Refactor with registry.

koans/data.py

@@ -0,0 +1,32 @@
+from data import Registry, RowModel
+from data.columns import String, Timestamp, Integer
+
+
+class Koan(RowModel):
+    """
+    Schema
+    ======
+    CREATE TABLE koans(
+      koanid INTEGER GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+      communityid INTEGER NOT NULL REFERENCES communities ON UPDATE CASCADE ON DELETE CASCADE,
+      name TEXT NOT NULL,
+      message TEXT NOT NULL,
+      created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+      _timestamp TIMESTAMPTZ NOT NULL DEFAULT NOW()
+    );
+    """
+    _tablename_ = 'koans'
+    _cache_ = {}
+
+    koanid = Integer(primary=True)
+    communityid = Integer()
+    name = String()
+    message = String()
+    created_at = Timestamp()
+    _timestamp = Timestamp()
+
+
+class KoanData(Registry):
+    VERSION = ('KOANS', 1)
+
+    koans = Koan.table