How to implement Joi validation in hapi.js?

Question

I just want to implement Joi in Hapi API.

server.route([
    {
        method: 'POST',
        path: '/login',
        config: {
            tags: ['login', 'auth'],
            auth: false,
            validate: {
                payload: payloadValidator,
                failAction: (req, h, source, error) => {                                                
                    console.log("Error ::: ", source.details[0].message);
                    return h.response({ code: 0, message: source.details[0].message });                        
                }
            }
        },
        handler: async (request, h) => {
            console.log(request.payload.email);
            console.log(request.payload.password);
            ...                                
        }
    }
]);

Hear I call payloadValidator .

const payloadValidator = Joi.object({
    email: Joi.string().required(),
    password: Joi.string().required()
}).options({ allowUnknown: true }); 

Actually I'm new with hapi and I'm missing something in my code. Can anyone help me to fix this issue?

Required output

If I do not pass email then the app must throw an error of Email is required and it should be the same with the password field also.

Error:

Error ::: "email" is required Debug: internal, implementation, error Error: Lifecycle methods called before the handler can only return an error, a takeover response, or a continue signal at Request._lifecycle (/var/www/html/hapi/node_modules/@hapi/hapi/lib/request.js:326:33) at process._tickCallback (internal/process/next_tick.js:68:7)

Answer 1

As an error suggests Lifecycle methods called before the handler can only return an error, a takeover response, or a continue signal you have to return takeover response.

return h.response({ code: 0, message: source.details[0].message }).takeover();

For more information you can visit this link : reference link