使用Node.js Microsoft Bot Framework显示图像

Question

So I have a first run dialog that asks the user to upload a photo. I do this via:

builder.Prompts.attachment(session, "Thanks. Now upload a picture").

and then in the next part of the waterfall, saving the uploaded media to session.userData like so:

function(session, results) {
    //some other code
    builder.Prompts.attachment(session, "Thanks. Now upload a picture.");
},
function(session, results) {
    session.userData.profilePhoto = results.response;
    session.endDialog("All done.")
}

So, say I know want to display that photo. How would I do it?

I've tried sending a HeroCard with a CardImage :

var message = new builder.Message(session);

var att = new builder.HeroCard(session)
        .images([
            builder.CardImage.create(session, session.userData.profilePhoto)
        ])
        .buttons([
            builder.CardAction.openUrl(session, "http://google.com", "buttonText")
        ]);

message.addAttachment(att);
session.send(message)

but that didn't work (I also tried to do session.userData.profilePhoto.contentUrl for the CardImage but that didnt work as well).

How exactly am I suppose to display images?

Answer 1

UserData is not intended to store large objects, only state. Data bags are limited to 64k. You'll want to use your own storage mechanism for images.