How to serve a file using iron router or meteor itself?

by

On the server:

var fs = Npm.require('fs');

var fail = function(response) {
  response.statusCode = 404;
  response.end();
};

var dataFile = function() {
  // TODO write a function to translate the id into a file path
  var file = fileFromId(this.params.id);

  // Attempt to read the file size
  var stat = null;
  try {
    stat = fs.statSync(file);
  } catch (_error) {
    return fail(this.response);
  }

  // The hard-coded attachment filename
  var attachmentFilename="filename-for-user.zip";

  // Set the headers
  this.response.writeHead(200, {
    'Content-Type': 'application/zip',
    'Content-Disposition': 'attachment; filename=" + attachmentFilename
    "Content-Length': stat.size
  });

  // Pipe the file contents to the response
  fs.createReadStream(file).pipe(this.response);
};

Router.route('/data/:id', dataFile, {where: 'server'});

On the client:

<a href="https://stackoverflow.com/data/123">download zip</a>

The nice part about this is that it will download the file as an attachment, and you can customize the filename that the user sees. The trick is writing the fileFromId function. I find it’s easiest to store all of my dynamically generated files under /tmp.

This answer assumes that the files are being generated dynamically. If you want to serve static content, you can just put your files under the public directory. See this question for more details.

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