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@scruffian scruffian commented Feb 2, 2023

What?

This creates a fallback navigation CPT when there isn't one. Fixes #47058

Why?

This should simplify several things

  • we no longer will need to create a new menu when a user tries to edit the fallback
  • we should be able to simplify the code around fallbacks, drafts and undo levels

How?

We automatically create a wp_navigation CPT in both the editor and the frontend, if a user doesn't have one.

Testing Instructions

  1. Go to wp-admin/edit.php?post_type=wp_navigation&paged=1
  2. Delete all your navigation menus
  3. If you have any classic menus, delete them as well
  4. Switch to a theme with a navigation block in a template
  5. Open the frontend of the site
  6. Confirm that you see a page list in the navigation block
  7. Go to wp-admin/edit.php?post_type=wp_navigation&paged=1 and check that you see a CPT called "navigation"
  8. Delete this new navigation
  9. Open the site editor
  10. Confirm that you see a page list in the navigation block
  11. Go to wp-admin/edit.php?post_type=wp_navigation&paged=1 and check that you see a CPT called "navigation"

Testing Instructions for Keyboard

As above.

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github-actions bot commented Feb 2, 2023

Flaky tests detected in 3a5252b.
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/4192731842
📝 Reported issues:

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github-actions bot commented Feb 3, 2023

Size Change: +30 B (0%)

Total Size: 1.33 MB

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compressed-size-action

@scruffian scruffian added the [Block] Navigation Affects the Navigation Block label Feb 3, 2023
@scruffian scruffian self-assigned this Feb 3, 2023
@scruffian scruffian marked this pull request as ready for review February 3, 2023 10:51
@draganescu
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A problem with this is that I cannot ever be in a state where I have no block menus. In the editor if I delete the last block navigation it will just create a new one with a page list in it.

@scruffian
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A problem with this is that I cannot ever be in a state where I have no block menus. In the editor if I delete the last block navigation it will just create a new one with a page list in it.

Yes, when you try to use it. Is that a problem?

@scruffian scruffian force-pushed the add/create-fallback-navigation branch from c536475 to 3b5a0a9 Compare February 3, 2023 13:53
@draganescu
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Actually I am wrong @scruffian because if I have block navigation then the block has a ref and when I delete the menu that the ref points to I get the warning. If there are no menus that I can switch to, I see the warning and I can:

  • create a new menu, great
  • delete the navigation block and insert a new one, case in which I'll end up with one navigation containing a page list

Cool! 👍🏻

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@draganescu draganescu left a comment

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If I have a menu with a ref and the ref'd menu is deleted, when I open the template part I see the warning briefly and then the new menu gets created.

  • We should only autocreate if there is no ref.

@scruffian
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We should only autocreate if there is no ref.

Good catch. Fixed in 4fd95cb

@draganescu draganescu dismissed their stale review February 7, 2023 14:25

Problem fixed.

@draganescu
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@scruffian this PR should also remove the current page list fallback behavior . 🙏🏻

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I think this is ready for another review.

@scruffian scruffian force-pushed the add/create-fallback-navigation branch from 3a15b83 to 3d041f2 Compare February 9, 2023 14:08
@draganescu
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  • If we have no block nav but one classic nav, rendering the front end auto imports the classic menu, but opening in the editor does not it creates the fallback nav and does not import the classic menu

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I added a commit to fix the tests.

@scruffian scruffian force-pushed the add/create-fallback-navigation branch from 716f4ec to e072b47 Compare February 10, 2023 12:28
@scruffian
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If we have no block nav but one classic nav, rendering the front end auto imports the classic menu, but opening in the editor does not it creates the fallback nav and does not import the classic menu

This is not what happens in my testing.

