Buffer on server how to use.

[NaderIkladious]

Error: DataMan constructor requires a type argument when passed a Uint8Array

Meteor.methods({
    'saveFile': function(buffer){
      return Images.insert(buffer);
    }
});

var imageId;
if( !!event.target.file.value ) {
      var image = event.target.file.files[0];

      var reader = new FileReader(); //create a reader according to HTML5 File API

      reader.onload = function(event){
        var buffer = new Uint8Array(reader.result) // convert to binary
        Meteor.call('saveFile', buffer, function(id) {
          imageId = id;
        });
      };

      reader.readAsArrayBuffer(image); //read the file as arraybuffer
    }

[beeekind]

Currently dealing with the same problem, any solutions?

[nooitaf]

Buffer is Server-Only.

Also method-calls use DDP and thats much slower then HTTP which gets used if you insert on the client.

---

https://github.com/CollectionFS/Meteor-CollectionFS#initiate-the-upload

The insert method can directly accept a variety of different file representations as its first argument:

• File object (client only)
• Blob object (client only)
• Uint8Array
• ArrayBuffer
• Buffer (server only)
• A full URL that begins with "http:" or "https:"
• A local filepath (server only)
• A data URI string

[nooitaf]

Hmm, on second view, you are using Uint8Array which is labeled as "both" so you might just have to add a type somehow.. (might have to do some more digging here)

Also the Meteor.call callback always returns (error, result)

A suggestion in https://github.com/CollectionFS/Meteor-CollectionFS/issues/367 is to use base64.

[johhansantana]

I can't seem to get this to work :(

client side

import axios from 'axios';

const url = "http://localhost:3000/methods/insertImage";

export default function upload(file: File) {
  if (!file) return;

  let reader = new FileReader(); //create a reader according to HTML5 File API

  reader.onload = function(event){
    let buffer = new Uint8Array(reader.result); // convert to binary
    console.log('buffer: ', buffer);
    axios.post(url, buffer);
  };

}

meteor server side

Meteor.methods({
  insertImage: (file) => {
    const fsFile = new FS.File(file);
    Images.insert(fsFile, function (err, fileObj) {
      if (err) throw new Meteor.Error('500', err, err);
      console.log(fileObj);
      return 'success: ' + fileObj;
    });
  }
});

I get DataMan constructor received data that it doesn't support