feat ⭐ add resources to db similar to products to db

oscar_odin/mappings/resources.py

@@ -0,0 +1,44 @@
+from oscar_odin.mappings.context import ModelMapperContext
+from oscar_odin.utils import validate_resources
+
+
+def resources_to_db(
+    resources,
+    fields_to_update,
+    identifier_mapping,
+    model_mapper,
+    delete_related=False,
+    clean_instances=True,
+    skip_invalid_resources=False,
+    error_identifiers=None,
+):
+    """Map mulitple resources to a model and store them in the database.
+
+    The method will first bulk update or create the foreign keys
+    After that all the resources will be bulk saved.
+    At last all related models can will be saved and set on the record.
+    """
+    error_identifiers = error_identifiers or identifier_mapping.get(model_mapper.to_obj)
+    valid_resources, resource_errors = validate_resources(resources, error_identifiers)
+    if not skip_invalid_resources and resource_errors:
+        return [], resource_errors
+
+    context = ModelMapperContext(
+        model_mapper.to_obj,
+        delete_related=delete_related,
+        error_identifiers=error_identifiers,
+    )
+    result = model_mapper.apply(valid_resources, context=context)
+
+    try:
+        instances = list(result)
+    except TypeError:  # it is not a list
+        instances = [result]
+
+    saved_resources, errors = context.bulk_save(
+        instances,
+        fields_to_update,
+        identifier_mapping,
+        clean_instances,
+    )
+    return saved_resources, resource_errors + errors