Move to_const function from Graphene into Graphene-Django (#992) (#996)

Co-authored-by: Jonathan Kim <jkimbo@gmail.com>

graphene_django/converter.py

@@ -22,13 +22,14 @@ from graphene import (
     Time,
 )
 from graphene.types.json import JSONString
-from graphene.utils.str_converters import to_camel_case, to_const
+from graphene.utils.str_converters import to_camel_case
 from graphql import GraphQLError, assert_valid_name
 from graphql.pyutils import register_description
 
 from .compat import ArrayField, HStoreField, JSONField, RangeField
 from .fields import DjangoConnectionField, DjangoListField
 from .settings import graphene_settings
+from .utils.str_converters import to_const
 
 
 def convert_choice_name(name):

graphene_django/utils/str_converters.py

@@ -0,0 +1,6 @@
+import re
+from unidecode import unidecode
+
+
+def to_const(string):
+    return re.sub(r"[\W|^]+", "_", unidecode(string)).upper()

graphene_django/utils/tests/test_str_converters.py

@@ -0,0 +1,9 @@
+from ..str_converters import to_const
+
+
+def test_to_const():
+    assert to_const('snakes $1. on a "#plane') == "SNAKES_1_ON_A_PLANE"
+
+
+def test_to_const_unicode():
+    assert to_const(u"Skoða þetta unicode stöff") == "SKODA_THETTA_UNICODE_STOFF"

setup.py

@@ -58,6 +58,7 @@ setup(
         "graphql-core>=3.1.0,<4",
         "Django>=2.2",
         "promise>=2.1",
+        "unidecode>=1.1.1,<2",
     ],
     setup_requires=["pytest-runner"],
     tests_require=tests_require,