implement primary keys

test/test_db.py

@@ -20,8 +20,8 @@ def db():
 
 def test_crud(db):
     user = examples.User(name="john", number=23, email="john@foo")
-    assert user.uid
-    assert user._metadata.fields["uid"].unique
+    assert user._metadata.fields[user._metadata.primary_key].unique
+    assert user._metadata.fields[user._metadata.primary_key].primary_key
 
     # insert
     john_something = db.save(user)
@@ -32,7 +32,6 @@ def test_crud(db):
     assert john_something.name == user.name
     assert john_something.number == 23
     assert john_something.email == user.email
-    assert john_something.uid == user.uid
 
     # update
     john_something.name = "james?"
@@ -57,9 +56,9 @@ def test_pointers(db):
     players = db.save(examples.Group(name="players", members=[user]))
 
     user = db.table("User").get(doc_id=user.doc_id)
-    assert user.groups.uid == players.uid
+    assert user.groups.name == players.name
 
-    assert players.members[0].groups.uid == players.uid
+    assert players.members[0].groups.name == players.name
 
 
 def test_subgroups(db):
@@ -76,8 +75,8 @@ def test_subgroups(db):
     assert snw in trek.groups
 
     assert trek.parent is None
-    assert tos.parent.uid == trek.uid
-    assert snw.parent.uid == trek.uid
+    assert tos.parent.name == trek.name
+    assert snw.parent.name == trek.name
 
     unique_users = set([user for group in trek.groups for user in group.members])