Chapter_31

⚡ Chapter 31 – CRUD with FastAPI & MongoDB

In this chapter, we build a Student Management API using:

• FastAPI for REST API endpoints
• MongoDB Atlas for database storage
• PyMongo for database queries

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🔹 CRUD Mapping

• Create → POST /add
• Read → GET /show
• Update → POST /edit
• Delete → GET /remove

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🔹 API Endpoints

1. Show All Students

GET /show

Response:

{
  "data": [
    {"_id": "66abc123", "name": "Riya", "roll": 101, "marks": 85}
  ]
}

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2. Add Student

POST /add?name=Riya&roll=101&marks=85

Response:

{"status": "66abc123"}

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3. Edit Student

POST /edit?id=66abc123&name=Riya Singh

Response:

{"status": 1}

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4. Delete Student

GET /remove?id=66abc123

Response:

{"status": 1}

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🔹 Flow Diagram

Client ---> FastAPI Routes ---> PyMongo ---> MongoDB Atlas

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🧠 Summary

• FastAPI + MongoDB is powerful for backend APIs
• CRUD maps to POST/GET endpoints
• ObjectId must be converted to string for JSON responses