How to save file to gridfs? about loopback-connector-mongodb

[raymondfeng]

The LoopBack mongodb connector doesn’t support gridfs out of box. But you can use the mongodb driver api.

For example,

var db = app.myDataSource.connector.db;

var gridStore = new GridStore(db, null, "w");
gridStore.open(function(err, gridStore) {
gridStore.write("hello world!", function(err, gridStore) {
gridStore.close(function(err, result) {

// Let's read the file using object Id
GridStore.read(db, result._id, function(err, data) {
  test.equal('hello world!', data);
  db.close();
  test.done();
});

});
});

Thanks,

---

Raymond Feng
Co-Founder and Architect @ StrongLoop, Inc.

StrongLoop http://strongloop.com/ makes it easy to develop APIs http://strongloop.com/mobile-application-development/loopback/ in Node, plus get DevOps capabilities http://strongloop.com/node-js-performance/strongops/ like monitoring, debugging and clustering.

On Dec 20, 2014, at 8:42 AM, Maker Su [email protected] wrote:

How to save file to gridfs as below for example?
Thank you very much.

def save(inputStream, contentType, originalFilename) {
def inputFile = gridFS.createFile(inputStream)
String extension = originalFilename.split('.')[-1]
String gridFSFilename=inputFile.id.toString() + '.' + extension
inputFile.setFilename(gridFSFilename)
inputFile.save()
return inputFile.filename
}
—
Reply to this email directly or view it on GitHub #73.

[makersu]

Thank you for hint.

[makersu]

When I try to run the sample,it returned:

TypeError: Cannot read property 'GridStore' of undefined 

So, I npm install mongodb and var GridStore = require('mongodb').GridStore,then I got:

TypeError: Cannot read property 'w' of undefined

Any help will be appreciated.Thanks.

[makersu]

My solution:

var db = app.datasources.db.connector.db;
db.safe = {w: 1};

var gridStore = new GridStore(db, null, "w");
  gridStore.open(function(err, gridStore) {
  ...
...

[paulJordaan]

When trying this example with:

var db = app.datasources.db.connector.db;

It returns with with db as undefined.

Any suggestions?

[superkhau]

Closing as resolved. @paulJordaan @makersu does var db = app.myDataSource.connector.db; work? Ping and I will reopen this issue if you still more information.