adding default ifc objects added from shift-a menu to the current collection

src/blenderbim/blenderbim/bim/module/model/door.py

@@ -484,6 +484,9 @@ class BIM_OT_add_door(bpy.types.Operator, tool.Ifc.Operator):
         mesh = bpy.data.meshes.new("IfcDoor")
         obj = bpy.data.objects.new("IfcDoor", mesh)
         obj.location = spawn_location
+        collection = context.view_layer.active_layer_collection.collection
+        collection.objects.link(obj)
+    
         element = blenderbim.core.root.assign_class(
             tool.Ifc, tool.Collector, tool.Root, obj=obj, ifc_class="IfcDoor", should_add_representation=False
         )

src/blenderbim/blenderbim/bim/module/model/railing.py

@@ -273,6 +273,9 @@ class BIM_OT_add_railing(bpy.types.Operator, tool.Ifc.Operator):
         mesh = bpy.data.meshes.new("IfcRailing")
         obj = bpy.data.objects.new("IfcRailing", mesh)
         obj.location = spawn_location
+        collection = context.view_layer.active_layer_collection.collection
+        collection.objects.link(obj)
+
         body_context = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
         blenderbim.core.root.assign_class(
             tool.Ifc,

src/blenderbim/blenderbim/bim/module/model/roof.py

@@ -514,6 +514,9 @@ class BIM_OT_add_roof(bpy.types.Operator, tool.Ifc.Operator):
         mesh = bpy.data.meshes.new("IfcRoof")
         obj = bpy.data.objects.new("IfcRoof", mesh)
         obj.location = spawn_location
+        collection = context.view_layer.active_layer_collection.collection
+        collection.objects.link(obj)
+
         body_context = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
         blenderbim.core.root.assign_class(
             tool.Ifc,

src/blenderbim/blenderbim/bim/module/model/stair.py

@@ -325,6 +325,9 @@ class BIM_OT_add_clever_stair(bpy.types.Operator, tool.Ifc.Operator):
         mesh = bpy.data.meshes.new("IfcStairFlight")
         obj = bpy.data.objects.new("StairFlight", mesh)
         obj.location = spawn_location
+        collection = context.view_layer.active_layer_collection.collection
+        collection.objects.link(obj)
+        
         body_context = ifcopenshell.util.representation.get_context(ifc_file, "Model", "Body", "MODEL_VIEW")
         element = blenderbim.core.root.assign_class(
             tool.Ifc,

src/blenderbim/blenderbim/bim/module/model/window.py

@@ -453,6 +453,9 @@ class BIM_OT_add_window(bpy.types.Operator, tool.Ifc.Operator):
         mesh = bpy.data.meshes.new("IfcWindow")
         obj = bpy.data.objects.new("IfcWindow", mesh)
         obj.location = spawn_location
+        collection = context.view_layer.active_layer_collection.collection
+        collection.objects.link(obj)
+        
         element = blenderbim.core.root.assign_class(
             tool.Ifc, tool.Collector, tool.Root, obj=obj, ifc_class="IfcWindow", should_add_representation=False
         )