From bfab5cd9edf01f5b4ec4b9cfdb1397cdd3c072f8 Mon Sep 17 00:00:00 2001
From: Hashem Qolami <hashem@cafebazaar.ir>
Date: Sat, 26 Nov 2016 16:28:43 +0330
Subject: [PATCH] Form: :wrench: fixed validation issue with dynamic rules
 (fixed #1317)

---
 packages/form/src/form.vue | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/form/src/form.vue b/packages/form/src/form.vue
index 7fecd646..b00634e4 100644
--- a/packages/form/src/form.vue
+++ b/packages/form/src/form.vue
@@ -23,6 +23,11 @@
       },
       inline: Boolean
     },
+    watch: {
+      rules() {
+        this.validate();
+      }
+    },
     data() {
       return {
         fields: []
@@ -54,7 +59,7 @@
             if (errors) {
               valid = false;
             }
-            if (index === this.fields.length - 1) {
+            if (typeof callback === 'function' && index === this.fields.length - 1) {
               callback(valid);
             }
           });