Download image in rails with javascript/jquery

Rails
1

in my rails app, i have got one URL *
(http://chart.apis.google.com/chart?cht=qr&chs=300x300&chl=code&chld=H|0)*in
Javascript

view.html.erb
*
*
*

<%= link_to "QR","#", :onclick => "showCode();"%>

I need to download this image via click this Save button, I have use
this
way, But it will prompt one window, not downloading
Is there any way to do this?

Thank you
vishnu

2

On Jul 26, 2012, at 2:24 AM, amruby wrote:

imageURL =
“http://chart.apis.google.com/chart?cht=qr&chs=300x300&chl=code&chld=H|0”;
$(“#qr”).html(“Save”);
}

I need to download this image via click this Save button, I have use this way,
But it will prompt one window, not downloading
Is there any way to do this?

If you want a link to download a file from JavaScript, handle the
onclick event and return a full page redirect to the file. It won’t
actually navigate the page to the new URL unless the URL is something
that a browser can actually show (the file will just download). You
mention an image – you will probably need to set Rails to send this
file as an attachment, since the browser will believe that it can handle
an image. Some browsers are unwilling to be led, though, and you will
still show the image. In that case, I find that Zipping the file is a
great way to force the issue.

Walter