add models for groups

bookwyrm/models/__init__.py

@@ -21,6 +21,8 @@ from .relationship import UserFollows, UserFollowRequest, UserBlocks
 from .report import Report, ReportComment
 from .federated_server import FederatedServer
 
+from .group import Group, GroupList, GroupMember
+
 from .import_job import ImportJob, ImportItem
 
 from .site import SiteSettings, SiteInvite

bookwyrm/models/group.py

@@ -0,0 +1,45 @@
+""" do book related things with other users """
+from django.apps import apps
+from django.db import models
+from django.utils import timezone
+
+from bookwyrm.settings import DOMAIN
+from .base_model import BookWyrmModel
+from . import fields
+
+
+class Group(BookWyrmModel):
+    """A group of users"""
+
+    name = fields.CharField(max_length=100)
+    manager = fields.ForeignKey(
+        "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,
+        through="GroupMember",
+        through_fields=("group", "user"),
+        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"""
+
+    group = models.ForeignKey("Group", on_delete=models.CASCADE)
+    user = models.ForeignKey("User", on_delete=models.CASCADE)