meteor - cfs:s3 how to get url after upload? -

i cannot understand how cfs:s3 work. on client have

images = new fs.store.s3('images')  @images = new fs.collection "allimages",   stores: [images]   filter:     allow:       contenttypes: ['image/*'] 

on server same keys. , change event

"change .file-image": (e) ->     console.log("changed!")     fs.utility.eachfile e, (file) ->       images.insert file, (err,fileobj) ->         console.log 'fileobj',fileobj 

and after cannot understand do, how upload , url?

when create cfs object you'll typically want retain _id, example:

let imageid = images.insert file 

or

images.insert file, (err,fileobj) ->     let imageid = fileobj._id 

cfs might take awhile finish loading file , url isn't available until upload finished.

let url = fileobj.isuploaded() ? fileobj.url() : null 

in blaze might like:

{{#if this.isuploaded}}   <a href="{{this.url}}">download file</a> {{else}}   {{> progress}} {{/if}} 

finally, cfs project getting less attention may wish switch edgee:slingshot