In 01_Tutorial I have some confusion
Gezi-lzq opened this issue · comments
01_Tutorial/02_Managing_Data.md:
const IPFS = require('ipfs')
const cid = await NPP.addNewPiece("QmNR2n4zywCV61MeMLB6JwPueAPqheqpfiA4fLPMxouEmQ")
cid = new IPFS.CID(cid)
const content = await NPP.node.dag.get(cid)
console.log(content.value.payload)
If I use const cid = ...
, I should appear when running. TypeError: Assignment to Constant Variable.
And, I think it should be in the create ()
method, when the _init ()
method is called, addawait this._init();
Below is the main.js
file example I have written according to the tutorial in learning.
Only by the modifications mentioned above, it can make this file to run normal, I am not sure if the behavior is correct.
const NPP = require("./newpieceplease");
const IPFS = require("ipfs");
async function main() {
NPP.onready = () => {
console.log("IPFS node identifier ", NPP.orbitdb.id);
console.log("database address ", NPP.pieces.id);
};
await NPP.create();
console.log("created");
// test
addPieceTest();
}
async function addPieceTest() {
let cid = await NPP.addNewPiece(
"QmNR2n4zywCV61MeMLB6JwPueAPqheqpfiA4fLPMxouEmQ"
);
cid = new IPFS.CID(cid);
const content = await NPP.node.dag.get(cid);
console.log(content.value.payload);
}
main();
I have modified the AddNewpiece function in order to run, so that I will return to cid
atif (existingpiece)
async addNewPiece(hash, instrument = "Piano") {
const existingPiece = this.getPieceByHash(hash)
if (existingPiece) {
- await this.updatePieceByHash(hash, instrument)
+ const cid = await this.updatePieceByHash(hash, instrument)
+ return cid
}
const cid = await this.pieces.put({ hash, instrument })
return cid;
}
/01_Tutorial/03_Structuring_Data.md:
Utilizing the practice counter
...
These can be used in your application code like so:
const piece = NPP.getPieceByHash('QmdzDacgJ9EQF9Z8G3L1fzFwiEu255Nm5WiCey9ntrDPSL')
const cid = await NPP.incrementPracticeCounter(piece)
const content = await NPP.node.dag.get(cid)
console.log(content.value.payload)
const content = await NPP.node.dag.get(cid)
Should be changed
const content = await NPP.node.dag.get(new IPFS.CID(cid));