Thanks ! :)
Your solution is much DRY then my :) :
{img.contentType.toString.isEmpty match {
case true => "application/
octet-stream"
case false =>
img.contentType.is.toString}}
Best regards,
On 26 Lis, 15:10, Jeppe Nejsum Madsen <je...@ingolfs.dk> wrote:
> Marcin Jurczuk <mjurc...@gmail.com> writes:
> > Thanks .. read that ...and look and dmap implementation however it
> > doesn't work like I expected:
>
> > scala> r.dmap("application/octet-stream")(_.contentType.is)
> > res49: java.lang.String = null
>
> This is (probably) because contentType is null. The dmap only opens the
> Box returned from the query. This will be empty if the query fails.
>
> Now you have the result of the query, but the result can still contain a
> null value for the field contentType, so you need something like this:
>
> r.dmap("application/octet-stream")(b => if (b.contentType.is == null)
> "application/octet-stream" else b.contentType.is)
>
> or, to be more DRY
>
> r.flatMap(b => Box !! b.contentType.is) openOr "application/octet-stream"
>
> Basically, unpack the query result and put the contenType in a new box,
> unpack everything or return the default :-)
>
> /Jeppe
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