File Uploads

def combine_multipart_data(operations: dict, files_map: dict, files: dict) -> dict:
    """
    Combine multipart form data for GraphQL file uploads.
    
    Parameters:
    - operations: GraphQL operations dict
    - files_map: Mapping of file placeholders to form fields
    - files: Dict of uploaded files
    
    Returns:
    Combined GraphQL request dict with file objects
    """

upload_scalar: ScalarType

from ariadne import make_executable_schema, upload_scalar

type_defs = """
    scalar Upload
    
    type Mutation {
        uploadFile(file: Upload!): String!
    }
"""

mutation = MutationType()

@mutation.field("uploadFile")
def resolve_upload_file(_, info, file):
    # file is a file-like object
    content = file.read()
    return f"Uploaded {len(content)} bytes"

schema = make_executable_schema(type_defs, mutation, upload_scalar)