connect-validation is a simple middleware for express.js and connect.js that helps handling 400 BAD REQUEST on JSON APIs.
You have to use the middleware.
var express = require('express');
var validationMiddleware = require('connect-validation');
var app = express();
var app.use(validationMiddleware);This will add the addError and sendError method to the Response object.
You can add as many errors as you want. At the end of the validation, use sendError() to build the 400 errors response.
app.get('/', function (req, res) {
if (!req.query.hasOwnProperty('id')) {
res.addError("querystring", "id", "missing; id");
res.sendError();
return;
}
});If you have only one error, you can use sendError directly.
app.get('/', function (req, res) {
if (!req.query.hasOwnProperty('id')) {
res.sendError("querystring", "id", "missing; id");
return;
}
});
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