Ember Data is always fetching records for route - ember.js

Question

I just switched my application over to Ember CLI and Ember-Data (previously using Ember Model). When I transition to my employees route ember data does a GET request on the api's user route with a query as intended. However, whenever I leave this route and return it continues to perform a GET request on the api. Shouldn't these results be cached? I had a filter running on the model, but I removed it and still ran into the same issue.
Route w/ Filter:
import Ember from 'ember';
export default Ember.Route.extend({
model: function() {
// This queries the server every time I visit the route
return this.store.filter('user', {type: 'employee'}, function(user) {
if(! Ember.isEmpty(user.get('roles'))) {
return user.get('roles').contains('employee');
}
});
}
});
Route w/out Filter:
import Ember from 'ember';
// This still queries the server every time I visit the route
export default Ember.Route.extend({
model: function() {
return this.store.find('user');
}
});

Answer 1

Passing a second parameter into the filter function, {type: 'employee'}, turns it into a findQuery + filter, and find will always execute a query request. If you want to only call a particular resource once per SPA lifetime in a particular route you can add logic to keep track of it. The basic concept goes like this:
Check if you've fetched before
If you haven't fetch the records
Save the fetched records
return the saved fetched records
Example
export default Ember.Route.extend({
model: function() {
//resultPromise will return undefined the first time... cause it isn't defined
var resultPromise = this.get('resultPromise') || this.store.find('user');
this.set('resultPromise', resultPromise);
return resultPromise;
}
});
Additionally if you've already called find you can also just use store.all('type') to get all of the records for that type in the store client side without making a call to the server.