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Collab editing: ensure block attributes are serializable #57025

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merged 2 commits into from
Dec 13, 2023

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ellatrix
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What?

I'm not sure if there's a better way to do this with Yjs directly. This PR converts all rich text instances in block attributes to primitive values (strings) before handing it over to Yjs.

Why?

Currently syncing of rich text attributes is broken.

How?

Testing Instructions

Testing Instructions for Keyboard

Screenshots or screencast

@ellatrix ellatrix added the [Feature] Real-time Collaboration Phase 3 of the Gutenberg roadmap around real-time collaboration label Dec 13, 2023
@ellatrix ellatrix requested a review from youknowriad December 13, 2023 15:49
@ellatrix ellatrix requested a review from nerrad as a code owner December 13, 2023 15:49
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Warning: Type of PR label mismatch

To merge this PR, it requires exactly 1 label indicating the type of PR. Other labels are optional and not being checked here.

  • Type-related labels to choose from: [Type] Automated Testing, [Type] Breaking Change, [Type] Bug, [Type] Build Tooling, [Type] Code Quality, [Type] Copy, [Type] Developer Documentation, [Type] Enhancement, [Type] Experimental, [Type] Feature, [Type] New API, [Type] Task, [Type] Performance, [Type] Project Management, [Type] Regression, [Type] Security, [Type] WP Core Ticket, Backport from WordPress Core.
  • Labels found: [Feature] Collaborative Editing.

Read more about Type labels in Gutenberg. Don't worry if you don't have the required permissions to add labels; the PR reviewer should be able to help with the task.

@ellatrix ellatrix added the [Type] Regression Related to a regression in the latest release label Dec 13, 2023
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github-actions bot commented Dec 13, 2023

Size Change: +370 B (0%)

Total Size: 1.71 MB

Filename Size Change
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ℹ️ View Unchanged
Filename Size
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github-actions bot commented Dec 13, 2023

Flaky tests detected in d042da7.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/7201812580
📝 Reported issues:

@@ -317,11 +339,15 @@ async function loadPostTypeEntities() {
},
applyChangesToDoc: ( doc, changes ) => {
const document = doc.getMap( 'document' );

Object.entries( changes ).forEach( ( [ key, value ] ) => {
if (
document.get( key ) !== value &&
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The problem is that now, the document will always be different for the "blocks" property. Meaning if a user changes the "title", the "blocks" will also be considered "modified" and it will send them over the wire unnecessarily. I think there's probably several small consequences for this.

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Because it's a new array? What if we memo it? Ensure that for the same array, we return the same "serialisable" array.

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The requirement in CRDT "maps" is to avoid calling set if there's no change. In this case, if the "blocks" object is still the same that exists in the document, we should not call set.

For now it's not sufficient to memoize just the attribute because it will create a new "blocks" property anyway so we'll endup calling the set function.


That said, right now we're not "decomposing" the blocks property in CRDT which we should be doing to allow parallel modification of blocks and merging the changes. And once we do that, it will actually become similar to "memoize" per attribute.

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The requirement in CRDT "maps" is to avoid calling set if there's no change. In this case, if the "blocks" object is still the same that exists in the document, we should not call set.

But we're not checking right now if the blocks have changed?

I'm not sure I understand much of the rest, but I want to understand if there's going to be a fundamental problem with it. 😅 The last bit of your comment sounds like it may be ok.

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But we're not checking right now if the blocks have changed?

we are here; document.get( key ) !== value in this line if the "blocks" key in the document contains the same value as the one that we receive from state, we don't call the set function.

With the changes in this PR, the "blocks" key in the document will always be different because it's created every time when setting it, so there's no way it could match the value we get from the state.

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Oh missed that sorry. I'll try to fix it.

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This should work, right? Or am I misunderstanding it? d042da7

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LGTM 👍

@ellatrix ellatrix enabled auto-merge (squash) December 13, 2023 22:54
@ellatrix ellatrix merged commit 1f89b42 into trunk Dec 13, 2023
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@ellatrix ellatrix deleted the fix/rich-text-data-collab-editing branch December 13, 2023 22:56
@github-actions github-actions bot added this to the Gutenberg 17.4 milestone Dec 13, 2023
@bph bph changed the title Collab editing: ensure block attributes are serialisable Collab editing: ensure block attributes are serializable Dec 27, 2023
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[Feature] Real-time Collaboration Phase 3 of the Gutenberg roadmap around real-time collaboration [Type] Regression Related to a regression in the latest release
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