[play 1.2.4][gae 1.6.0][crudsiena 2.0.3] How to save Blob in GAE with CrudSiena

[Oleksandr Bezhan]

Hi guys. How to save images to GAE BlobStore with CrudSiena ? What
type should I use ?
The only type which CrudSiena renders as field in admin panel CRUD
form is byte[] but AFAIK GAE required GAE Blob type to be saved in
BlobStore.
How to make CrudSiena render CRUD field for type GAE Blob ?

[Pascal Voitot Dev]

normally, siena knows how to serialize a byte[] into a GAE Blob.
The problem is on play-siena/play-crud-siena side.
I made crudsiena represent a byte[] as a file so that you could use image files.
But apparently something fails while saving the data.

I don't have time right now to investigate this problem. Did you succeed to find the exact place where the data is lost?

Thanks
Pascal

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[Oleksandr Bezhan]

I found that byte[] param is lost while binding params(SienaPlugin
doesn't bind it correctly, but creates an empty byte[] array).
I suppose we need to create own binder.

[Pascal Voitot Dev]

is it siena plugin or is it play default binding mechanism?
(just to know if it's an error in sienaplugin)

Pascal

[Oleksandr Bezhan]

I cannot say exactly where is the error cause I don't know how all
these things should work.
I see that Play creates empty bean and SienaPlugin don't put byte[]
param in it in method bind().