VILLASweb/app/controllers/project/delete.js

import Ember from 'ember';

export default Ember.Controller.extend({
  sessionUser: Ember.inject.service('session-user'),

  actions: {
    cancelDelete() {
      // go back to project view
      let projectId = this.get('model.id');
      this.transitionToRoute('/project/' + projectId);
    },

    confirmDelete() {
      // get current user object
      var userId = this.get('sessionUser.user.id');
      var user = this.store.peekRecord('user', userId);

      // get the project
      var project = this.get('model');
      let projectId = project.get('id');

      // delete the project and remove from user projects
      user.get('projects').removeObject(projectId);
      user.save();

      project.destroyRecord();

      // go back to project list
      this.transitionToRoute('/projects');
    }
  }
});