initial work on adding models for starring repos.

I'm sick of using `git stash`.

data/database.py

@@ -4,7 +4,9 @@ import uuid
 
 from random import SystemRandom
 from datetime import datetime
-from peewee import *
+from peewee import (Proxy, MySQLDatabase, SqliteDatabase, PostgresqlDatabase, fn, CharField,
+                    BooleanField, IntegerField, DateTimeField, ForeignKeyField, TextField,
+                    BigIntegerField)
 from data.read_slave import ReadSlaveModel
 from sqlalchemy.engine.url import make_url
 from util.names import urn_generator
@@ -265,6 +267,20 @@ class Repository(BaseModel):
     super(Repository, self).delete_instance(recursive=False, delete_nullable=False)
 
 
+class Star(BaseModel):
+  user = ForeignKeyField(User, index=True, related_name="stars")
+  repository = ForeignKeyField(Repository, index=True, related_name="stargazers")
+  created = DateTimeField(default=datetime.now)
+
+  class Meta:
+    database = db
+    read_slaves = (read_slave,)
+    indexes = (
+      # create a unique index on user and repository
+      (('user', 'repository'), True),
+    )
+
+
 class Role(BaseModel):
   name = CharField(index=True, unique=True)
 
@@ -550,4 +566,4 @@ all_models = [User, Repository, Image, AccessToken, Role, RepositoryPermission,
               Notification, ImageStorageLocation, ImageStoragePlacement,
               ExternalNotificationEvent, ExternalNotificationMethod, RepositoryNotification,
               RepositoryAuthorizedEmail, ImageStorageTransformation, DerivedImageStorage,
-              TeamMemberInvite]
+              TeamMemberInvite, Star]