Added required conversion to model and form fields. Fixed #2

graphene_django/converter.py

@@ -47,7 +47,7 @@ def convert_django_field_with_choices(field, registry=None):
                 return named_choices_descriptions[self.name]
 
         enum = Enum(name, list(named_choices), type=EnumWithDescriptionsType)
-        return enum(description=field.help_text)
+        return enum(description=field.help_text, required=not field.null)
     return convert_django_field(field, registry)
 
 
@@ -67,12 +67,12 @@ def convert_django_field(field, registry=None):
 @convert_django_field.register(models.FileField)
 @convert_django_field.register(UUIDField)
 def convert_field_to_string(field, registry=None):
-    return String(description=field.help_text)
+    return String(description=field.help_text, required=not field.null)
 
 
 @convert_django_field.register(models.AutoField)
 def convert_field_to_id(field, registry=None):
-    return ID(description=field.help_text)
+    return ID(description=field.help_text, required=not field.null)
 
 
 @convert_django_field.register(models.PositiveIntegerField)
@@ -81,7 +81,7 @@ def convert_field_to_id(field, registry=None):
 @convert_django_field.register(models.BigIntegerField)
 @convert_django_field.register(models.IntegerField)
 def convert_field_to_int(field, registry=None):
-    return Int(description=field.help_text)
+    return Int(description=field.help_text, required=not field.null)
 
 
 @convert_django_field.register(models.BooleanField)
@@ -91,18 +91,18 @@ def convert_field_to_boolean(field, registry=None):
 
 @convert_django_field.register(models.NullBooleanField)
 def convert_field_to_nullboolean(field, registry=None):
-    return Boolean(description=field.help_text)
+    return Boolean(description=field.help_text, required=not field.null)
 
 
 @convert_django_field.register(models.DecimalField)
 @convert_django_field.register(models.FloatField)
 def convert_field_to_float(field, registry=None):
-    return Float(description=field.help_text)
+    return Float(description=field.help_text, required=not field.null)
 
 
 @convert_django_field.register(models.DateField)
 def convert_date_to_string(field, registry=None):
-    return DateTime(description=field.help_text)
+    return DateTime(description=field.help_text, required=not field.null)
 
 
 @convert_django_field.register(models.OneToOneRel)
@@ -114,7 +114,7 @@ def convert_onetoone_field_to_djangomodel(field, registry=None):
         if not _type:
             return
 
-        return Field(_type)
+        return Field(_type, required=not field.null)
 
     return Dynamic(dynamic_type)
 
@@ -149,7 +149,7 @@ def convert_relatedfield_to_djangomodel(field, registry=None):
             return
 
         if isinstance(field.field, models.OneToOneField):
-            return Field(_type)
+            return Field(_type, required=not field.field.null)
 
         if is_node(_type):
             return get_connection_field(_type)
@@ -168,7 +168,7 @@ def convert_field_to_djangomodel(field, registry=None):
         if not _type:
             return
 
-        return Field(_type, description=field.help_text)
+        return Field(_type, description=field.help_text, required=not field.null)
 
     return Dynamic(dynamic_type)
 
@@ -178,13 +178,13 @@ def convert_postgres_array_to_list(field, registry=None):
     base_type = convert_django_field(field.base_field)
     if not isinstance(base_type, (List, NonNull)):
         base_type = type(base_type)
-    return List(base_type, description=field.help_text)
+    return List(base_type, description=field.help_text, required=not field.null)
 
 
 @convert_django_field.register(HStoreField)
 @convert_django_field.register(JSONField)
 def convert_posgres_field_to_string(field, registry=None):
-    return JSONString(description=field.help_text)
+    return JSONString(description=field.help_text, required=not field.null)
 
 
 @convert_django_field.register(RangeField)
@@ -192,4 +192,4 @@ def convert_posgres_range_to_string(field, registry=None):
     inner_type = convert_django_field(field.base_field)
     if not isinstance(inner_type, (List, NonNull)):
         inner_type = type(inner_type)
-    return List(inner_type, description=field.help_text)
+    return List(inner_type, description=field.help_text, required=not field.null)

graphene_django/form_converter.py

@@ -34,13 +34,13 @@ def convert_form_field(field):
 @convert_form_field.register(forms.Field)
 @convert_form_field.register(UUIDField)
 def convert_form_field_to_string(field):
-    return String(description=field.help_text)
+    return String(description=field.help_text, required=field.required)
 
