Contents

require_dependency "panda_pal/application_controller"

module PandaPal
  class LtiController < ApplicationController

    def tool_config
      lti_options = PandaPal.lti_options
      lti_nav = PandaPal.lti_paths
      lti_environments = PandaPal.lti_environments
      lti_custom_params = PandaPal.lti_custom_params

      if lti_environments.empty?
        render text: 'Domains must be set in lti_environments'
        return
      end

      platform = lti_options.delete(:platform) || 'canvas.instructure.com'
      host = "#{request.scheme}://#{request.host_with_port}"
      tc = IMS::LTI::Services::ToolConfig.new(:title => lti_options[:title], :launch_url => ("#{host}#{lti_options[:launch_route]}") || 'ABC')
      tc.set_ext_param(platform, :domain, request.host)
      tc.set_ext_param(platform, :privacy_level, 'public')
      lti_custom_params.each do |k, v|
        tc.set_custom_param k, v
      end
      if lti_options.has_key?(:custom_fields)
        tc.set_ext_param(platform, :custom_fields, lti_options[:custom_fields])
        lti_options[:custom_fields].each do |k, v|
          tc.set_ext_param(platform, k, v)
        end
      end

      lti_nav.each do |k, v|
        tc.set_ext_param(platform, k.to_sym, ext_params(v))
      end

      tc.set_ext_param(platform, :environments, lti_environments)

      #strip the launch url
      xml = tc.to_xml
      xml = xml.sub(/<blti:launch_url>.*<\/blti:launch_url>/, '') if lti_options[:launch_route].blank?
      render xml: xml
    end

    def ext_params(options)
      url = options.delete(:url)
      options[:url] = main_app.send([url,'_url'].join)
      options
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
panda_pal-2.0.0	app/controllers/panda_pal/lti_controller.rb