wip create a widget for binaryfield

pulp_container/app/modelresource.py

@@ -13,6 +13,14 @@
 )
 
 
+class BinaryWidget(widgets.Widget):
+    def clean(self, value, row=None, **kwargs):
+        return bytes.fromhex(value)
+
+    def render(self, value, obj=None):
+        return value.hex()
+
+
 class ContainerRepositoryResource(RepositoryResource):
     """
     A resource for importing/exporting repositories of the sync type
@@ -65,6 +73,11 @@ class BlobResource(BaseContentResource):
     Resource for import/export of blob entities
     """
 
+    data = fields.Field(
+        column_name="data",
+        attribute="data",
+        widget=BinaryWidget()
+    )
     def set_up_queryset(self):
         """
         :return: Blobs specific to a specified repo-version.