HapiJS assert request in handler - hapi.js

Question

I have multiple endpoints starting with /networks/{networkId}/*. I don't want to have logic to find a network and execute some extra validation on it, in every handler. Is there any way to solve this on a higher level? Ex. plugins/server method etc?
In every handler I have the following boilerplate code:
import networkRepo from 'common/repositories/network';
// handler.js
export default (req, reply) => {
return networkRepo.findById(req.params.networkId).then(network => {
// Logic to validate whether the logged user belongs to the network
// Logic where I need the network instance
});
}
The best situation would be:
// handler.js
export default (req, reply) => {
console.log(req.network); // This should be the network instance
}

Answer 1

Best way to achieve what you want is to either create a generic function that you can call first inside your handler or alternatively create an internal hapi route which will perform you look-up and return value to your other handler. Internal routes can then be accesses by server.inject from within your other handler, see options called allowInternals for more details, I can write pseudo-code to help!
[{
method: 'GET',
path: '/getNetworkByID/{id}',
config: {
isInternal: true,
handler: function (request, reply) {
return networkRepo.findById(req.params.networkId).then(network => {
// Logic to validate whether the logged user belongs to the network
// Logic where I need the network instance
reply(network.network);
});
}
}
},
{
method: 'GET',
path: '/api/networks/{id}',
config: {
isInternal: true,
handler: function (request, reply) {
request.server.inject({
method: 'GET',
url: '/getNetworkByID/' + request.params.id,
allowInternals: true
}, (res) => {
console.log(res.result.network) //network
});
}
}
}]