gitlab-org--gitlab-foss/app/controllers/projects/badges_controller.rb

class Projects::BadgesController < Projects::ApplicationController
  before_action :no_cache_headers, except: [:index]

  def index
  end

  def build
    badge = Gitlab::Badge::Build.new(project, params[:ref])

    respond_to do |format|
      format.html { render_404 }
      format.svg do
        send_data(badge.data, type: badge.type, disposition: 'inline')
      end
    end
  end
end