GridFS Binary to URL

Question

Is there a way to convert GridFS binary to a URL that can be used on a src?

Let me explain:

When an image is stored on mongoDB by GridFS it creates to files(fs.files & fs.chunks). In fs.chunks the data is stored like so:

_id:ObjectID('')
files_id:ObjectID('')
n:0
data:Binary('/9j/4S...',0)

Exist any way to convert that binary which is an image(a jpg to be precise) into a URL valid for a HTML img tag?

Some kind of URL.createObjectURL()

By the way, I tried to pass the binary file into URL.createObjectURL() and the displayed error is the following:

TypeError: URL.createObjectURL: Argument 1 is not valid for any of the 1-argument overloads.

Thanks in advance.

score 2 · Accepted Answer · answered Mar 08 '22 at 14:32

2

Ok, I finally find a helpful answer to my question on this other question:

Creating a BLOB from a Base64 string in JavaScript

Here, the GridFS binary which is a base64 binary is converted in to a Blob object. Then the Blob object can be easily passed through the "URL.createObjectURL()"

The function to convert the base64 to blob is provided in the answer.

I hope this is helpfull for someone else.

answered Mar 08 '22 at 14:32

Rommel

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You can accept your own answer if you want – c8999c 3f964f64 Mar 08 '22 at 15:10

GridFS Binary to URL

1 Answers1