Add postgresql.create_schema()

rattail_fabric2/postgresql.py

@@ -115,6 +115,14 @@ def create_db(c, name, owner=None, port=None, checkfirst=True):
         c.sudo(cmd, user='postgres')
 
 
+def create_schema(c, name, dbname, owner='rattail', port=None):
+    """
+    Create a schema within a PostgreSQL database.
+    """
+    sql_ = "create schema if not exists {} authorization {}".format(name, owner)
+    sql(c, sql_, database=dbname, port=port)
+
+
 def drop_db(c, name, checkfirst=True):
     """
     Drop a PostgreSQL database.