Changed work of shelf books

backend/apps/books/serializers.py

@@ -1,26 +1,17 @@
 from rest_framework import serializers
 
-from apps.shelves.serializers import ShelfSerializer
 from apps.authors.serializers import AuthorSerializer
 from apps.books.models import Book
-from apps.shelves.models import Shelf
 from apps.authors.models import Author
 
 class BookSerializer(serializers.ModelSerializer):
-    shelf = ShelfSerializer(read_only=True)
-    shelf_id = serializers.PrimaryKeyRelatedField(
-        queryset=Shelf.objects.all(),
-        source="shelf", 
-        write_only=True
-    )
-    
     authors = AuthorSerializer(many=True, read_only=True)
     authors_id = serializers.PrimaryKeyRelatedField(
         queryset=Author.objects.all(),
         source="authors",
         many=True,
-        allow_null=True,
-        write_only=True
+        write_only=True,
+        required=False
     )
     
     class Meta: 
@@ -28,27 +19,23 @@ class BookSerializer(serializers.ModelSerializer):
         fields = [
             "id",
             "name",
-            "isbn", 
-            "shelf",
-            "shelf_id",
+            "isbn",
             "authors",
             "authors_id"
         ]
         read_only_fields = ["id"]
     
 
-    def __init__(self, instance=None, data=..., **kwargs):
-        super().__init__(instance, data, **kwargs)
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
 
         request = self.context.get("request")        
-        if request and request.user:
-            self.fields["shelf_id"].queryset = Shelf.objects.filter(
-                user=request.user
-            )
-
+        if request and request.user and request.user.is_authenticated:
             self.fields["authors_id"].queryset = Author.objects.filter(
                 user=request.user
             )
+        else:
+            self.fields["authors_id"].queryset = Author.objects.none()
 
             
     def create(self, validated_data):