update group and list models

- remove GroupList model
- add a group foreign key value  to List model
- remove reference to lists in Group model

bookwyrm/models/__init__.py

@@ -21,7 +21,7 @@ from .relationship import UserFollows, UserFollowRequest, UserBlocks
 from .report import Report, ReportComment
 from .federated_server import FederatedServer
 
-from .group import Group, GroupList, GroupMember
+from .group import Group, GroupMember
 
 from .import_job import ImportJob, ImportItem
 

bookwyrm/models/group.py

@@ -16,14 +16,6 @@ class Group(BookWyrmModel):
         "User", on_delete=models.PROTECT)
     description = fields.TextField(blank=True, null=True)
     privacy = fields.PrivacyField()
-
-    lists = models.ManyToManyField(
-        "List",
-        symmetrical=False,
-        through="GroupList",
-        through_fields=("group", "book_list"),
-    )
-
     members = models.ManyToManyField(
         "User",
         symmetrical=False,
@@ -32,12 +24,6 @@ class Group(BookWyrmModel):
         related_name="members"
     )
 
-class GroupList(BookWyrmModel):
-    """Lists that group members can edit"""
-
-    group = models.ForeignKey("Group", on_delete=models.CASCADE)
-    book_list = models.ForeignKey("List", on_delete=models.CASCADE)
-
 class GroupMember(models.Model):
     """Users who are members of a group"""
 

bookwyrm/models/list.py

@@ -1,4 +1,5 @@
 """ make a list of books!! """
+from dataclasses import field
 from django.apps import apps
 from django.db import models
 from django.utils import timezone
@@ -16,6 +17,7 @@ CurationType = models.TextChoices(
         "closed",
         "open",
         "curated",
+        "group"
     ],
 )
 
@@ -32,6 +34,11 @@ class List(OrderedCollectionMixin, BookWyrmModel):
     curation = fields.CharField(
         max_length=255, default="closed", choices=CurationType.choices
     )
+    group = models.ForeignKey(
+        "Group",
+        on_delete=models.CASCADE,
+        null=True
+    )
     books = models.ManyToManyField(
         "Edition",
         symmetrical=False,