Extend the bookshelf implementation

ram/bookshelf/serializers.py

@@ -0,0 +1,26 @@
+from rest_framework import serializers
+from bookshelf.models import Book, Author, Publisher
+from metadata.serializers import TagSerializer
+
+
+class AuthorSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Author
+        fields = "__all__"
+
+
+class PublisherSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Publisher
+        fields = "__all__"
+
+
+class BookSerializer(serializers.ModelSerializer):
+    authors = AuthorSerializer(many=True)
+    publisher = PublisherSerializer()
+    tags = TagSerializer(many=True)
+
+    class Meta:
+        model = Book
+        fields = "__all__"
+        read_only_fields = ("creation_time", "updated_time")