Hi there,
I’ve been digging around trying to find some information (mostly
examples)
on how one would handle a progress bar upload using BackgrounDRb and
File
Column. I did read http://backgroundrb.rubyforge.org/ and Ezra’s blog of
course, but I still have a few questions.
I made a simple upload form (as a test) that is submitted to the
“upload_song” action.
def upload_song
@song = Song.new(params[:song])
@song.member_id = session[:member_id]
@song.save
redirect_to :action => ‘edit_songs’
end
The question is, do I create the session[:job_key] within this method
like
so: ??
def upload_song
session[:job_key] = MiddleMan.new_worker(:class => :upload_worker,
:args
=> “Uploading song…”)
@song = Song.new(params[:song])
@song.member_id = session[:member_id]
@song.save
redirect_to :action => ‘edit_songs’
end
In my view, within the form parameters I have: <%=
periodically_call_remote(:url => {:action => ‘get_progress’}, :frequency
=>
- %> which calls the below method:
def get_progress
if request.xhr?
progress_percent =
MiddleMan.get_worker(session[:job_key]).progress
render :update do |page|
page.call(‘progressPercent’, ‘progressbar’, progress_percent)
page.redirect_to( :action => ‘done’) if progress_percent >=
100
end
else
redirect_to :action => ‘index’
end
end
def done
MiddleMan.delete_worker(session[:job_key])
redirect_to :action => ‘edit_songs’
end
Just for clarity sake, here’s my upload_worker class:
class UploadWorker < BackgrounDRb::Rails
attr_reader :progress
def do_work(args)
@progress = 0
start_working
end
def start_working
Thread.new do
while @progress < 100
sleep rand / 2
a = [1,3,5,7]
@progress += a[rand(a.length-1)]
if @progress > 100
@progress = 100
end
end
end
end
def progress
puts “Rails is fetching progress: #{@progress}”
Integer(@progress)
end
end
Are there any good tutorials out there that walk through the
implementation
of backgroundrb (specifically covering file uploads)? Am I close to
getting
this thing to work?
Thank you,
Dave H.
There is a file upload