Meteor FS.Collection access collection on server - node.js

Question

I'm using FS.Collection to upload short video file on a server and then send it as an attachment in email.
Inserting to the collection on server works and I can access collection items on the client, also, stream it directly with a path to the file Url - localhost:3000/cfs/files/videos/{{item_id}}
I wonder how to access collection on the server. I want to send an email with attachment in the following form and need to access path to file and filename on the server. I tried doing:
Email.send({
to: to,
from: from,
subject: subject,
text: text,
attachments:[{fileName:"video.mp4", filePath:"/cfs/files/videos/{{item_id}}"}]
});
It displays the attachment video player in the email, but with an error message, so I assume I'm not accessing a file correctly.
My Collection.js is simple:
var videoStore = new FS.Store.GridFS("videos");
Videos = new FS.Collection("videos", {
stores: [videoStore]
});

Answer 1

You can not use attachment by filePath of collectionFS. "/cfs/files/videos/{{item_id}}" is a virtual path, i.e. files don't exist in /cfs/files/videos, neither there is folder '/cfs/files/videos'.
You can use http path instead:
var ROOT_URL = process.env.ROOT_URL;
var rootUrl;
if (ROOT_URL.indexOf('/', ROOT_URL.length - 1) != -1) {
rootUrl = ROOT_URL.substring(0, ROOT_URL.length - 1);
} else {
rootUrl = ROOT_URL;
}
var attachments = [];
attachment = {
fileName: fileName(url),
filePath: rootUrl + "/cfs/files/videos/{{item_id}}"
};
attachments.push(attachment);
Email.send({
to: to,
from: from,
subject: subject,
text: text,
attachments: attachments
});