Added some logic

backend/apps/books/serializers.py

@@ -0,0 +1,25 @@
+from rest_framework import serializers
+
+from apps.books.models import Book
+from apps.shelves.serializers import ShelfSerializer
+from apps.shelves.models import Shelf
+
+class BookSerializer(serializers.ModelSerializer):
+    #shelf = ShelfSerializer(read_only=True)
+    #shelf_id = serializers.PrimaryKeyRelatedField(
+        #queryset=Shelf.objects.all(),
+        #source="shelf", 
+        #write_only=True
+    #)
+    
+    
+    class Meta: 
+        model = Book
+        fields = [
+            "id",
+            "name",
+            "isbn", 
+            #"shelf",
+            #"shelf_id"
+        ]
+        read_only_fields = ["id"]