Dynamically generate preview links using the Ruby SDK
I've looked through the SDK docs and searched on community.box.com without finding any details.
The Ruby code to generate a preview link looks like this:
link_to 'View File', client.preview_link(client.file_from_path(filePath)) + '?showDownload=true'
But these links are only good for a short period and there’s high processing time to generate each link, which makes the page load slowly. Are there any examples or suggestions as to how I can dynamically generate these links when needed?
Thank you
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You can call the embed_url method from our Ruby SDK to generate a file preview link. This method takes a Box file id as the parameter and returns back a file preview link.
preview_link = embed_url(file)
You can preview the file by accessing the link directly or embedding the link into an iFrame.
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Hello Murtza, thank you for that. The embed_url() method does seem to draw the page quicker than the two I was using. But my issue remains that with approximately 40 files per page, drawing preview and download links for each takes a bit of time.
Also the links expire after a short period. To dynamically generate the link my approach is to use a jQuery click event, passing the file ID to that function. Then have that function call a Ruby function that will return the result from the embed_url() method.
Here's the code I have so far:
#Java function
html += ''
#html body
html_list += 'Preview'#Ruby function
def filePreview(fileID)
link = client.embed_url(fileID))
return link
end
I believe I'd need to use ajax to call the Ruby function from javascript. Any suggestions/examples or a better approach would be much appreciated.Thank you
Jeff -
Your approach of generating the file preview links asynchronously makes sense. As you noted, you can use Ajax to communicate between the browser/client and the server. On the server, you can use embed_url method to request the file preview link from our API. Then you can pass the file preview link back to the browser.
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