Ember - create default record if model is empty - ember.js

Question

I have a simple User model, with two fields: name and user_id
When the app starts, I want to check if my User model contains at least one record - if not, I want to create a default "admin" user automatically.
I have the following code in my application route:
model() {
let user = this.store.findAll('user'); // find all users
let record = user.then(function(result) {
let first = result.get('firstObject'); // check if we at least one user
if (first) { // if true, then we have at least one user
let user_id = first.get('user_id'); // get the first user's id
// do some more stuff here
}
else {
console.log("no record found"); // no user found, let's create our default user
let user = this.store.createRecord("user", { // <-- THIS DOESNT WORK - where can I create my record?
user_id: 1,
name: 'admin'
});
}
});
}
This code works, except that I can't call this.store inside my promise function, since this now belongs to the function.
Would it be better to create an action, and then call that action in my else statement? But then, how would I trigger that action from the model itself?
Any ideas would be helpful at this point. It feels like I'm misunderstanding some fundamental law of Ember (again).
SOLUTION:
Annnnd it was missing an arrow.. this seems to preserve the this context, through some dark ECMAscript magic
let uniqueid = records.then(function(result) { // this returns an error (TypeError: this is undefined)
let uniqueid = this.store.createRecord("uniqueid", {
user_id: 1,
name: 'admin'
});
}
let uniqueid = records.then((result) => { // this works!
let uniqueid = this.store.createRecord("uniqueid", {
user_id: 1,
name: 'admin'
});
}
Thanks #sheriffderek !

Answer 1

I think that this mystery is a JavaScript mystery more than an Ember one.
jsFiddle just broke... and I'm giving up on my example BUT... I think that if you just use es2015 arrow functions, they won't rebind the 'this'
something
.then( (response)=> {
// ?
})
;
OR you can do a pre 2015 style var context = this; somewhere in the outer scope and then use that in the inner scope. Give it a try! : )