pydantic-handlebars

from pydantic import BaseModel from pydantic_handlebars import HandlebarsTemplate class UserProfile(BaseModel): name: str title: str company: str # Define your Handlebars template template_string = """ Hello, my name is {{name}}. I am a {{title}} at {{company}}. """ # Create a Pydantic model instance with data user_data = UserProfile(name="Alice", title="Software Engineer", company="Acme Corp") # Instantiate the HandlebarsTemplate with the template string template = HandlebarsTemplate(template_string) # Render the template using the Pydantic model's data rendered_output = template.render(user_data.model_dump()) print(rendered_output) # Example with missing data (will cause Pydantic validation error if not handled) try: invalid_data = UserProfile(name="Bob", title="Manager") # Missing 'company' except Exception as e: print(f"Caught expected error: {e.__class__.__name__}") # Example of direct Handlebars rendering issues (e.g., missing variable in template context) # This would typically be caught by Pydantic if the model was strict enough or template tried to access non-existent field. loose_template_string = "Hello, {{missing_field}}!" loose_template = HandlebarsTemplate(loose_template_string) # This specific `render` call doesn't raise if 'missing_field' is just not found, but it highlights template data needs. rendered_loose = loose_template.render({"name": "Charlie"}) print(f"Rendered with missing data (Handlebars default behavior): {rendered_loose}")