I have a three field form made of a name field, email field and a textarea. I'm using Joi 4.7.0 version along with hapijs. I use the object below validate the input. I receive the data object from an ajax call. When I fill all the three fields with wrong informations I get only the message relative to the first wrong field. Like that:
"{"statusCode":400,"error":"Bad Request","message":"name is not allowed to be empty","validation": {"source":"payload","keys":["data.name"]}}"
validate: {
payload: {
data: {
name: Joi.string().min(3).max(20).required(),
email: Joi.string().email().required(),
message: Joi.string().min(3).max(1000).required()
}
}
}
For explanation let suppose to not fill the three field. I get only one message error and not the message error of the others fields. Why?
It happens because Joi aborts early by default.
abortEarly
- whentrue
, stops validation on the first error, otherwise returns all the errors found. Defaults totrue
.
*EDIT: Configuration has changed in hapi 8.0. You need to add abortEarly: false
to the routes
config:
var server = new Hapi.Server();
server.connection({
host: 'localhost',
port: 8000,
routes: {
validate: {
options: {
abortEarly: false
}
}
}
});
*See the Joi API documentation for more details.
*Also, see validation
under Hapi Route options.
So Joi stops the validation on the first error:
var Hapi = require('hapi');
var Joi = require('joi');
var server = new Hapi.Server('localhost', 8000);
server.route({
method: 'GET',
path: '/{first}/{second}',
config: {
validate: {
params: {
first: Joi.string().max(5),
second: Joi.string().max(5)
}
}
},
handler: function (request, reply) {
reply('example');
}
});
server.start();
server.inject('/invalid/invalid', function (res) {
console.log(res.result);
});
Outputs:
{ statusCode: 400,
error: 'Bad Request',
message: 'first length must be less than or equal to 5 characters long',
validation: { source: 'params', keys: [ 'first' ] } }
You can however configure Hapi to return all errors. For this, you need to set abortEarly
to false
. You can do this in server configuration:
var server = new Hapi.Server('localhost', 8000, { validation: { abortEarly: false } });
If you run the script now, you get:
{ statusCode: 400,
error: 'Bad Request',
message: 'first length must be less than or equal to 5 characters long. second length must be less than or equal to 5 characters long',
validation: { source: 'params', keys: [ 'first', 'second' ] } }