Hapi nested routing

Question

Suppose I want to have REST endpoints which look roughly like this:

/projects/
/projects/project_id 

/projects/project_id/items/
/projects/project_id/items/item         


        

Answer 1

There isn't great information about such a basic requirement. Currently, I am doing the following & it works well.

Step 1: Contain the routes in a plugin, as so:

// server.js
const server = Hapi.server({ ... })
await server.register(require('./routes/projects'), { routes: { prefix: '/projects' } })

Step 2: Register an ext within the scope of that plugin.

// routes/projects/index.js
module.exports = {

    name: 'projects',

    async register(server) {

        server.route({
            method: 'get',
            path: '/', // note: you don't need to prefix with `projects`
            async handler(request, h) {
                return [ ... ]
            }
        })

        server.route({
            method: 'get',
            path: '/{projectId}', // note: you don't need to prefix with `projects`
            async handler(request, h) {
                return { ... }
            }
        })

        server.ext({
            // https://hapijs.com/api#request-lifecycle
            type: 'onPostAuth',
            options: {
                // `sandbox: plugin` will scope this ext to this plugin
                sandbox: 'plugin'
            },
            async method (request, h) {
                // here you can do things as `pre` steps to all routes, for example:
                // verify that the project `id` exists
                if(request.params.projectId) {
                    const project = await getProjectById(request.params.projectId)
                    if(!project) {
                        throw Boom.notFound()
                    }
                    // Now request.params.project can be available to all sub routes
                    request.params.project = project
                }
                return h.continue
            }
        })

    }

}

This has been as close to I have been able to get to recreating Express Router functionality.