Class: LtiProvider::LtiController

Inherits:
LtiApplicationController show all
Defined in:
app/controllers/lti_provider/lti_controller.rb

Instance Method Summary collapse

Instance Method Details

#configure ⇒ Object 



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# File 'app/controllers/lti_provider/lti_controller.rb', line 48

def configure
  respond_to do |format|
    format.xml do
      render xml: Launch.xml_config(lti_launch_url)
    end
  end
end

#consume_launch ⇒ Object 



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# File 'app/controllers/lti_provider/lti_controller.rb', line 31

def consume_launch
  launch = Launch.where("created_at > ?", 5.minutes.ago).find_by_nonce(params[:nonce])

  if launch
    [:account_id, :course_name, :course_id, :canvas_url, :tool_consumer_instance_guid,
     :user_id, :user_name, :user_roles, :user_avatar_url].each do |attribute|
      session[attribute] = launch.public_send(attribute)
    end

    launch.destroy

    redirect_to main_app.root_path
  else
    return show_error "The tool was not launched successfully. Please try again."
  end
end

#cookie_test ⇒ Object 



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# File 'app/controllers/lti_provider/lti_controller.rb', line 22

def cookie_test
  if session[:cookie_test]
    # success!!! we've got a session!
    consume_launch
  else
    render
  end
end

#launch ⇒ Object 



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# File 'app/controllers/lti_provider/lti_controller.rb', line 7

def launch
  provider = IMS::LTI::ToolProvider.new(params['oauth_consumer_key'], LtiProvider::Config.secret, params)
  launch = Launch.initialize_from_request(provider, request)

  if !launch.valid_provider?
    msg = "#{launch.lti_errormsg} Please be sure you are launching this tool from the link provided in Canvas."
    return show_error msg
  elsif launch.save
    session[:cookie_test] = true
    redirect_to cookie_test_path(nonce: launch.nonce)
  else
    return show_error "Unable to launch #{LtiProvider::XmlConfig.tool_title}. Please check your External Tools configuration and try again."
  end
end