fix: just forgot something...

src/backend/memo/serializers.py

@@ -0,0 +1,33 @@
+from rest_framework import serializers
+from .models import Memo, MemoImage
+
+
+class MemoImageSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = MemoImage
+        fields = ['id', 'image', 'uploaded_at', 'alt_text']
+
+
+class MemoSerializer(serializers.ModelSerializer):
+    images = MemoImageSerializer(many=True, read_only=True)
+    content_preview = serializers.ReadOnlyField()
+    created_by_name = serializers.CharField(source='created_by.username', read_only=True)
+
+    class Meta:
+        model = Memo
+        fields = ['id', 'title', 'content', 'content_preview', 'created_by', 'created_by_name',
+                 'created_at', 'updated_at', 'is_active', 'images']
+        read_only_fields = ['created_by', 'created_at', 'updated_at']
+
+    def create(self, validated_data):
+        validated_data['created_by'] = self.context['request'].user
+        return super().create(validated_data)
+
+
+class MemoListSerializer(serializers.ModelSerializer):
+    content_preview = serializers.ReadOnlyField()
+    created_by_name = serializers.CharField(source='created_by.username', read_only=True)
+
+    class Meta:
+        model = Memo
+        fields = ['id', 'title', 'content_preview', 'created_by_name', 'updated_at']