TN gun ruling: whose Constitutional right is at stake?

Reuters is reporting . . . Tennessee judge blocks law allowing guns in bars | U.S. | Reuters

Nashville Judge Claudia Bonnyman said the law was 'fraught with ambiguity' and ruled in favor of a suit brought by restaurant owners who argued gun owners would not be able to determine if an establishment met the criteria.

Legal gadfly Gordon Bonnyman's wife may be a bit of a gadfly herself; except she's a judge. Under what theory of "standing" does a restaurant owner sue against a law on behalf of patrons who might (or might not) be unsure about whether they're breaking the law? Regrettably, it appears that Judge Bonnyman, like her husband, is inclined to use the courts to legislate her policy preferences.