Synced patterns

A synced pattern is a block reused in many posts. While someone edits the pattern itself, anyone using it in a post sees a notice that it is being changed.

How it works #

A core/block block with a ref reads the room postType/wp_block:{ref} with usePresenceUsers().
Every copy of the same pattern in the editor shares one read.
The person editing the pattern writes their editor- row from the pattern's own edit screen or the Site Editor.
Reading the room requires edit_post on the pattern, and the notice cannot be dismissed while they are there.
Turn it off with Synced patterns on Settings > Presence API.

_{Source: synced-patterns.php · index.js}

Check your understanding #

Who sees the notice that a synced pattern is being edited?

Only someone who can edit the pattern, since reading its room requires edit_post on it.

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