* Alguien que me ayude, por favor, trato de evitar la solicitud si el nombre existe con NodeJS express *
aquí está mi código
/* Post new person to persons */ app.post("/api/persons/", (req, res) => { const schema = { name: Joi.string().alphanum().min(3).max(30).required(), number: Joi.string().min(9).max(30).required(), }; const { error } = validateFunction(req.body); const { body } = req; const reqValue = persons.some( (person) => person.name.toLowerCase() === body.name.toLowerCase() ); if (error) return res.status(400).send(error.details[0].message); else if (reqValue) return res.status(409).send(`${body.name} is already exist`); else { const person = { id: persons.length + 1, name: req.body.name, number: req.body.number, };Resolví el problema:
/* Post new person to persons */ app.post("/api/persons/", (req, res) => { const schema = { name: Joi.string().exist().alphanum().min(3).max(30).required(), number: Joi.string().min(9).max(30).required(), }; const { body } = req; const { error } = validateFunction(body, schema); const result = persons.filter(({ name }) => name === body.name); console.log("resulit", result); console.log("The name of request", body.name); if (error) return res.status(400).send(error.details[0].message); else if (result && result.length > 0) return res.status(409).send(`${body.name} is already exist`); else { const person = { id: persons.length + 1, name: req.body.name, number: req.body.number, }; persons.concat(person); res.send(person); } });