saved before the 3.1 update become invalid and have to be reconfigured.

[sebastian-lenz]

Okay, I've added a simple validator to rewrite the settings on load. A new release is out containing the fix. However, if the field has been saved in Craft 3.1 the settings are already lost.