write.md

write(buffer [, opts, callback, proceedAfterUpload]) [Server]

Write Buffer to FS and add record to Files collection. This function is asynchronous.

• buffer {Buffer} - File data as Buffer
• opts {Object} - Recommended properties:
  • opts.fileName {String} - File name with extension, like name.ext
  • opts.type {String} - Mime-type, like image/png
  • opts.size {Number} - File size in bytes, if not set file size will be calculated from Buffer
  • opts.meta {Object} - Object with custom meta-data
  • opts.userId {String} - UserId, default null
  • opts.fileId {String} - id, optional - if not set - Random.id() will be used
• callback {Function} - Triggered after file is written to FS. With error, and fileRef, where fileRef is a new record from DB
• proceedAfterUpload {Boolean} - Proceed onAfterUpload hook (if defined) after Buffer is written to FS
• Returns {Files} - Current FilesCollection instance

import fs from 'fs';
import { FilesCollection } from 'meteor/ostrio:files';

const imagesCollection = new FilesCollection({collectionName: 'images'});

fs.readFile('/data/imgs/sample.png', (error, data) => {
  if (error) {
    throw error;
  } else {
    imagesCollection.write(data, {
      fileName: 'sample.png',
      fileId: 'abc123myId', //optional
      type: 'image/png'
    }, (writeError, fileRef) => {
      if (writeError) {
        throw writeError;
      } else {
        console.log(`${fileRef.name} is successfully saved to FS. _id: ${fileRef._id}`);
      }
    });
  }
});