Merge pull request #224 from LongBeachHXC/add-enum-field-as-literal

Adding support for datamodel-code-generator's enum-field-as-literal argument

Author: koxudaxi

fastapi_code_generator/__main__.py

@@ -3,7 +3,7 @@
 from typing import Dict, List, Optional
 
 import typer
-from datamodel_code_generator import PythonVersion, chdir
+from datamodel_code_generator import LiteralType, PythonVersion, chdir
 from datamodel_code_generator.format import CodeFormatter
 from datamodel_code_generator.imports import Import, Imports
 from datamodel_code_generator.reference import Reference
@@ -25,13 +25,25 @@ def main(
     output_dir: Path = typer.Option(..., "--output", "-o"),
     model_file: str = typer.Option(None, "--model-file", "-m"),
     template_dir: Optional[Path] = typer.Option(None, "--template-dir", "-t"),
+    enum_field_as_literal: Optional[LiteralType] = typer.Option(
+        None, "--enum-field-as-literal"
+    ),
 ) -> None:
     input_name: str = input_file.name
     input_text: str = input_file.read()
     if model_file:
         model_path = Path(model_file).with_suffix('.py')
     else:
         model_path = MODEL_PATH
+    if enum_field_as_literal:
+        return generate_code(
+            input_name,
+            input_text,
+            output_dir,
+            template_dir,
+            model_path,
+            enum_field_as_literal,
+        )
     return generate_code(input_name, input_text, output_dir, template_dir, model_path)
 
 
@@ -51,15 +63,18 @@ def generate_code(
     output_dir: Path,
     template_dir: Optional[Path],
     model_path: Optional[Path] = None,
+    enum_field_as_literal: Optional[str] = None,
 ) -> None:
     if not model_path:
         model_path = MODEL_PATH
     if not output_dir.exists():
         output_dir.mkdir(parents=True)
     if not template_dir:
         template_dir = BUILTIN_TEMPLATE_DIR
-
-    parser = OpenAPIParser(input_text)
+    if enum_field_as_literal:
+        parser = OpenAPIParser(input_text, enum_field_as_literal=enum_field_as_literal)
+    else:
+        parser = OpenAPIParser(input_text)
     with chdir(output_dir):
         models = parser.parse()
     if not models: