You are right, as usual. Thank you Il giorno martedì 18 aprile 2017 20:55:00 UTC+2, Anthony ha scritto: > > >> db.materia.nome.requires=IS_NOT_IN_DB(db(db.materia.docente==request.vars.docente),db.materia.nome) >> > > There is no request.vars.docente. Based on your controller code, it > appears you are passing the "docente" value via request.args(0), so the > above should probably be db.materia.docente==request.args(0). > > Anthony >
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