"save to hard disk ..." from client browser

[cflis]

I need to write a page with many liks to files.
When user click to links "Save..." dialog box must
be shown to user
in case .zip or .exe files - this work,
but when I click on link to .jpg or .gif or other graphics files browser show this file
what can I do in order to enable "save to hard disk ..." dialog box when user click on link to file which have any extension ???

 

[GunJack]

I don't believe there is any reliable way to do this. The reason the browser gives the user a "save-as" dialog is because a link points to a file it doesn't understand. When you link to any type of file it can display or display with a plug-in, it will show the file and not give the visitor the option. There may be some new tag that allows this but I don't think you'll find one that works across all browsers reliably. I think you would be better off giving instructions such as "In Netscape, right click and choose save or in IE...".

GJ

 

[Janoh]

<cfcontent> will solve the problem. Build a hidden frame or something and in Javascript address the jpeg in the hidden frame with cfcontent. It will work.

 

[pcorreia]

Yes, <cfcontent> is the way to go. Change the download link on your page from href=&quot;files/myjpegfile.jpg&quot; to &quot;files/download.cfm?filename=myjpegfile.jpg&quot;. Then, write download.cfm like this:

<cfif IsDefined(&quot;URL.filename&quot;)>

   <cfscript>
      // Known MIME Content-Types
      mimeTypes = StructNew();
      mimeTypes[&quot;jpg&quot;] = &quot;image/jpeg&quot;;
      mimeTypes[&quot;gif&quot;] = &quot;image/gif&quot;;
      mimeTypes[&quot;zip&quot;] = &quot;application/zip&quot;;
      mimeTypes[&quot;exe&quot;] = &quot;application/octet-stream&quot;;

      // Get the extension of the file specified
      fileExt = ListLast(URL.filename,&quot;.&quot;);
   </cfscript>

   <!--- Do we know the MIME type for this file? --->
   <cfif ListFind(StructKeyList(mimeTypes),fileExt)>
      <cftry>
         <!--- Send the MIME type and file contents --->
         <cfcontent 
             type=&quot;#mimeTypes[fileExt]#&quot;
             file=&quot;#URL.filename#&quot;
             reset=&quot;YES&quot;>
         <!--- Download the file instead of displaying it inline --->
         <cfheader
             name=&quot;Content-Disposition&quot;
             value=&quot;attachment;filename=#URL.filename#&quot;>
         <cfset fileWasSent = &quot;YES&quot;>
         <cfcatch>
            <cfset fileWasSent = &quot;NO&quot;>
         </cfcatch>
      </cftry>
   <cfelse>
      <cfset fileWasSent = &quot;NO&quot;>
   </cfif>
<cfelse>
   <cfset fileWasSent = &quot;NO&quot;>
</cfif>

<!--- If we couldn't send the file, send a 404 instead --->
<cfif NOT fileWasSent>
   <cfheader
       statuscode=&quot;404&quot;
       statustext=&quot;File Not Found&quot;>
</cfif>

You'll need to expand the list of MIME types to include all the files you'll be offering for download. It might be easier to store them in a database. Also, you should implement some security to control what the user can download -- we put all the files we're offerring for download in a database; then, download.cfm accepts not a filename as a parameter, but an ID value for the file.