Merge pull request #53 from crunk1/master

Fix: #49 All fields were being set as non-nullable. Allow nullable filter.

.gitignore

@@ -1,6 +1,7 @@
 .coverage
 .cache/
 .eggs/
+.idea/
 _build/
 build/
 dist/

graphene_mongo/converter.py

@@ -21,41 +21,41 @@ def convert_mongoengine_field(field, registry=None):
 @convert_mongoengine_field.register(mongoengine.StringField)
 @convert_mongoengine_field.register(mongoengine.URLField)
 def convert_field_to_string(field, registry=None):
-    return String(description=field.db_field, required=not field.null)
+    return String(description=field.db_field, required=field.required)
 
 
 @convert_mongoengine_field.register(mongoengine.UUIDField)
 @convert_mongoengine_field.register(mongoengine.ObjectIdField)
 def convert_field_to_id(field, registry=None):
-    return ID(description=field.db_field, required=not field.null)
+    return ID(description=field.db_field, required=field.required)
 
 
 @convert_mongoengine_field.register(mongoengine.IntField)
 @convert_mongoengine_field.register(mongoengine.LongField)
 def convert_field_to_int(field, registry=None):
-    return Int(description=field.db_field, required=not field.null)
+    return Int(description=field.db_field, required=field.required)
 
 
 @convert_mongoengine_field.register(mongoengine.BooleanField)
 def convert_field_to_boolean(field, registry=None):
-    return Boolean(description=field.db_field, required=not field.null)
+    return Boolean(description=field.db_field, required=field.required)
 
 
 @convert_mongoengine_field.register(mongoengine.DecimalField)
 @convert_mongoengine_field.register(mongoengine.FloatField)
 def convert_field_to_float(field, registry=None):
-    return Float(description=field.db_field, required=not field.null)
+    return Float(description=field.db_field, required=field.required)
 
 
 @convert_mongoengine_field.register(mongoengine.DictField)
 @convert_mongoengine_field.register(mongoengine.MapField)
 def convert_dict_to_jsonstring(field, registry=None):
-    return JSONString(description=field.db_field, required=not field.null)
+    return JSONString(description=field.db_field, required=field.required)
 
 
 @convert_mongoengine_field.register(mongoengine.DateTimeField)
 def convert_date_to_string(field, registry=None):
-    return String(description=field.db_field, required=not field.null)
+    return String(description=field.db_field, required=field.required)
 
 
 @convert_mongoengine_field.register(mongoengine.ListField)
@@ -77,7 +77,7 @@ def convert_field_to_list(field, registry=None):
             and not isinstance(field.field, relations):
         base_type = type(base_type)
 
-    return List(base_type, description=field.db_field, required=not field.null)
+    return List(base_type, description=field.db_field, required=field.required)
 
 
 @convert_mongoengine_field.register(mongoengine.EmbeddedDocumentField)

graphene_mongo/fields.py

@@ -9,6 +9,8 @@
 from graphql_relay.connection.arrayconnection import connection_from_list_slice
 from graphql_relay.node.node import from_global_id
 from graphene.types.argument import to_arguments
+from graphene.types.dynamic import Dynamic
+from graphene.types.structures import Structure
 
 from .utils import get_model_reference_fields
 
@@ -72,15 +74,16 @@ def args(self, args):
 
     @property
     def field_args(self):
-        def is_filterable(kv):
-            return hasattr(kv[1], '_type') \
-                and callable(getattr(kv[1]._type, '_of_type', None))
-
-        return reduce(
-            lambda r, kv: r.update(
-                {kv[0]: kv[1]._type._of_type()}) or r if is_filterable(kv) else r,
-            self.fields.items(), {}
-        )
+        def is_filterable(v):
+            return not isinstance(v, (ConnectionField, Dynamic))
+
+        def get_type(v):
+            if isinstance(v.type, Structure):
+                return v.type.of_type()
+            return v.type()
+
+        return {k: get_type(v) for k, v in self.fields.items()
+                if is_filterable(v)}
 
     @property
     def reference_args(self):