From 3efda08771ad44e90e1fa7fae483f4ebfc88eaf9 Mon Sep 17 00:00:00 2001
From: relax <liusong.liu@eascs.com>
Date: Fri, 1 Jun 2018 17:21:33 +0800
Subject: [PATCH] fix: action is Array or Dictionary can't be transformed

---
 .../Setter/Expression/VVPropertyExpressionSetter.m    | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/VirtualView/Creater/Setter/Expression/VVPropertyExpressionSetter.m b/VirtualView/Creater/Setter/Expression/VVPropertyExpressionSetter.m
index 02935d1..a80bca1 100644
--- a/VirtualView/Creater/Setter/Expression/VVPropertyExpressionSetter.m
+++ b/VirtualView/Creater/Setter/Expression/VVPropertyExpressionSetter.m
@@ -130,6 +130,17 @@ - (void)applyToNode:(VVBaseNode *)node withObject:(nullable NSDictionary *)objec
     if (self.expression) {
         id objectValue = [self.expression resultWithObject:object];
         NSString *stringValue = [objectValue description];
+        
+        if ([objectValue isKindOfClass:[NSArray class]] || [objectValue isKindOfClass:[NSDictionary class]]) {
+            NSError *error = nil;
+            NSData *jsonData = [NSJSONSerialization dataWithJSONObject:objectValue options:NSJSONWritingPrettyPrinted error:&error];
+            NSString *jsonStr = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
+            
+            if (!error && jsonStr) {
+                stringValue = jsonStr;
+            }
+        }
+        
         BOOL handled = NO;
         switch (self.valueType) {
             case TYPE_INT: