Make compatible with Marshmallow >= 3.0.0b7 (#77)

* Make compatible with Marshmallow >= 3.0.0b7

Marshmallow has changed the return value of schema.dump(), as per the note in
the API docs:

    http://marshmallow.readthedocs.io/en/latest/api_reference.html#marshmallow.Schema.dump

"Changed in version 3.0.0b7: This method returns the serialized data rather than
a (data, errors) duple. A ValidationError is raised if obj is invalid."

This change just checks the return value of dump().  If it's a dict, it returns
that as output, otherwise, it returns the .data attribute as before.

* Check Marshamllow version number instead of return type.

* Define MARSHMALLOW_VERSION_INFO properly.

* Result of dump() is a dict, not an object.

* Revert "Result of dump() is a dict, not an object."

This reverts commit b5de8df.

* Remove request=flask.request.

* Use resolve_schema instead of resolve_instance.

* Remove "strict", which is no longer present as of Marshamllow >= 3

Author: tonycpsu

flask_apispec/wrapper.py

@@ -9,6 +9,12 @@
 
 from flask_apispec import utils
 
+import marshmallow as ma
+
+MARSHMALLOW_VERSION_INFO = tuple(
+    [int(part) for part in ma.__version__.split('.') if part.isdigit()]
+)
+
 class Wrapper(object):
     """Apply annotations to a view function.
 
@@ -49,7 +55,8 @@ def marshal_result(self, unpacked, status_code):
         schema = schemas.get(status_code, schemas.get('default'))
         if schema and annotation.apply is not False:
             schema = utils.resolve_schema(schema['schema'], request=flask.request)
-            output = schema.dump(unpacked[0]).data
+            dumped = schema.dump(unpacked[0])
+            output = dumped.data if MARSHMALLOW_VERSION_INFO[0] < 3 else dumped
         else:
             output = unpacked[0]
         return format_output((format_response(output), ) + unpacked[1:])

tests/test_views.py

@@ -23,9 +23,6 @@ def test_use_kwargs_schema(self, app, client):
         class ArgSchema(Schema):
             name = fields.Str()
 
-            class Meta:
-                strict = True
-
         @app.route('/')
         @use_kwargs(ArgSchema)
         def view(**kwargs):
@@ -62,9 +59,6 @@ def schema_factory(request):
             class ArgSchema(Schema):
                 name = fields.Str()
 
-                class Meta:
-                    strict = True
-
             return ArgSchema
 
         @app.route('/')