Attachment Blob Not Uploading File

Question

I have a field on a template using the "Attachment" type. There's only 1 attachment field on the template and it's named "Blob" (I read that these were requirements of that field type). The upload worked great in 8.1. We recently upgraded to 8.2. Now when I click "Attach" it lets me select a file and it appears to upload but then I get a prompt to "Save" the file. It renames the file to the name of the Sitcore item but it is the file I just uploaded and nothing has been uploaded to the field.

This has been attempted in Chrome, Edge, FF and IE11 in multiple environments with the same result.

Answer 1

It looks like in Sitecore 8.2, you now need an "Extension" field for Sitecore to understand the attachment type properly.

Add a single-line text field called "Extension" to your template, alongside the blob field. Make sure it has the same specs as the blob field (unversioned or shared).

Once this field is in place, Sitecore will properly fill it out for files you attach. As a bonus, Sitecore will now render the file preview properly for known types.

To fix existing attachments, I can see three possible solutions:

• Put together a script to fill out the Extension field. Presumably you are saving the file name in addition to the blob, so this should be possible.
• If you know what extension to expect, you could set it using standard values.
• Re-attach existing attachments.

For the new Publishing Service to publish your blob fields, see this answer: https://sitecore.stackexchange.com/a/999/890