Display BLOBS

Question

I am trying to display BLOBS in HTMLDB using Report. I am not able to display images, PDF or Docs.
I am using the following procedure DISPLAY_IMAGE
create or replace procedure "DISPLAY_IMAGE"
(p_image_id IN NUMBER)
is
l_mime varchar2(255);                
l_length number;
l_file_name varchar2(2000);
lob_loc BLOB;
begin
select mime_type,image_data, file_name, dbms_lob.getlength(image_data)
into l_mime, lob_loc, l_file_name, l_length
from image_table where image_id = p_image_id;
                                   owa_util.mime_header(nvl(l_mime,'application/octet'), FALSE );      
htp.p('Content-length: ' || l_length);
htp.p('Content-Disposition: filename="' || l_file_name || '"');
owa_util.http_header_close;
wpg_docload.download_file( Lob_loc );
end;
I tried building with the following region source in the Report
select
'<iframe src="#OWNER#.display_image?p_image_id=&i.image_id." width=300> </iframe>' img, image_id, file_name, mime_type from image_table i
Any ideas???

Answer 1

Does accessing #OWNER#.display_image?p_image_id=&i.image_id. directly via your browser work if you replace &image_id. and #OWNER# with valid values (i.e. is a popup window displayed asking you to save or open the file)? If this works then...
The HTTP header output by the following line tells a browser to popup the "Save to disk" dialog.
htp.p('Content-Disposition: filename="' || l_file_name || '"');
If you are wanting to just display the content of the file (e.g. image, pdf etc.) in the browser you will want to remove that line.
[ BTW, I am not sure if you can set the src attribute of the IFRAME tag to be an image. PDFs should work though I think ]