Support for interactive menus in message attachments (#9285)

app/post.go

@@ -852,7 +852,7 @@ func makeOpenGraphURLsAbsolute(og *opengraph.OpenGraph, requestURL string) {
 	}
 }
 
-func (a *App) DoPostAction(postId string, actionId string, userId string) *model.AppError {
+func (a *App) DoPostAction(postId, actionId, userId, selectedOption string) *model.AppError {
 	pchan := a.Srv.Store.Post().GetSingle(postId)
 
 	var post *model.Post
@@ -870,9 +870,15 @@ func (a *App) DoPostAction(postId string, actionId string, userId string) *model
 	request := &model.PostActionIntegrationRequest{
 		UserId:  userId,
 		PostId:  postId,
+		Type:    action.Type,
 		Context: action.Integration.Context,
 	}
 
+	if action.Type == model.POST_ACTION_TYPE_SELECT {
+		request.DataSource = action.DataSource
+		request.Context["selected_option"] = selectedOption
+	}
+
 	req, _ := http.NewRequest("POST", action.Integration.URL, strings.NewReader(request.ToJson()))
 	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("Accept", "application/json")