# File app/controllers/proposals_controller.rb, line 227
  def ck_document
    # Ensure the requested document belongs to this proposal
    unless @document = @proposal.documents.find_by_id(params[:document_id])
      flash[:error] << _('Invalid document requested for this proposal')
      redirect_to :action => 'show', :id => @proposal
      return false
    end
  end