[wp-trac] [WordPress Trac] #59299: Add Felt.com to the list of oEmbed providers

[WordPress Trac]

#59299: Add Felt.com to the list of oEmbed providers
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 Reporter:  javiarce     |       Owner:  (none)
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  Embeds       |     Version:
 Severity:  normal       |  Resolution:
 Keywords:               |     Focuses:
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Comment (by swissspidy):

 > I am able to use Notion's oEmbed discovery to automatically embed a Felt
 map and all the links for fine. Is the link functionality being broken
 something we can fix on our end?

 WordPress oEmbed discovery support is very strict, and iframes are
 rigorously sandboxed by adding `sandbox="allow-scripts"
 security="restricted"` attributes. That's why the link is not working
 automatically.

 Links to the same origin as the iframe are supported via postMessage calls
 using a secret that's passed to the iframe via a query parameter. While
 that's technically possible for you to add, it also complicates things :-)

 Plus, I now see that there also some CORS issues because of the
 sandboxing.

 Long story short, I think adding it to the allowlist is the most
 straightforward way.

 That said, it feels like for now that's best done via a dedicated
 WordPress plugin that adds such support. Such a plugin could also provide
 a dedicated block for the block editor as well.
 Perhaps this is something you could look into?

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Ticket URL: <https://core.trac.wordpress.org/ticket/59299#comment:9>
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