Accessing mounted LB3 Models and their datasources in LB4

[kvnwong0210]

I'm currently running a middleware that in lb3 would be passed the app as a whole and could access the models with the method app.models.MODEL and then run the built-in create method to create a new document in the DB datasource set. I've attempted to recreate this with a lb4 server with the old lb3 mounted but the app that I'm passing in doesn't have access to the .models method.

Below is a code snipped of how I am passing in the app in the old lb3 app and how it is being used.

var app = (module.exports = loopback());
var model = app.models.User
model.create({"username: "John"})

And here is how I am trying it in the lb4 server.ts file

export class ExpressServer {
  public readonly app: express.Application;
  public readonly lbApp: lb3Application;
  private server?: http.Server;
  public url: String;

  constructor(options: ApplicationConfig = {}) {
    this.app = express();
    this.lbApp = new lb3Application(options);

   var model = this.lbApp.models.User
   model.create({"username: "John"})
}

However the lbApp doesn't have the .models method. Any idea how I can access the mounted models in Lb4?

[nflaig]

you can import the lb3 app, like this const lb3app = require("../../lb3app/core/app");, depends on your project structure

and then you can just do lb3app.models.User

[kvnwong0210]

Thank you. The app as per the old loopback3 directory structure was in var lb3app = require("../../../lb3app/server/server.js")
and from there I could run lb3app.models.User.create({})