[wp-trac] [WordPress Trac] #40886: REST API: PUT requests fail on Nginx servers when fancy permalinks aren't enabled

[WordPress Trac]

#40886: REST API: PUT requests fail on Nginx servers when fancy permalinks aren't
enabled
--------------------------+-----------------------------
 Reporter:  Joen          |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  REST API      |    Version:  4.7
 Severity:  normal        |   Keywords:
  Focuses:  rest-api      |
--------------------------+-----------------------------
 Steps to reproduce:

 1. have a web server running nginx, or use wp docker or vvv fresh installs
 2. have fancy permalinks disabled, use the stock `?p=123` ones
 3. install the Gutenberg editor from
 https://github.com/WordPress/gutenberg as an activated plugin. Be sure to
 `npm install`, `npm run build` etc.
 4. load the Gutenberg menu item in the sidebar
 5. Press Save draft button, then press Update, and you'll see an error
 message in the console: `PUT http://localhost/?rest_route=/wp/v2/posts/6
 405 (Not Allowed)`

 If you go to Settings > Permalinks, and choosing any fancy permalink
 option, saving works fine.

 From @pento:

 > So, it seems that `ngx_http_index_module`, the nginx module that
 redirects `/` to `/index.php` ignores all methods except `GET`, `HEAD`,
 and `POST`.
 > Editing the post sends a `PUT`, which is rejected.

 See also, trac discussion starting here:
 https://wordpress.slack.com/archives/C02RQC26G/p1496136902282711

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Ticket URL: <https://core.trac.wordpress.org/ticket/40886>
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