invoice.js

    methods: {

        /**
         * Fetch all invoices for the user
         */
        fetchInvoices() {

            this.$http({url: '/invoices/fetch', method: 'GET'}).then(function (response) {

                console.log('trigged');

                //Set the data to the view.
                this.$set('invoices', response.data);
            }, function (response) {
                //TODO: Show a good error message.
                console.log('response:');
                console.log(response);
            });

        },



        /**
         * Send invoice to client
         */
        sendInvoice() {

            this.activateFirstTab();

            Spark.post('/invoices/', this.createForm)
                .then(() => {
                    this.createForm.previewInvoice = false; // To let backend know.
                    this.previewInvoice = false; // To show the preview page.
                    this.createForm = new SparkForm(clientCreateForm());
                    this.fetchInvoices();
                });
        }
    }