Jeff Pritchard wrote:
> I'm working on an app that includes the feature to allow user to
> download a csv file of their data.
>
> I've got it working on my local machine, but when I deploy it, the link
> I'm making doesn't work for doing the download. The file IS being
> created in the location I'm intending, but the file download only works
> on my local machine and not on the server.
>
> This is probably more correctly an html or unix/linux issue or something
> to do with how I'm constructing my path, but I don't know enough about
> what's wrong to tell for sure.
>
> Here's the relevant code that makes the link:
>
> @temp_download_file_path = "/tmp/#{modified_email}.csv"
> ...
> FasterCSV.open(@temp_download_file_path, "w") do |csv|
> @contacts.each do |one_contact|
> ...csv stuff that is working and not relevant
> end
> end
>
> render :update do |page|
> page.replace_html 'div_for_csv_link', "<a
> href='file:[EMAIL PROTECTED]' target='_blank' >Download the
> file here</a>"
> end
>
>
> The resulting link looks like this when you copy it or hover over it:
>
> file:///tmp/fred_at_creditcards_and_loans_com.csv
>
> Do I need to put the file in a different place in order for the
> permissions to work? Should it be file: or http:// before the file
> name.
>
> Thanks for your help on this. You never really realize how incredibly
> diverse the knowledge you need for developing something until you dig
> into something like this that sounds simple, but is slightly outside the
> realm of what you've done before.
>
> thanks,
> jp
A link with file:// will only work if the file is on the current
machine. For example:
file:///mypath/myfile
will download a file from /mypath/myfile *on the local machine* if it
exists.
What you are probably wanting is to create the file in a temporary
directory as you have done, but then serve it up with a proper link.
You might want to look at send_file or send_data to read the contents
from the file and directly send it to the users browser. you will have
to put this inside another action.
HTH
Matt
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