Duplicating Entry Doesn't Create a Unique UID

[TonyDeStefano]

Description

When you select an Entry and choose "Duplicate" from the action menu, it creates a new entry with the same UID.

Steps to reproduce

1. Create an entry
2. Check the box next to the entry
3. Choose "Duplicate"

This query shows current duplicates in the database:

SELECT uid, count(*) AS `count` 
FROM elements 
GROUP BY uid 
HAVING `count` > 1

Additional info

• Craft version: 3.1.34.2
• PHP version: 7.2.11

[TonyDeStefano]

"Save as New Entry" does the same thing. We end up with two elements that have the same UID.

[brandonkelly]

I had noticed this bug during 3.2 development, but thought it was limited to 3.2 alpha releases, so while 3.2 has a migration to fix duplicate UIDs, it only runs if you’re coming from 3.2.0-alpha.6 or later.

So I just added a new console command that you will be able to run once Craft 3.2.8 is released, which will run the same migration code.

./craft utils/fix-element-uids

To get the fix early, change your craftcms/cms requirement in composer.json to:

"require": {
  "craftcms/cms": "dev-develop#0e0c89e4684e07d784a1e4d5bdcaa3395ee07a54 as 3.2.7",
  "...": "..."
}

Then run composer update.

[TonyDeStefano]

We are unable to upgrade to 3.2 right now. I submitted a PR for 3.1.

[brandonkelly]

We aren’t releasing additional 3.1 releases. You’ll just have to point composer.json to your fork with the fix, until you are ready to update to 3.2.

[ryanpcmcquen]

@brandonkelly, this is a critical bug, hopefully you'll reconsider implementing some fix for this on 3.1.

[brandonkelly]

Craft 3.1 isn’t an LTS release. As said you are welcome to use a fork with your own fix until you’re ready to update to 3.2.