How to specify ext_content in LTI request?

[urashidmir]

Hi

It is not clear from the documentation how to specify ext_content value. I want to return an iframe in response to an LTI request but not sure how to access LTI provider ext_content to send iframe.

Thanks.

[Tazaf]

From what I understood from the LTI spec and my own tests, it's not the TP job to send back the app in the form of an iframe or a new windows or whatever ; it's the job of the TC to correctly display the received app.
For example, in Moodle, when you configure a new LTI activity, you have the ability to tell in which form the TP app will be displayed.
The ext_content value is only here for informational purposes and only set by the TC when sending its LTI request.