fastapi

FastAPI.Path : TypeError: Path() missing 1 required positional argument: 'default' Question: From tutorials I’ve seen the below used. However, when I try to replicate (running Docker container locally) I observe the below error. @app.get("/get-student/{student_id}") # path parameters and query parameters have no overlap def get_student(student_id: int = Path( description="student ID", gt=0 #minimum ID = 1, …

How to make a JSON POST request from Java client to Python FastAPI server? Question: I send a post request from a java springboot application like this: String requestBody = gson.toJson(sbert); System.out.println(requestBody); // If I print this, and use this in postman it works! HttpRequest add_request = HttpRequest.newBuilder() .uri(URI.create("http://localhost:4557/sbert_similarity")) .POST(HttpRequest.BodyPublishers.ofString(requestBody)) .header("Content-Type", "application/json") .build(); HttpResponse<String> response …

How to raise custom exceptions in a FastAPI middleware? Question: I have a simple FastAPI setup with a custom middleware class inherited from BaseHTTPMiddleware. Inside this middleware class, I need to terminate the execution flow under certain conditions. So, I created a custom exception class named CustomError and raised the exception. from fastapi import FastAPI, …

How to delete rows by a condition using sqlalmchemy and fastapi? Question: I’m trying to delete some rows that a ‘null’ in a Postgresql db by this: async def delete_empty_batches(): query = Batches.delete().where(Batches.c.acquired_by_warehouse_date is None) database.execute(query).fetchall() s = Batches.select() return await database.execute(s).fetchall() But nothing happens. I have tried to make a query in pgAdmin and …

Can I return 400 error instead of 422 error Question: I validate data using Pydantic schema in my FastAPI project and if it is not ok it returns 422. Can I change it to 400? Asked By: Konstantinos || Source Answers: Yes, you can. For example, you can apply the next exception handler: from fastapi …

FastAPI unit test returns 422 Question: I am new to python and FastAPI and writing some test code for FastAPI endpoints. I have the following function for unit testing, but when I run it I get back status code 422. Not sure what I am doing wrong: def test_create_event(self): my_date = datetime.date(2023, 6, 15) data …

What is the difference between Security and Depends in FastAPI? Question: This is my code: from fastapi import FastAPI, Depends, Security from fastapi.security import HTTPBearer bearer = HTTPBearer() @app.get("/") async def root(q = Security(bearer)): return {‘q’: q} @app.get("/Depends") async def root(q = Depends(bearer)): return {‘q’: q,} Both routes give precisely the same result and act …

SQL query to create a nested pydantic structure Question: While working with SQLAlchemy 2.x and FastAPI, I ran into the problem of creating a nested structure for pydantic serialization. The specific essence of the problem lies in the implementation of the sql query. The fact is that the received data comes as a single tuple …

How to assign the url of the uploaded photo from AWS to database(postgresql) model in the same endpoint Question: Below that there is an endpoint that uploads a photo to aws-s3 and return the url of the photo. This works well. session1 = boto3.Session( aws_access_key_id=’XXXXXXXXXX’, aws_secret_access_key=’XXXXXXXXX’ ) S3_BUCKET_NAME = "XXXXX" s3 = session1.resource("s3") bucket = …

Finding a specific element in nested Array MongoDB Question: DB Schema [{ "_id": 1, "name": "city1", "districts": [ { "id": 5, "name": "district 1", "neighborhoods": [ { "id": 309, "name": "neighborhood 1" } ] }, { "id": 6, "name": "district 2", "neighborhoods": [ { "id": 52280, "name": "neighborhood 2" } ] } }, { "_id": …