birth-date-str.js

import computed from 'ember-computed';

export function birthDateStrFor(key) {
  return computed(key, function() {
    let user    = this.get(key);
    let format  = this.get('locale.dateFormat');
    let name    = user.get('name');
    let dob     = user.get('dob').format(format);
    return `${name}'s birthday is on ${dob}`;
  });
}