i first thought that it might be a problem with iframe to shown pages which don’t use port 80 or 443 but since another test shows that my plone-environment at port 81 (http://archy.no-ip.org/iframe-test-different-port/) is shown correctly that cannot be it.
Discourse (actually Rails) sends a X-Frame-Options header that tells browsers that the site does not wish to be embedded in an iframe, hence all modern browsers will simply render a white square. You can see this in e.g. Chrome’s dev console which says
Refused to display 'http://archy.no-ip.org:82/' in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'.
The only way to “fix” this is to hack Discourse yourself: move the EmbedController's before_filter and ensure_embeddable method into the main ApplicationController and set the embeddable host site setting. But, while it can be done, you’ll be on extremely unsupported terrain…
I’m able to load Discourse in an iframe … on Firefox. But not Chrome (or Safari). In Chrome I have the following problem: Nothing is clickable! If I open the inspector and drill into the source it will highlight various elements (e.g. rows), but neither right clicks nor left clicks on any content of iframe have an effect. Any suggestions?
A solution to run Discourse in an iframe is to create a plugin that contains the following code in plugin.rb:
# Changes X-Frame-Options so the site can be embedded in an iframe. See:
# https://github.com/BeXcellent/discourse-allowiframe/blob/master/plugin.rb
# https://github.com/TheBunyip/discourse-allow-same-origin/blob/master/plugin.rb
Rails.application.config.action_dispatch.default_headers.merge!({'X-Frame-Options' => 'ALLOWALL'})
@Julian_Somoza, the Discourse team promotes an opinionated way of using Discourse and will not support alternatives. Additionally, they always reminds people of that fact.
That being said, I’m not from the Discourse team, so I can discuss your issue I use Discourse in an iframe for my project and never got the “You were logged out” modal.
I use Discourse in an iframe for my project and never got the “You were logged out” modal.