fix: error when property can not be compare by '==' and '!=' && data can not be serialed

Author: ArnoChenFx

NodeGraphQt/base/commands.py

@@ -51,15 +51,30 @@ def set_node_prop(self, name, value):
             setattr(view, name, value)
 
     def undo(self):
-        if self.old_val != self.new_val:
+        do_undo = False
+        try:
+            if self.old_val != self.new_val:
+                do_undo = True
+        except:
+            do_undo = True
+
+        if do_undo:
             self.set_node_prop(self.name, self.old_val)
 
             # emit property changed signal.
             graph = self.node.graph
             graph.property_changed.emit(self.node, self.name, self.old_val)
 
     def redo(self):
-        if self.old_val != self.new_val:
+        do_redo = False
+
+        try:
+            if self.old_val != self.new_val:
+                do_redo = True
+        except:
+            do_redo = True
+
+        if do_redo:
             self.set_node_prop(self.name, self.new_val)
 
             # emit property changed signal.

NodeGraphQt/base/model.py

@@ -232,7 +232,20 @@ def to_dict(self):
             node_dict['outputs'] = outputs
 
         custom_props = node_dict.pop('_custom_prop', {})
+
         if custom_props:
+            # exclude the data which can not be serialed (like numpy array)
+            to_remove = []
+            types = [float, str, int, list, dict, bool, None, complex]
+            for k, v in custom_props.items():
+                if type(v) not in types:
+                    try:
+                        json.dumps(v)
+                    except:
+                        to_remove.append(k)
+            for k in to_remove:
+                custom_props.pop(k)
+
             node_dict['custom'] = custom_props
 
         exclude = ['_graph_model',

NodeGraphQt/base/node.py

@@ -293,8 +293,11 @@ def set_property(self, name, value):
         """
 
         # prevent signals from causing a infinite loop.
-        if self.get_property(name) == value:
-            return
+        try:
+            if self.get_property(name) == value:
+                return
+        except:
+            pass
 
         if self.graph and name == 'name':
             value = self.graph.get_unique_name(value)