Using glue with hapi-mongoose

[Calinou]

Context

• node version: 8.11.3
• glue version: 5.0.0
• hapi version: 17.5.2

What are you trying to achieve or the steps to reproduce?

I'm wondering how to make hapi-mongoose's database connection object available in plugins without copy-pasting too much code around. From what I've seen, it should also be available in require()'d route handlers (which I've had trouble doing).

I tried appending them to server.app in my main index.js file, but server.app was still empty in any plugins. I also tried defining methods that retrieved the hapi-mongoose objects and using server.bind(). I even tried creating a dedicated models plugin, adding it as a dependency and loading routes in the after callback, without success.

Here's the manifest I'm using:

const manifest = {
  server: {
    host: "localhost",
    port: 3000,
  },
  register: {
    plugins: [
      {
        plugin: "blipp",
        options: {
          showAuth: true,
        },
      },
      {
        plugin: "hapi-mongoose",
        options: {
          url: "mongodb://localhost:27017",
          promises: "native",
          mongooseOptions: {
            dbName: "myDatabase",
          },
        },
      },
      {
        plugin: "./notifications",
        routes: {
          prefix: "/api/notifications",
        },
      },
    ],
  },
};

For the record, the hapi-mongoose utility objects can be accessed like this:

// Database connection object
server.plugins["hapi-mongoose"].connection
// Used to define schemas and models
server.plugins["hapi-mongoose"].lib

[WesTyler]

I'm not sure what the question is here. You've already found where the connection object is available, at server.plugins["hapi-mongoose"].connection.

The register function of all of your plugins get passed the server parameter, and you can access the server object on request handlers in your plugins via request.server as well.

[Calinou]

@WesTyler Thanks for the reply :smiley:

I ended up placing models in separate files, therefore I had to find out a way to make the hapi-mongoose objects available in schema files; I passed the server object to the require() function which returns the schema. It's not ideal as it still requires copy-pasting two lines in each schema, but I can deal with that.

index.js

exports.register = server => {
  // Load models
  server.app.Notification = require("./models/notification")(server);

  // ...

---

models/notification.js

module.exports = server => {
  const db = server.plugins["hapi-mongoose"].connection;
  const Schema = server.plugins["hapi-mongoose"].lib.Schema;

  return db.model(
    "Notification",
    new Schema({
      // ...
    }),
  );
};

I think this is resolved for now, so I'll close this issue.

[WesTyler]

Ah, ok, I see now. Thanks for clarifying.

FWIW, that's a similar pattern we use when we need props or methods on the server object inside of plugin application logic.

Glad you found a working solution 👍

[dellamina]

@Calinou Nice solution, I took it one step further:

// index.js
exports.register = server => {
  const hapiMongoose = server.plugins["hapi-mongoose"];
  const mongo = {
    db: hapiMongoose.connection,
    mongoose: hapiMongoose.lib,
    Schema: hapiMongoose.lib.Schema
  }
  server.app.Notification = require("./models/notification")(mongo);

and then in your model you can take advantage of object destructuring like so:

// models/notification.js
module.exports = mongo => {
  const { db, mongoose, Schema } = mongo;

[lock[bot]]

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