Add embedder docs and config changes (#1684)

mem0/configs/vector_stores/chroma.py

@@ -1,4 +1,4 @@
-from typing import Optional,ClassVar
+from typing import Optional, ClassVar, Dict, Any
 
 from pydantic import BaseModel, Field, model_validator
 
@@ -21,6 +21,17 @@ class ChromaDbConfig(BaseModel):
         if not path and not (host and port):
             raise ValueError("Either 'host' and 'port' or 'path' must be provided.")
         return values
+
+    @model_validator(mode="before")
+    @classmethod
+    def validate_extra_fields(cls, values: Dict[str, Any]) -> Dict[str, Any]:
+        allowed_fields = set(cls.model_fields.keys())
+        input_fields = set(values.keys())
+        extra_fields = input_fields - allowed_fields
+        if extra_fields:
+            raise ValueError(f"Extra fields not allowed: {', '.join(extra_fields)}. Please input only the following fields: {', '.join(allowed_fields)}")
+        return values
     
-    class Config:
-        arbitrary_types_allowed = True
+    model_config = {
+        "arbitrary_types_allowed": True,
+    }