Allow platform admins and internal users to switch their current study group

app/controllers/sessions_controller.rb

@@ -13,6 +13,8 @@ class SessionsController < ApplicationController
 
   def create
     if login(params[:email], params[:password], params[:remember_me])
+      # We set the user's default study group to the "internal" group (no external id) for the given consumer.
+      session[:study_group_id] = current_user.study_groups.find_by(external_id: nil)&.id
       redirect_back_or_to(:root, notice: t('.success'))
     else
       flash.now[:danger] = t('.failure')

app/controllers/study_groups_controller.rb

@@ -3,7 +3,7 @@
 class StudyGroupsController < ApplicationController
   include CommonBehavior
 
-  before_action :set_group, only: MEMBER_ACTIONS
+  before_action :set_group, only: MEMBER_ACTIONS + %w[set_as_current]
 
   def index
     @search = policy_scope(StudyGroup).ransack(params[:q])
@@ -37,6 +37,12 @@ class StudyGroupsController < ApplicationController
   end
   private :study_group_params
 
+  def set_as_current
+    session[:study_group_id] = @study_group.id
+    current_user.store_current_study_group_id(@study_group.id)
+    redirect_back(fallback_location: root_path, notice: t('study_groups.set_as_current.success'))
+  end
+
   def set_group
     @study_group = StudyGroup.find(params[:id])
     authorize!