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Discussion on: A Clean Approach to Using Express Validator

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gallib_net profile image
Alain •

Very useful thanks!

For my purpose I just split validators.js in 2 parts, your validate const is for me a separate middleware in which I've also added a

req.matchedData = matchedData(req)
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useful to me to access to validated data in next middleware.

My validateRules middleware looks like:

import { matchedData, validationResult } from 'express-validator';

const validateRules = (req, res, next) => {
    const errors = validationResult(req);

    if (errors.isEmpty()) {
        req.matchedData = matchedData(req);
        return next();
    }

    const extractedErrors = [];
    errors.array().map(err => extractedErrors.push({ [err.param]: err.msg }));

    return res.status(422).json({
        errors: extractedErrors,
    });
}

export default validateRules;
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nedsoft profile image
Chinedu Orie •

That was insightful. Thanks for sharing!

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arnabmunshi profile image
ARNAB MUNSHI •

hi Alain

import { matchedData, validationResult } from 'express-validator';

This line not working for me. I don't know why.

But the following code is work for me.

import expressValidator from "express-validator";
const { body, validationResult } = expressValidator;