func (self *Backend) FileReader(id string) (reader io.ReadCloser, filename, contentType string, err error) {
file, err := self.GridFS.OpenId(bson.ObjectIdHex(id))
if err == mgo.ErrNotFound {
return nil, "", "", media.ErrNotFound(id)
} else if err != nil {
return nil, "", "", err
}
filename = id[strings.IndexRune(id, '/')+1:]
return file, filename, file.ContentType(), nil
}
func (self *Backend) LoadBlob(id string) (*media.Blob, error) {
var doc BlobDoc
err := self.Blobs.DocumentWithID(bson.ObjectIdHex(id), &doc)
if err == mgo.ErrNotFound {
return nil, media.ErrNotFound(id)
} else if err != nil {
return nil, err
}
return doc.Blob.Init(), nil
}
func (self *Backend) LoadImage(id string) (*media.Image, error) {
var doc ImageDoc
err := self.Images.DocumentWithID(bson.ObjectIdHex(id), &doc)
if err == mgo.ErrNotFound {
return nil, media.ErrNotFound(id)
} else if err != nil {
return nil, err
}
return doc.Image.Init(), nil
}