Add NamedBlobFile support.

src/plone/restapi/adapter.py

@@ -10,6 +10,7 @@
 from plone.app.contenttypes.interfaces import ICollection
 from plone.app.contenttypes.interfaces import IFile
 from plone.app.contenttypes.interfaces import IImage
+from plone.namedfile.file import NamedBlobFile
 from plone.namedfile.file import NamedBlobImage
 from plone.restapi.utils import append_json_to_links
 from plone.restapi.utils import get_object_schema
@@ -118,6 +119,12 @@ def SerializeToJson(context):
                     context.absolute_url(),
                     value.filename
                 )
+            # File
+            elif isinstance(value, NamedBlobFile):
+                result[title] = '{0}/{1}'.format(
+                    context.absolute_url(),
+                    value.filename
+                )
             else:
                 result[title] = str(value)
     if getattr(context, 'request', False):

src/plone/restapi/tests/test_adapter_file.py

@@ -0,0 +1,56 @@
+# -*- coding: utf-8 -*-
+import unittest2 as unittest
+
+from plone.dexterity.interfaces import IDexterityContent
+from plone.dexterity.fti import DexterityFTI
+from plone.namedfile.field import NamedBlobFile as NamedBlobFileInterface
+from plone.namedfile.file import NamedBlobFile
+
+from plone.restapi.testing import \
+    PLONE_RESTAPI_INTEGRATION_TESTING
+from plone.restapi.interfaces import ISerializeToJson
+
+from Products.CMFCore.utils import getToolByName
+
+import json
+import os
+
+
+class IFileDocument(IDexterityContent):
+
+    file = NamedBlobFileInterface(
+        title=u"Please upload a file",
+        required=False,
+    )
+
+
+class TestSerializeToJsonAdapter(unittest.TestCase):
+
+    layer = PLONE_RESTAPI_INTEGRATION_TESTING
+
+    def setUp(self):
+        self.app = self.layer['app']
+        self.portal = self.layer['portal']
+        self.portal_url = self.portal.absolute_url()
+        fti = DexterityFTI('FileDocument')
+        fti._updateProperty(
+            'schema',
+            'plone.restapi.tests.test_adapter_file.'
+            'IFileDocument'
+        )
+        types_tool = getToolByName(self.portal, "portal_types")
+        types_tool._setObject('FileDocument', fti)
+
+    def test_file_adapter(self):
+        self.portal.invokeFactory('FileDocument', 'filedoc1')
+        file_file = os.path.join(os.path.dirname(__file__), u'file.pdf')
+        self.portal.filedoc1.file = NamedBlobFile(
+            data=open(file_file, 'r').read(),
+            contentType='application/pdf',
+            filename=u'file.pdf'
+        )
+
+        self.assertEqual(
+            u'http://nohost/plone/filedoc1/file.pdf',
+            json.loads(ISerializeToJson(self.portal.filedoc1)).get('file')
+        )