 
 @convert_form_field.register(forms.IntegerField)
 @convert_form_field.register(forms.NumberInput)
 def convert_form_field_to_int(field):
-    return Int(description=field.help_text)
+    return Int(description=field.help_text, required=field.required)
 
 
 @convert_form_field.register(forms.BooleanField)
@@ -56,16 +56,16 @@ def convert_form_field_to_nullboolean(field):
 @convert_form_field.register(forms.DecimalField)
 @convert_form_field.register(forms.FloatField)
 def convert_form_field_to_float(field):
-    return Float(description=field.help_text)
+    return Float(description=field.help_text, required=field.required)
 
 
 @convert_form_field.register(forms.ModelMultipleChoiceField)
 @convert_form_field.register(GlobalIDMultipleChoiceField)
 def convert_form_field_to_list(field):
-    return List(ID)
+    return List(ID, required=field.required)
 
 
 @convert_form_field.register(forms.ModelChoiceField)
 @convert_form_field.register(GlobalIDFormField)
 def convert_form_field_to_id(field):
-    return ID()
+    return ID(required=field.required)

graphene_django/tests/test_converter.py

@@ -226,24 +226,27 @@ def test_should_onetoone_reverse_convert_model():
     assert isinstance(graphene_field, graphene.Dynamic)
     dynamic_field = graphene_field.get_type()
     assert isinstance(dynamic_field, graphene.Field)
-    assert dynamic_field.type == A
+    assert isinstance(dynamic_field.type, graphene.NonNull)
+    assert dynamic_field.of_type.type == A
 
 
 @pytest.mark.skipif(ArrayField is MissingType,
                     reason="ArrayField should exist")
 def test_should_postgres_array_convert_list():
     field = assert_conversion(ArrayField, graphene.List, models.CharField(max_length=100))
-    assert isinstance(field.type, graphene.List)
+    assert isinstance(field.type, graphene.NonNull)
-    assert field.type.of_type == graphene.String
+    assert isinstance(field.type.of_type, graphene.List)
+    assert field.type.of_type.of_type == graphene.String
 
 
 @pytest.mark.skipif(ArrayField is MissingType,
                     reason="ArrayField should exist")
 def test_should_postgres_array_multiple_convert_list():
     field = assert_conversion(ArrayField, graphene.List, ArrayField(models.CharField(max_length=100)))
-    assert isinstance(field.type, graphene.List)
+    assert isinstance(field.type, graphene.NonNull)
     assert isinstance(field.type.of_type, graphene.List)
-    assert field.type.of_type.of_type == graphene.String
+    assert isinstance(field.type.of_type.of_type, graphene.List)
+    assert field.type.of_type.of_type.of_type == graphene.String
 
 
 @pytest.mark.skipif(HStoreField is MissingType,
@@ -263,5 +266,6 @@ def test_should_postgres_json_convert_string():
 def test_should_postgres_range_convert_list():
     from django.contrib.postgres.fields import IntegerRangeField
     field = assert_conversion(IntegerRangeField, graphene.List)
-    assert isinstance(field.type, graphene.List)
+    assert isinstance(field.type, graphene.NonNull)
-    assert field.type.of_type == graphene.Int
+    assert isinstance(field.type.of_type, graphene.List)
+    assert field.type.of_type.of_type == graphene.Int

graphene_django/tests/test_types.py

@@ -63,10 +63,10 @@ schema {
 
 type Article implements Node {
   id: ID!
-  headline: String
+  headline: String!
-  pubDate: DateTime
+  pubDate: DateTime!
-  reporter: Reporter
+  reporter: Reporter!
-  lang: ArticleLang
+  lang: ArticleLang!
   importance: ArticleImportance
 }
 
@@ -104,12 +104,12 @@ type PageInfo {
 }
 
 type Reporter {
-  id: ID
+  id: ID!
-  firstName: String
+  firstName: String!
-  lastName: String
+  lastName: String!
-  email: String
+  email: String!
   pets: [Reporter]
-  aChoice: ReporterA_choice
+  aChoice: ReporterA_choice!
   articles(before: String, after: String, first: Int, last: Int): ArticleConnection
 }