[wp-trac] [WordPress Trac] #38916: REST API: Can't set existing post format if theme does not support it

[WordPress Trac]

#38916: REST API: Can't set existing post format if theme does not support it
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 Reporter:  iseulde       |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  4.7
Component:  REST API      |     Version:  trunk
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by joehoyle):

 My 2c:

 > Shouldn't you be able to POST the data you got back to the server
 without errors?

 Broadly speaking: yes. However, there are some edgecases when this isn't
 exactly possible., following to:

 > Isn't it now conditional if it's based on the theme?

 I think the distinction here is site wide conditional (say for the theme)
 or conditional based off a specific post. Right now, it's implement as:

 "Allow any of these values" (valid formats), however, if you have a non-
 valid format already on the resource, then you are actually saying "Allow
 any of these values, or the specific value that might already be stored
 for that specific post". Right now, most of the validation is not specific
 post aware.

 We only recently changed the validation to only support the values allowed
 by the current theme (as that's broadly what the admin does), however I
 thinking maybe that was a mistake and we should always support _all_ the
 post formats in the API. Even if we fixed the validation issue, it's
 somewhat annoying that you can get a post in the API which has an post
 format that you, as an api client, never knew the existence of.

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Ticket URL: <https://core.trac.wordpress.org/ticket/38916#comment:9>
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