Loopback: Dependency injection

[h2non]

I'm pretty sure you already thought about this for a while, however I guess it worth to mention it again since it will be particularly useful in the context of a framework. Also for testing simplifies the things.

I found it very handy especially for models and remote methods, where they might look like this:

  User.followers = function (userId, $req, $app, $UserFollowsModel, next) {
    var data = { where: { toUser: userId } }
    UserFollowsModel.find(data, next)
  }

  User.remoteMethod('followers', {
    returns: { root: true },
    accepts: { arg: 'id', type: 'string', required: true },
    http: {
      path: '/:id/followers',
      verb: 'GET',
      status: 200,
      errorStatus: 400
    }
  })

There're a bunch of packages that can suit properly, or may be writing your own DI container is also simple.
I'd vote take some inspiration from Angular DI, they've done well.

[raymondfeng]

Yeah, it's always on our radar. There are quite a few interesting use cases (including the one you illustrate) that requires some sort of DI. We'll evaluate it as part the next major release.

[BjornGameDev]

+1

[yellowred]

+1, any updates so far?

[simoami]

+1

[stale[bot]]

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