Fix bug in serialisation of AttributeView

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Fixed bug in `Box.scaled` causing a `TypeError` due to incorrect parameter forwarding.
 * Changed argument names of `Box.scale()` to `x`, `y`, `z`, instead of `factor` and made `y` and `z` optional to keep positional arguments backwards compatible.
 * Fixed import errors in `compas_rhino.conduits` for Rhino 8.
+* Fixed bug in serialisation when `compas.datastructures.attributes.AttributeView` is used.
 
 ### Removed
 

src/compas/data/encoders.py

@@ -115,6 +115,7 @@
             The serialized object.
 
         """
+        from compas.datastructures.attributes import AttributeView
 
         if hasattr(o, "__jsondump__"):
             return o.__jsondump__(minimal=DataEncoder.minimal)
@@ -153,6 +154,9 @@
             if isinstance(o, (System.Decimal, System.Double, System.Single)):
                 return float(o)
 
+        if isinstance(o, AttributeView):
+            return dict(o)
+
         return super(DataEncoder, self).default(o)
 
 

tests/compas/data/test_json.py

@@ -20,23 +20,23 @@ def test_json_native():
 
 def test_json_primitive():
     before = Point(0, 0, 0)
-    after = compas.json_loads(compas.json_dumps(before))
+    after = compas.json_loads(compas.json_dumps(before))  # type: Point
     assert before.__dtype__ == after.__dtype__
     assert all(a == b for a, b in zip(before, after))
     assert before.guid == after.guid
 
 
 def test_json_shape():
     before = Box(frame=Frame(Point(0, 0, 0), Vector(1, 0, 0), Vector(0, 1, 0)), xsize=1, ysize=1, zsize=1)
-    after = compas.json_loads(compas.json_dumps(before))
+    after = compas.json_loads(compas.json_dumps(before))  # type: Box
     assert before.__dtype__ == after.__dtype__
     assert all(a == b for a, b in zip(before.to_vertices_and_faces()[0], after.to_vertices_and_faces()[0]))
     assert before.guid == after.guid
 
 
 def test_json_xform():
     before = Transformation.from_frame_to_frame(Frame.worldXY(), Frame.worldXY())
-    after = compas.json_loads(compas.json_dumps(before))
+    after = compas.json_loads(compas.json_dumps(before))  # type: Transformation
     assert before.__dtype__ == after.__dtype__
     assert all(a == b for a, b in zip(before, after))
     assert before.guid == after.guid
@@ -47,7 +47,7 @@ def test_json_graph():
     a = before.add_node()
     b = before.add_node()
     before.add_edge(a, b)
-    after = compas.json_loads(compas.json_dumps(before))
+    after = compas.json_loads(compas.json_dumps(before))  # type: Graph
     assert before.__dtype__ == after.__dtype__
     # assert before.attributes == after.attributes
     assert all(before.has_node(node) for node in after.nodes())
@@ -59,7 +59,7 @@ def test_json_graph():
 
 def test_json_mesh():
     before = Mesh.from_vertices_and_faces([[0, 0, 0], [1, 0, 0], [1, 1, 0], [0, 1, 0]], [[0, 1, 2, 3]])
-    after = compas.json_loads(compas.json_dumps(before))
+    after = compas.json_loads(compas.json_dumps(before))  # type: Mesh
     assert before.__dtype__ == after.__dtype__
     # assert before.attributes == after.attributes
     assert all(before.has_vertex(vertex) for vertex in after.vertices())
@@ -95,7 +95,7 @@ def test_json_volmesh():
             ]
         ],
     )
-    after = compas.json_loads(compas.json_dumps(before))
+    after = compas.json_loads(compas.json_dumps(before))  # type: VolMesh
     assert before.__dtype__ == after.__dtype__
     # assert before.attributes == after.attributes
     assert all(before.has_vertex(vertex) for vertex in after.vertices())
@@ -121,12 +121,34 @@ def test_json_zip():
 
     before = Box(frame=Frame(Point(0, 0, 0), Vector(1, 0, 0), Vector(0, 1, 0)), xsize=2, ysize=5, zsize=3)
     compas.json_dumpz(before, zipfile_name)
-    after = compas.json_loadz(zipfile_name)
+    after = compas.json_loadz(zipfile_name)  # type: Box
     assert before.__dtype__ == after.__dtype__
     assert all(a == b for a, b in zip(before.to_vertices_and_faces()[0], after.to_vertices_and_faces()[0]))
     assert before.guid == after.guid
 
 
+def test_json_attributeview():
+    mesh = Mesh.from_meshgrid(10, 10)
+    before = Mesh()
+    for vertex in mesh.vertices():
+        attr = mesh.vertex_attributes(vertex)
+        before.add_vertex(key=vertex, attr_dict=attr)
+    for face in mesh.faces():
+        attr = mesh.face_attributes(face)
+        before.add_face(vertices=mesh.face_vertices(face), fkey=face, attr_dict=attr)
+    after = compas.json_loads(compas.json_dumps(before))  # type: Mesh
+
+    assert before.__dtype__ == after.__dtype__
+    assert all(before.has_vertex(vertex) for vertex in after.vertices())
+    assert all(after.has_vertex(vertex) for vertex in before.vertices())
+    assert all(before.has_face(face) for face in after.faces())
+    assert all(after.has_face(face) for face in before.faces())
+    assert all(before.has_edge(edge) for edge in after.edges())
+    assert all(after.has_edge(edge) for edge in before.edges())
+    assert all(before.face_vertices(a) == after.face_vertices(b) for a, b in zip(before.faces(), after.faces()))
+    assert before.guid == after.guid
+
+
 # temporarily commented because folder does not exist yet on main
 # def test_json_url():
 #     data = compas.json_load('https://raw.githubusercontent.com/compas-dev/compas/main/src/compas/data/schemas/graph.json')