fix quoting in order_by, add get_or_none

tests/test_reserved_sql_keywords_escaped.py

@@ -0,0 +1,99 @@
+import databases
+import pytest
+import sqlalchemy
+
+import ormar
+
+from tests.settings import DATABASE_URL
+
+database = databases.Database(DATABASE_URL, force_rollback=True)
+metadata = sqlalchemy.MetaData()
+
+
+class BaseMeta(ormar.ModelMeta):
+    metadata = metadata
+    database = database
+
+
+class User(ormar.Model):
+    class Meta(BaseMeta):
+        tablename = "user"
+
+    id: int = ormar.Integer(primary_key=True, autoincrement=True, nullable=False)
+    user: str = ormar.String(
+        unique=True, index=True, nullable=False, max_length=255
+    )  # ID of the user on auth0
+    first: str = ormar.String(nullable=False, max_length=255)
+    last: str = ormar.String(nullable=False, max_length=255)
+    email: str = ormar.String(unique=True, index=True, nullable=False, max_length=255)
+    display_name: str = ormar.String(
+        unique=True, index=True, nullable=False, max_length=255
+    )
+    pic_url: str = ormar.Text(nullable=True)
+
+
+class Task(ormar.Model):
+    class Meta(BaseMeta):
+        tablename = "task"
+
+    id: int = ormar.Integer(primary_key=True, autoincrement=True, nullable=False)
+    from_: str = ormar.String(name="from", nullable=True, max_length=200)
+    user = ormar.ForeignKey(User)
+
+
+@pytest.fixture(autouse=True, scope="module")
+def create_test_database():
+    engine = sqlalchemy.create_engine(DATABASE_URL)
+    metadata.drop_all(engine)
+    metadata.create_all(engine)
+    yield
+    metadata.drop_all(engine)
+
+
+@pytest.mark.asyncio
+async def test_single_model_quotes():
+    async with database:
+        await User.objects.create(
+            user="test",
+            first="first",
+            last="last",
+            email="email@com.com",
+            display_name="first last",
+        )
+
+        user = await User.objects.order_by("user").get(first="first")
+        assert user.last == "last"
+        assert user.email == "email@com.com"
+
+
+@pytest.mark.asyncio
+async def test_two_model_quotes():
+    async with database:
+        user = await User.objects.create(
+            user="test",
+            first="first",
+            last="last",
+            email="email@com.com",
+            display_name="first last",
+        )
+
+        await Task(user=user, from_="aa").save()
+        await Task(user=user, from_="bb").save()
+
+        task = (
+            await Task.objects.select_related("user")
+            .order_by("user__user")
+            .get(from_="aa")
+        )
+        assert task.user.last == "last"
+        assert task.user.email == "email@com.com"
+
+        tasks = await Task.objects.select_related("user").order_by("-from").all()
+        assert len(tasks) == 2
+        assert tasks[0].user.last == "last"
+        assert tasks[0].user.email == "email@com.com"
+        assert tasks[0].from_ == "bb"
+
+        assert tasks[1].user.last == "last"
+        assert tasks[1].user.email == "email@com.com"
+        assert tasks[1].from_ == "aa"