[wp-trac] [WordPress Trac] #60671: If you hook some blocks with Block Hooks API, slashes are stripped from template part block attributes

[WordPress Trac]

#60671: If you hook some blocks with Block Hooks API, slashes are stripped from
template part block attributes
--------------------------+------------------------------
 Reporter:  karolmanijak  |       Owner:  Bernhard Reiter
     Type:  defect (bug)  |      Status:  closed
 Priority:  normal        |   Milestone:  6.5
Component:  Revisions     |     Version:  trunk
 Severity:  major         |  Resolution:  fixed
 Keywords:  has-patch     |     Focuses:
--------------------------+------------------------------
Changes (by Bernhard Reiter):

 * status:  assigned => closed
 * resolution:   => fixed


Comment:

 In [changeset:"57790" 57790]:
 {{{
 #!CommitTicketReference repository="" revision="57790"
 Block Hooks: Use new Templates Controller filter instead of action.

 This changeset adds a new `rest_pre_insert_{$this->post_type}` filter in
 the `WP_REST_Templates_Controller`, where it is applied to the return
 value of the `prepare_item_for_database` method. (This is consistent with
 the `WP_REST_Post_Controller`, where that filter has existed before.)

 The new filter is then used to inject hooked blocks into the template (or
 template part) content received via the endpoint, prior to persisting it
 to the database.

 This supersedes the previous mechanism, which was using the
 `rest_after_insert_{$this->post_type}` ''action'', from which it performed
 an additional `wp_update_post` call to update the template (part) content
 with the hooked blocks injected. The new technique eschews that additional
 call and the resulting extra revision it created, as well as a problem
 with regard to duplicated escaping and sanitization, which had caused some
 special characters to be garbled.

 Props tomjcafferkey, gziolo, swissspidy, karolmanijak.
 Fixes #60671.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/60671#comment:11>
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