ghost/core/client/app/components/modals/delete-post.js

import Ember from 'ember';
import ModalComponent from 'ghost/components/modals/base';

const {computed, inject} = Ember;
const {alias} = computed;

export default ModalComponent.extend({

    submitting: false,

    post: alias('model'),

    notifications: inject.service(),
    routing: inject.service('-routing'),

    _deletePost() {
        let post = this.get('post');

        // definitely want to clear the data store and post of any unsaved,
        // client-generated tags
        post.updateTags();

        return post.destroyRecord();
    },

    _success() {
        // clear any previous error messages
        this.get('notifications').closeAlerts('post.delete');

        // redirect to content screen
        this.get('routing').transitionTo('posts');
    },

    _failure() {
        this.get('notifications').showAlert('Your post could not be deleted. Please try again.', {type: 'error', key: 'post.delete.failed'});
    },

    actions: {
        confirm() {
            this.set('submitting', true);

            this._deletePost().then(() => {
                this._success();
            }, () => {
                this._failure();
            }).finally(() => {
                this.send('closeModal');
            });
        }
    }
});