+ def issue_comment_params
+ params.require(:issue_comment).permit(:body)
+ end
+
+ def sort_column
+ Issue.column_names.include?(params[:sort]) ? params[:sort] : "status"
+ end
+
+ def sort_direction
+ %w(asc desc).include?(params[:direction]) ? params[:direction] : "asc"
+ end
+
+ # back-port of ActionController#redirect_back from rails 5
+ def redirect_back(fallback_location, **args)
+ if referer = request.headers["Referer"]
+ redirect_to referer, **args
+ else
+ redirect_to fallback_location, **args