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    1.0.2 • Public • Published


    A multer storage engine for flydrive's fluent storage interface

    The flydrive storage engine gives you full control on storing files to whatever backing storage service you choose to configure through flydrive.

    var storage = new StorageManager({
      disks: {
        local: {
          driver: 'local',
          root: process.cwd(),
        s3: {
          driver: 's3',
          key: 'AWS_S3_KEY',
          secret: 'AWS_S3_SECRET',
          region: 'AWS_S3_REGION',
          bucket: 'AWS_S3_BUCKET',
    var storageEngine = FlydriveStorageEngine({
      async disk (req, file) {
        return req.query.dest === 's3' ? storage.disk('s3') : storage.disk('local');
      async destination (req, file) {
        return '/tmp/my-uploads';
      async filename (req, file, cb) {
        return file.fieldname + '-' +;
    var upload = multer({ storage: storageEngine });

    The disk attribute is required, and there are two options available,destination and filename. They are all functions that determine where the file should be stored.

    disk is used to determine which flydrive disk on which to store the file. This can also be given as a single flydrive storage disk (e.g. storage.disk()).

    destination is used to determine within which folder the uploaded files should be stored. This can also be given as a string (e.g. '/tmp/uploads'). If no destination is given, the disk's configured root directory is used. Since the underlying engine is flydrive, you do not need to worry about directory creation, flydrive will handle this for you.

    filename is used to determine what the file should be named inside the folder. If no filename is given, each file will be given a random name that doesn't include any file extension.

    Note: Multer will not append any file extension for you, your function should return a filename complete with an file extension.

    Each function gets passed both the request (req) and some information about the file (file) to aid with the decision.

    Note that req.body might not have been fully populated yet. It depends on the order that the client transmits fields and files to the server.


    npm i multer-flydrive-engine

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    • pdspicer