-
-
Notifications
You must be signed in to change notification settings - Fork 132
Unknown Progress
Jeff Felchner edited this page Jul 13, 2016
·
2 revisions
Sometimes when processing work, you don't know exactly how many items you will need to process. This might be because you're downloading a chunked file or because you're processing a set of jobs that hasn't been fully loaded yet.
In times like these, you can set total to nil
and continue to increment the bar as usual. The bar will display an 'unknown' animation which will change every time you increment. This will give the appearance (by default) that the bar is processing work even though there is no "progress".
progressbar = ProgressBar.create(:starting_at => 20, :total => nil)
Will output:
Progress: |=---=---=---=---=---=---=---=---=---=---=---=---=---=---=---=---=---|
Calling
progressbar.increment
once more will output:
Progress: |-=---=---=---=---=---=---=---=---=---=---=---=---=---=---=---=---=--|
ad infinitum.
At whatever point you discover the total that you will be processing, you can call:
progressbar.total = 100
And the bar will magically transform into its typical state:
Progress: |======== |