I have created small poc using hyperledger fabric and composer. In my project, I am uploading 2 files, for the first time the file getting uploaded but when I am trying to u
So technically, this is a Node question. Using Javascript, eg. fs.readFileSync(‘yourimageFile.jpg’).toString(‘base64’);
, you should be able to convert the image to a Base64 string in your code. You can define 'String' for your chosen (modeled Asset type etc) field to host in Hyperledger Composer. The theory is that, once it is a string, it is sent to the chaincode just like any other string.
these links may help:
-> https://www.thepolyglotdeveloper.com/2016/02/convert-an-uploaded-image-to-a-base64-string-in-node-js/
-> https://belltane.wordpress.com/2017/03/27/storing-images-in-hyperledger-fabric-blockchain/