[Python] How do I send list of dictionaries as Body parameter together with Files in FastAPI?

In FastAPI, in order to pass a list of dictionaries, we usually define a pydantic schema and define a field as follows:

param: List[schema_model]


The issue I am facing is that I have files to attach to my request. I could not find a way to define a schema and File upload in router function. For that I am defining all the parameters (request body) as Body parameters like below:

@router.post("/", response_model=DataModelOut)
async def create_policy_details(request:Request,
countryId: str = Body(...),
policyDetails: List[dict] = Body(...),
leaveTypeId: str = Body(...),
branchIds: List[str] = Body(...),
cityIds: List[str] = Body(...),
files: List[UploadFile] = File(None)
):


When I send a request using form-data option of postman, it is showing 0:value is not a valid dict for policyDetails parameter. I am sending [{"name":"name1","department":"d1"}]. It is saying not a valid dict, Even though I send valid dict. Can any one help me with this?

DataModelOut class:

class DataModelOut(BaseModel):
message: str = ""
id: str = ""
input_data: dict = None
result: List[dict] = []
statusCode: int

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