gitlab-org--gitlab-foss/app/controllers/groups/application_controller.rb

class Groups::ApplicationController < ApplicationController
  layout 'group'

  skip_before_action :authenticate_user!
  before_action :group

  private

  def group
    unless @group
      id = params[:group_id] || params[:id]
      @group = Group.find_by(path: id)

      unless @group && can?(current_user, :read_group, @group)
        @group = nil

        if current_user.nil?
          authenticate_user!
        else
          render_404
        end
      end
    end

    @group
  end

  def group_projects
    @projects ||= GroupProjectsFinder.new(group).execute(current_user)
  end

  def authorize_admin_group!
    unless can?(current_user, :admin_group, group)
      return render_404
    end
  end

  def authorize_admin_group_member!
    unless can?(current_user, :admin_group_member, group)
      return render_403
    end
  end
end