Merge branch 'jmagnusson-printable-arrow-obj'

sqlalchemy_utils/types/arrow.py

@@ -74,6 +74,9 @@ class ArrowType(types.TypeDecorator, ScalarCoercible):
             return arrow.get(value)
         return value
 
+    def process_literal_param(self, value, dialect):
+        return str(value)
+
     def _coerce(self, value):
         if value is None:
             return None

tests/types/test_arrow.py

@@ -56,3 +56,11 @@ class TestArrowDateTimeType(object):
         assert article.created_at == time == local
         session.commit()
         assert article.created_at == time
+
+    def test_literal_param(self, session, Article):
+        time = arrow.arrow.utcnow()
+        article = Article(created_at=time)
+        session.add(article)
+        clause = Article.created_at > '2015-01-01'
+        compiled = str(clause.compile(compile_kwargs={"literal_binds": True}))
+        assert compiled == 'article.created_at > 2015-01-01'