simple-plant-archive-django/plant_catalog/catalog/serializers.py

from rest_framework import serializers
from .models import Plant, PlantImage

class PlantImageSerializer(serializers.ModelSerializer):
    class Meta:
        model = PlantImage
        fields = ['id', 'image']  # Fields to expose for each image


class PlantSerializer(serializers.ModelSerializer):
    images = PlantImageSerializer(many=True, read_only=True)  # Read existing images
    uploaded_images = serializers.ListField(child=serializers.ImageField(), write_only=True, required=False)  # Accept new images

    class Meta:
        model = Plant
        fields = ['id', 'name', 'description', 'buy_price', 'sell_price', 'stock', 'images', 'uploaded_images']  # Include uploaded_images
    
    def create(self, validated_data):
        uploaded_images = validated_data.pop('uploaded_images', [])  # Get images from request
        plant = Plant.objects.create(**validated_data)

        for image in uploaded_images:
            PlantImage.objects.create(plant=plant, image=image)  # Save each image

        return plant
    
    def update(self, instance, validated_data):
        uploaded_images = validated_data.pop('uploaded_images', [])

        instance.name = validated_data.get('name', instance.name)
        instance.description = validated_data.get('description', instance.description)
        instance.buy_price = validated_data.get('buy_price', instance.buy_price)
        instance.sell_price = validated_data.get('sell_price', instance.sell_price)
        instance.stock = validated_data.get('stock', instance.stock)
        instance.save()

        for image in uploaded_images:
            PlantImage.objects.create(plant=instance, image=image)  # Save new images

        return instance