Fix - Al importar escpos

CHANGELOG.md

@@ -1,3 +1,7 @@
+v 1.4.0 [01-ene-2017]
+---------------------
+    - Impresión de tickets
+
 v 1.3.0 [27-Dic-2017]
 ---------------------
     - Punto de venta

source/app/controllers/helper.py

@@ -14,7 +14,10 @@ from email import encoders
 from email.utils import formatdate
 
 import requests
-from escpos import printer
+try:
+    from escpos import printer
+except ImportError:
+    printer = None
 
 from reportlab.platypus import BaseDocTemplate, Frame, PageTemplate, Image
 from reportlab.lib import colors

source/static/js/controller/tickets.js

@@ -7,7 +7,8 @@ var tickets_controllers = {
     init: function(){
         $$('cmd_nuevo_ticket').attachEvent('onItemClick', cmd_nuevo_ticket_click)
         $$('cmd_ticket_to_invoice').attachEvent('onItemClick', cmd_ticket_to_invoice_click)
-        $$('cmd_ticket_report').attachEvent('onItemClick', cmd_ticket_report_click)
+        $$('cmd_ticket_report_pdf').attachEvent('onItemClick', cmd_ticket_report_pdf_click)
+        $$('cmd_ticket_report_xls').attachEvent('onItemClick', cmd_ticket_report_xls_click)
         $$('cmd_generar_ticket').attachEvent('onItemClick', cmd_generar_ticket_click)
         $$('cmd_cerrar_ticket').attachEvent('onItemClick', cmd_cerrar_ticket_click)
         $$('cmd_new_invoice_from_ticket').attachEvent('onItemClick', cmd_new_invoice_from_ticket_click)
@@ -704,7 +705,7 @@ function grid_tickets_click(id, e, node){
 }
 
 
-function cmd_ticket_report_click(){
+function cmd_ticket_report_pdf_click(){
     webix.toPDF($$('grid_tickets'), {
         ignore: {'pdf': true, 'print': true},
         filename: 'Reporte_Tickets',
@@ -717,4 +718,9 @@ function cmd_ticket_report_click(){
             total: {css: 'right'},
         }
     })
+}
+
+
+function cmd_ticket_report_xls_click(){
+
 }

source/static/js/ui/tickets.js

@@ -6,7 +6,9 @@ var toolbar_tickets = [
     {view: 'button', id: 'cmd_ticket_to_invoice', label: 'Facturar',
         type: 'iconButton', autowidth: true, icon: 'file-code-o'},
     {},
-    {view: 'button', id: 'cmd_ticket_report', label: 'Reporte',
+    {view: 'button', id: 'cmd_ticket_report_pdf', label: 'Reporte [PDF]',
+        type: 'iconButton', autowidth: true, icon: 'bars'},
+    {view: 'button', id: 'cmd_ticket_report_xls', label: 'Reporte [XLS]',
         type: 'iconButton', autowidth: true, icon: 'bars'},
     {},
     {view: 'button', id: 'cmd_cancelar_ticket', label: 'Cancelar',