fix: Make model_name optional for custom embedders

Co-Authored-By: Joe Moura <joao@crewai.com>

src/crewai/utilities/embedding_configurator.py

@@ -66,11 +66,9 @@ class EmbeddingConfigurator:
             )
 
         embedding_function = self.embedding_functions[provider]
-        return (
-            embedding_function(config)
-            if provider == "custom"
-            else embedding_function(config, model_name)
-        )
+        if provider == "custom":
+            return embedding_function(config)
+        return embedding_function(config, model_name)
 
     @staticmethod
     def _create_default_embedding_function():
@@ -210,13 +208,13 @@ class EmbeddingConfigurator:
         )
 
     @staticmethod
-    def _configure_custom(config, model_name):
+    def _configure_custom(config, model_name=None):
         """Configure a custom embedding function.
         
         Args:
             config: Configuration dictionary containing:
                 - embedder: Custom EmbeddingFunction instance
-            model_name: Not used for custom embedders
+            model_name: Not used for custom embedders, defaults to None
             
         Returns:
             EmbeddingFunction: The validated custom embedding function

tests/memory/test_memory_reset.py

@@ -74,7 +74,11 @@ def test_memory_reset_with_custom_provider(temp_db_dir):
             return [[0.5] * 10] * len(input)
 
     memory = ShortTermMemory(
-        path=str(temp_db_dir), embedder_config={"provider": CustomEmbedder()}
+        path=str(temp_db_dir),
+        embedder_config={
+            "provider": "custom",
+            "config": {"embedder": CustomEmbedder()}
+        }
     )
     memory.reset()  # Should work with custom embedder
 
@@ -132,7 +136,11 @@ def test_memory_reset_cleans_up_files(temp_db_dir):
         if "CREWAI_EMBEDDING_PROVIDER" in os.environ:
             del os.environ["CREWAI_EMBEDDING_PROVIDER"]
         memory = ShortTermMemory(
-            path=str(temp_db_dir), embedder_config={"provider": TestEmbedder()}
+            path=str(temp_db_dir),
+            embedder_config={
+                "provider": "custom",
+                "config": {"embedder": TestEmbedder()}
+            }
         )
         memory.save("test memory", {"test": "metadata"})
         assert any(temp_db_dir.iterdir())  # Directory should have files