@scruffian scruffian force-pushed the add/create-fallback-navigation branch 2 times, most recently from 01988b7 to 083adec Compare February 13, 2023 14:13
@scruffian scruffian force-pushed the add/create-fallback-navigation branch from 1d59818 to 3a5252b Compare February 16, 2023 09:52
@scruffian scruffian enabled auto-merge (squash) February 16, 2023 09:52
@scruffian scruffian disabled auto-merge February 16, 2023 17:07
@TimothyBJacobs
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@draganescu It's not very RESTful, I'd probably just make a one-off endpoint in wp-block-editor/v1.

@scruffian scruffian force-pushed the add/create-fallback-navigation branch from 3a5252b to f5fe083 Compare February 21, 2023 09:19
@scruffian scruffian merged commit 8548085 into trunk Feb 21, 2023
@scruffian scruffian deleted the add/create-fallback-navigation branch February 21, 2023 09:55
@github-actions github-actions bot added this to the Gutenberg 15.3 milestone Feb 21, 2023
@draganescu
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@TimothyBJacobs a one off endpoint in wp-block-editor/v1 would be great too, as long as is API code that runs serverside and handles all this weirdness that is so prone to problems on the clientside.

@getdave
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getdave commented Feb 28, 2023

@draganescu Right so a REST endpoint that you can query and say get me a fallback menu and it will return one. Can be used in editor and front of site.

This would

  • avoid maintaining complex and brittle logic in two places
  • allow the editor code to be more performant
  • allow for unit tests rather than e2e tests to validate behaviour
  • allow for a single conditional around "does it have inner blocks already"

@scruffian scruffian restored the add/create-fallback-navigation branch February 28, 2023 16:53
@scruffian scruffian deleted the add/create-fallback-navigation branch February 28, 2023 17:05
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This PR creates multiple wp_navigation CPTs when there are multiple blocks in the same post. Reverting in #48602 until we have a way to deal with that problem.

dsas added a commit to Automattic/jetpack that referenced this pull request Jun 11, 2025
This code doesn't work, and even if it did it's a hack that is probably
overly broad.

In the past a fallback navigation was created when one didn't exist.
This used to be created in `render_block_core_navigation` (see
WordPress/gutenberg#47684) but no longer happens.

This has lead to a number of blogs having this fallback navigation
created when an a12 visited their site. This means that the a12s details
- wpcom username, email address etc are in the generated export file.

It feels unhelpful to have this in the export file, partly because it
might need explaining if the legal time share an export as part of a
legal request, and partly because a12s data is shared to anyone
exporting an affected blog.

This change tries to remove the information when generating the export
file, but is somewhat hampered by a lack of relevent hooks and also by a
way of identifying current and former a12s. Instead it chooses a
relevant SQL generation, hackily identifies whether the query is the
relevant part of the export, and then modifies it to add some SQL
excluding wp_navigation post types that were created by users that are
not currently part of the blog.

See also https://linear.app/a8c/issue/DOTCOM-13020
dsas added a commit to Automattic/jetpack that referenced this pull request Jun 20, 2025
This code doesn't work, and even if it did it's a hack that is probably
overly broad.

In the past a fallback navigation was created when one didn't exist.
This used to be created in `render_block_core_navigation` (see
WordPress/gutenberg#47684) but no longer happens.

This has lead to a number of blogs having this fallback navigation
created when an a12 visited their site. This means that the a12s details
- wpcom username, email address etc are in the generated export file.

It feels unhelpful to have this in the export file, partly because it
might need explaining if the legal time share an export as part of a
legal request, and partly because a12s data is shared to anyone
exporting an affected blog.

This change tries to remove the information when generating the export
file, but is somewhat hampered by a lack of relevent hooks and also by a
way of identifying current and former a12s. Instead it chooses a
relevant SQL generation, hackily identifies whether the query is the
relevant part of the export, and then modifies it to add some SQL
excluding wp_navigation post types that were created by users that are
not currently part of the blog.

See also https://linear.app/a8c/issue/DOTCOM-13020
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Navigation: Create first menu seamlessly

6 participants