Exposed filter for file field

Question

I have a content type with several file fields. I have a view listing nodes of that content type. Now I want to add an exposed filters for each file field to let users filter only those nodes which have a file attached to corresponding field (or not have, whatever they choose).

So, I see choice options like this:

• Any
• Has file attached
• No file attached

Is there a module for this? Or my only way is to write a custom Views filter?

Answer 1

Answering to myself :]

Add a new filter for, say, field_file:fid, make it exposed and choose Is not empty operator.

It will not work :D It is a known Views issue. Luckily, comment #70 in that issue has a patch to fix this operator behavior, apply it and enjoy :)

Answer 2

I was able to work around it using Grouped filters.

I added Content File:fid filter and exposed it.

Then I selected Grouped filters option (instead of the Single filter).

In the table that appears where you can set your options, the first one is Any (default), in the second one I added

Label YES
Operator Is greater than 
Value 0

and I removed the third table row as I didn't need it.

This filter works! It shows the filter with 2 options: Any and YES. Any is default and shows all results. If I select YES it only shows results that have a file attached :)

I also added Content: file among Fields so it's easy to test the filter.

Answer 3

My approach for this was based on experimentation on previous answer by prkos

My case included a image field with images uploaded to my site. So the file-path output for the field was - http://example.com/sites/default/files/001.png

In the views exposed filter, I have used File: Path (grouped) after adding relationship for file.

Now for the grouped options

- Any -
Yes | Operator: Length is greater than | Value: 0
No  | Operator: is empty (Null)        | Value: NULL

This works for me. This gives me a filter for whether an image field is empty or not.