DRF Serializers & Request/Response Lifecycle

1. Deep Architecture

DRF Serializers process data translation between model instances and Python native datatypes. Under the hood, this converts data to JSON representations. During deserialization, it validates inputs, returning validated data dictionaries or throwing validation exceptions.

2. The Feynman Gatekeeper

[KNOWLEDGE CHECK] Explain how serializers process model fields into JSON strings, and why read_only_fields are excluded during updates.

3. The Code

from rest_framework import serializers
from sanjaya_core.models import Video

class VideoAPISerializer(serializers.ModelSerializer):
    class Meta:
        model = Video
        fields = ['id', 'title', 'file_path', 'created_at']
        read_only_fields = ['id', 'created_at']

4. The Funnel

Stat Level-Up: API Architect (Lvl 1).
Sanjaya Integration: Provide clean JSON api response payloads to populate Sanjaya’s front-end client states.