Ghost/ghost/admin/app/models/invite.js

import Model, {attr, belongsTo} from '@ember-data/model';
import {inject as service} from '@ember/service';

export default Model.extend({
    token: attr('string'),
    email: attr('string'),
    expires: attr('number'),
    createdAtUTC: attr('moment-utc'),
    createdBy: attr('number'),
    updatedAtUTC: attr('moment-utc'),
    updatedBy: attr('number'),
    status: attr('string'),

    role: belongsTo('role', {async: false}),

    ajax: service(),
    ghostPaths: service(),

    resend() {
        let inviteData = {
            email: this.email,
            role_id: this.role.id
        };

        let inviteUrl = this.get('ghostPaths.url').api('invites');

        return this.ajax.del(`${inviteUrl}${this.id}`)
            .then(() => {
                return this.ajax.post(inviteUrl, {
                    data: JSON.stringify({invites: [inviteData]}),
                    contentType: 'application/json'
                });
            });
    }
});