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react-form-validation-lib

v1.0.1

Published

Validação de formulários com React baseada em atributos HTML.

Downloads

4

Readme

React Form Validation Hook

Uma biblioteca leve, poderosa e extensível para validação de formulários em React com suporte a atributos HTML e validações customizadas.

✨ Destaques

  • Validação baseada em atributos (required, type="email", data-*)
  • Mensagens de erro globais, multilíngues e personalizáveis
  • Possibilidade de definir mensagens específicas por campo
  • Regras customizadas com addValidationRule
  • Suporte a campos de texto, email, checkbox, file, e mais
  • Pronto para usar com Tailwind CSS (ou qualquer outro estilo)

🚀 Instalação

npm install react-form-validator

🔧 Uso Básico

import React from "react";
import { useFormValidation } from "react-form-validator";

export default function MyForm() {
  const { formRef, errors, validate } = useFormValidation();

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault();
    if (validate()) {
      alert("Formulário válido!");
    }
  };

  return (
    <form ref={formRef} onSubmit={handleSubmit}>
      <input name="email" type="email" required placeholder="Email" />
      {errors.email && <p>{errors.email}</p>}

      <input name="name" data-validate="onlyLetters" required placeholder="Nome" />
      {errors.name && <p>{errors.name}</p>}

      <input name="password" type="password" required />
      <input name="confirm" data-equals-to="password" required placeholder="Confirme a senha" />
      {errors.confirm && <p>{errors.confirm}</p>}

      <input name="avatar" type="file" accept="image/*" />
      {errors.avatar && <p>{errors.avatar}</p>}

      <button type="submit">Enviar</button>
    </form>
  );
}

🌍 Idiomas

Você pode definir o idioma padrão e mensagens customizadas por campo:

useFormValidation({
  lang: "en",
  messages: {
    en: {
      email: {
        required: "Email is required!",
        email: "Enter a valid email!",
      },
    },
    pt: {
      name: {
        onlyLetters: "Somente letras, por favor.",
      },
    },
  },
});

🧩 Validações Disponíveis

| Atributo | Descrição | |-------------------------|------------------------------------| | required | Campo obrigatório | | type="email" | Validação de email | | type="file" + accept| Validação de tipo de arquivo | | data-validate="rule" | Regras customizadas como onlyLetters | | data-equals-to="name" | Campo deve ser igual a outro | | minlength | Tamanho mínimo (minLength no HTML) | | maxlength | Tamanho máximo (maxLength no HTML) | | pattern | Expressão regular (pattern no HTML) |

✍️ Adicionando Validações Customizadas

import { addValidationRule } from "react-form-validator";

addValidationRule("even", (value) => parseInt(value, 10) % 2 === 0, {
  pt: "O número deve ser par.",
  en: "The number must be even.",
});

🛠️ Mensagens Padrão Customizadas

Você pode sobrescrever mensagens padrão para todos os campos:

useFormValidation({
  lang: "pt",
  defaultMessages: {
    pt: {
      required: "Preenchimento obrigatório!",
    },
  },
});

📦 Pronto para produção