change err and traduction

loopback/locale/es.json

@@ -305,5 +305,6 @@
 	"The renew period has not been exceeded": "El periodo de renovación no ha sido superado",
 	"Valid priorities": "Prioridades válidas: %d",
 	"Negative basis of tickets": "Base negativa para los tickets: {{ticketsIds}}",
-	"You cannot assign/remove an alias that you are not assigned to": "No puede asignar/eliminar un alias que no tenga asignado"
+	"You cannot assign/remove an alias that you are not assigned to": "No puede asignar/eliminar un alias que no tenga asignado",
+	"This invoice has a linked vehicle.": "Esta factura tiene un vehiculo vinculado"
 }

modules/invoiceIn/back/models/invoice-in.js

@@ -1,3 +1,5 @@
+const UserError = require('vn-loopback/util/user-error');
+
 module.exports = Self => {
     require('../methods/invoice-in/filter')(Self);
     require('../methods/invoice-in/summary')(Self);
@@ -7,4 +9,10 @@ module.exports = Self => {
     require('../methods/invoice-in/invoiceInPdf')(Self);
     require('../methods/invoice-in/invoiceInEmail')(Self);
     require('../methods/invoice-in/getSerial')(Self);
+    Self.rewriteDbError(function(err) {
+        console.log(err);
+        if (err.code === 'ER_ROW_IS_REFERENCED_2')
+            return new UserError(`This invoice has a linked vehicle.`);
+        return err;
+    });
 };

modules/invoiceIn/back/models/invoiceInVehicle.js

@@ -2,6 +2,7 @@ let UserError = require('vn-loopback/util/user-error');
 
 module.exports = Self => {
     Self.rewriteDbError(function(err) {
+        console.log(err);
         if (err.code === 'ER_ROW_IS_REFERENCED_2')
             return new UserError(`This invoice has a linked vehicle.`);
         return err;