Merge pull request #287 from compas-dev/fix_to_collision_meshes

fix use of getattr

Author: beverlylytle

CHANGELOG.rst

@@ -22,6 +22,7 @@ Unreleased
 
 * Fix ``repr()`` of ``ROSmsg`` class
 * Fix data type of secs and nsecs in ``Time`` ROS message
+* Fix ``CollisionObject.to_collision_meshes``
 
 **Deprecated**
 

src/compas_fab/backends/ros/messages/moveit_msgs.py

@@ -103,7 +103,7 @@ def to_collision_meshes(self):
                 vertex.x = float(vertex.x)
                 vertex.y = float(vertex.y)
                 vertex.z = float(vertex.z)
-            root_name = getattr(self.header, 'frame_id', self.header['frame_id'])
+            root_name = getattr(self.header, 'frame_id', None) or self.header['frame_id']
             cm = CollisionMesh(mesh.mesh, self.id, pose.frame, root_name)
             collision_meshes.append(cm)
         return collision_meshes