[wp-trac] [WordPress Trac] #47779: Add a filter to `get_item_schema()` to be able to extend the schema of existing properties

[WordPress Trac]

#47779: Add a filter to `get_item_schema()` to be able to extend the schema of
existing properties
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 Reporter:  luisherranz                          |       Owner:  kadamwhite
     Type:  enhancement                          |      Status:  accepted
 Priority:  normal                               |   Milestone:  5.4
Component:  REST API                             |     Version:  4.7
 Severity:  trivial                              |  Resolution:
 Keywords:  has-patch dev-feedback needs-unit-   |     Focuses:  rest-api
  tests                                          |
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Comment (by luisherranz):

 Awesome :)

 Do you have any idea about how to solve the test problem with
 `rest_api_init`?

 I don't like neither of these solutions:
 - Add the filter before `parent::setUp()`.
 - Do the `setUp` again in the test.
 - Do the `rest_api_init` again in the test.
 - Don't do `setUp` at initialization and move it inside each individual
 test.
 - Create a new file for filters that depend on `rest_api_init`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/47779#comment:10>
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