Try this.
#form
<%form_tag({:action => 'upload_file'},:id=>@student.id,:multipart =>
true) do-%>
<%= file_field :upload, :datafile%>
<%= submit_tag "Upload" %>
<%end%>
#method
def upload_file
data = params[:upload]
orig_fileName = data[:datafile].original_filename
filePath = "#{RAILS_ROOT}/public/data/#{orig_fileName}"
file_data = data[:datafile].read
File.open(filePath,"wb"){ |f| f.write file_data }
end
Thanks
Senling
On Feb 17, 2:18 pm, Michael Pavling <pavl...@gmail.com> wrote:
> On 17 February 2010 05:58, Greg Ma <li...@ruby-forum.com> wrote:
>
> > Hi,
> > I trying to do an upload form, bu the file_field doesnt seem to work as
> > it should. I can't access the datafile properties...
>
> > #form
> > <% form_for @student,
> > :url => { :action => "upload_file",:id=>@student.id }, :multipart =>
> > true do |f|%>
>
> > #Error
> > undefined method `original_name' for "iPhone intro.pdf":String
>
> All the clues are there for you in the error.
> It's saying that the upload[:datafile] field is a String object
> (you're expecting a File).
> So there's a problem with your form sending strings instead of files.
> The thing that does the magic with turning file_fields from being just
> another text input is the multipart value on the form, so that's
> likely to be the problem.
> Low and behold - there's a syntax error in your form definition; it should be
> :
>
> <% form_for @student,
> :url => { :action => "upload_file",:id=>@student.id }, :html => { :multipart
> =>
> true } do |f|%>
>
> (looks like you got a bit crossed between the form_tag and form_for methods)
>
> That should now at least upload the file to the server, and let you
> get on with the rest of the code.
>
> (you'll save another bug hunt if you change :
> upload['datafile'].original_name
> to
> upload['datafile'].original_filename
> ;-)
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