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Update append_asset docs to use ifc_edit now that library accepts file_path

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Bruno Postle 2026-02-28 07:47:07 +00:00
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CLAUDE.md
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@ -563,26 +563,23 @@ Key libraries:
### Appending a library type ### Appending a library type
Use `ifc_edit("project.append_asset", ...)` via MCP if available. At the time of writing, the MCP coercion layer had no handler for `ifcopenshell.file`-typed parameters, so the `library` argument could not be passed through `ifc_edit` — this may have since been fixed in ifcedit/ifcmcp. If MCP does not work, fall back to Python: The `library` parameter is typed `file_path` — ifcmcp opens the file automatically from the path string. Use `ifc_edit` directly:
```python ```
import ifcopenshell, ifcopenshell.api.project, ifcopenshell.api.type # 1. Find the element ID in the library file
# (load it temporarily, query, then reload your model)
ifc_load("/usr/lib/python3.14/site-packages/bonsai/bim/data/libraries/IFC4 Landscape Library.ifc")
ifc_select("IfcGeographicElementType") # find the "Apple" entry and note its id
LIB = '/usr/lib/python3.14/site-packages/bonsai/bim/data/libraries/IFC4 Landscape Library.ifc' # 2. Reload your model, then append the asset by library path + element id
f = ifcopenshell.open('model.ifc') ifc_load("model.ifc")
lib = ifcopenshell.open(LIB) ifc_edit("project.append_asset", '{"library": "/usr/lib/python3.14/site-packages/bonsai/bim/data/libraries/IFC4 Landscape Library.ifc", "element": "<type_id_from_library>"}')
# → returns the new type entity id in the active model
# Find the type in the library # 3. Assign the type to an occurrence
apple_type_in_lib = next(t for t in lib.by_type('IfcGeographicElementType') if t.Name == 'Apple') ifc_edit("type.assign_type", '{"related_objects": "<occurrence_id>", "relating_type": "<new_type_id>"}')
# Copy into the model — returns the new type entity in f ifc_save()
apple = ifcopenshell.api.project.append_asset(f, library=lib, element=apple_type_in_lib)
# Assign to an occurrence
tree = f.by_id(<tree_element_id>)
ifcopenshell.api.type.assign_type(f, related_objects=[tree], relating_type=apple)
f.write('model.ifc')
``` ```
`append_asset` copies all dependent geometry, materials, and styles. The occurrence keeps its own name, placement, and properties while getting the type's geometry. `append_asset` copies all dependent geometry, materials, and styles. The occurrence keeps its own name, placement, and properties while getting the type's geometry.