g.gui.gmodeler: fix script export not working if model contains Model…

…Data-type item (#3209)

gui/wxpython/gmodeler/model.py

@@ -2731,7 +2731,7 @@ def _handler(request, response):"""
 
         self._writeHandler()
 
-        for item in self.model.GetItems():
+        for item in self.model.GetItems(ModelAction):
             if item.GetParameterizedParams()["flags"]:
                 self.fd.write(
                     r"""
@@ -2864,7 +2864,7 @@ def _write_input_output_object(
         )
 
     def _writeHandler(self):
-        for item in self.model.GetItems():
+        for item in self.model.GetItems(ModelAction):
             self._writeItem(item, variables=item.GetParameterizedParams())
 
         self.fd.write("\n{}return response\n".format(" " * self.indent))
@@ -3132,7 +3132,7 @@ def _writePython(self):
             )
         )
 
-        modelItems = self.model.GetItems()
+        modelItems = self.model.GetItems(ModelAction)
         for item in modelItems:
             for flag in item.GetParameterizedParams()["flags"]:
                 if flag["label"]:
@@ -3228,7 +3228,7 @@ def cleanup():
             self.fd.write("    pass\n")
 
         self.fd.write("\ndef main(options, flags):\n")
-        for item in self.model.GetItems():
+        for item in self.model.GetItems(ModelAction):
             self._writeItem(item, variables=item.GetParameterizedParams())
 
         self.fd.write("    return 0\n")