Rails - Jan 2008 - respond to REST-request with image-file (no XML etc.)

Hi!

I''m using REST to serve content (images and SWFs) to a flash-file.
Depending on the IP of the user, I would like to serve different
content. To get the IP I use ''request.remote_ip, followed by an if
statement to return the correct content.

What I don''t know is how do I serve just the content (no XML, just
content.jpg) as a reply from my Rails-controller? The content is not
stored in a database, but in my public directory.

  def show

    ip = request.remote_ip

    if ip=x
      return ''/content/hello.jpg''
    else
      return ''/content/goodbye.jpg''
    end

    respond_to do |format|
      format.html # bbprivat.html.erb
      format.xml  { render :xml => @ip }
    end

  end

Many thanks for all the help I can get!
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Hi Gustav,

you can use the send_file command to return binary data to the client

e.g.
respond_to do |format|
format.html { ip == x ? send_file ''/content/hello.jpg'',
:filename =>
''hello.jpg'' : send_file
''/content/goodbye.jpg'', :filename =>
''goodbye.jpg'' }
end

think that will work , you might want to register a new content type
for the respond_to block so it ''responds_to'' .jpg as well.

Gustav Stockholm wrote:
> Hi!
>
> I''m using REST to serve content (images and SWFs) to a flash-file.
> Depending on the IP of the user, I would like to serve different
> content. To get the IP I use ''request.remote_ip, followed by an if
> statement to return the correct content.
>
> What I don''t know is how do I serve just the content (no XML, just
> content.jpg) as a reply from my Rails-controller? The content i      s not
> stored in a database, but in my public directory.
>
>   def show
>
>     ip = request.remote_ip
>
>     if ip=x
>       return ''/content/hello.jpg''
>     else
>       return ''/content/goodbye.jpg''
>     end
>
>     respond_to do |format|
>       format.html # bbprivat.html.erb
>       format.xml  { render :xml => @ip }
>     end
>
>   end
>
> Many thanks for all the help I can get!
> --
> Posted via http://www.ruby-forum.com/.
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> respond_to do |format|
> format.html { ip == x ? send_file ''/content/hello.jpg'',
:filename =>
> ''hello.jpg'' : send_file
''/content/goodbye.jpg'', :filename =>
> ''goodbye.jpg'' }
> end
I''ve tried:

def show
  ip = request.remote_ip
  pattern = x

  if pattern.match(ip)
    @file = ''/folder/y.swf''
  else
    @file = ''/folder/x.swf''
  end

  respond_to do |format|
    format.html { send_file @file }
  end
end

This returns a returns a "Cannot read file /folder/y.swf" error
message.

I''ve also tried:

respond_to do |format|
  format.html { render :file => @file }
end

This returns a "No such file or directory - /folder/y.swf", although 
"http://localhost:3000/folder/y.swf" works just fine.

When substituting the @file-construct for:

format.html { send_file ''/folder/y.swf'', :filename =>
''y.swf'' }

but get the same result...
> think that will work , you might want to register a new content type
> for the respond_to block so it ''responds_to'' .jpg as
well.
Where do I register new content types in the respond_to-block? I''m a 
REST-noob, in case that wasn''t obvious ;)

Many thanks!

g.
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> This returns a returns a "Cannot read file /folder/y.swf" error
message.
I solved it by using the full system-file path:

render :file =>
''/Users/gustav/Sites/sandbox/public/folder/y.swf''

Anyone know how make Rails understand to use the public-folder as root?

Also, since I get plenty of weird characters on screen, rather than the 
actual swf-file, I suppose I need to register swf to work with the 
respond_to block.

send_file ''/Users/gustav/Sites/sandbox/public/folder/y.swf''

works just as good for that matter, although I get prompted to save file 
to disk.
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