add possible values

django_setup_configuration/documentation/model_directive.py

@@ -3,7 +3,7 @@
 import textwrap
 from dataclasses import dataclass
 from enum import Enum
-from typing import Annotated, Any, Dict, Type, Union, get_args, get_origin
+from typing import Annotated, Any, Dict, Type, Union, get_args, get_origin, Literal
 
 import ruamel.yaml
 from docutils import nodes
@@ -75,10 +75,17 @@ def insert_example_with_comments(
         yaml_set_comment_with_max_length(
             example_data, field_name, field_info.description, 80, indent=depth * 2
         )
+
     if default := get_default_from_field_info(field_info):
         example_data.yaml_set_comment_before_after_key(
             field_name, f"default value: {default}", indent=depth * 2
         )
+
+    if get_origin(field_info.annotation) == Literal:
+        example_data.yaml_set_comment_before_after_key(
+            field_name, f"possible values: {get_args(field_info.annotation)}", indent=depth * 2
+        )
+
     example_data.yaml_set_comment_before_after_key(
         field_name, f"required: {field_info.is_required()}", indent=depth * 2
     )
@@ -166,15 +173,16 @@ def process_field_type(
         ]
         return PolymorphicExample(example=data, commented_out_examples=other)
 
-    # Handle Pydantic models
-    if isinstance(field_type, type) and issubclass(field_type, BaseModel):
-        return generate_model_example(field_type, depth=depth)
 
     # Handle lists
     if get_origin(field_type) == list:
         list_type = get_args(field_type)[0]
         return [process_field_type(list_type, field_info, field_name, depth + 1)]
 
+    # Handle Pydantic models
+    if isinstance(field_type, type) and issubclass(field_type, BaseModel):
+        return generate_model_example(field_type, depth=depth)
+
 
 def generate_basic_example(field_type: Any, field_info: FieldInfo) -> Any:
     """