I want to fetch my username, user photo, my organization name,role, address from my pod using expressJS. I am using rdflib. But my name is returning null. I am following rdflib .
// declaration part
const {SolidNodeClient} = require("Solid-Node-Client");
const client = new SolidNodeClient();
const store = $rdf.graph();
const me = store.sym('my webId');
const profile = me.doc()
const VCARD = new $rdf.Namespace(‘http://www.w3.org/2006/vcard/ns#‘);
const FOAF = $rdf.Namespace('http://xmlns.com/foaf/0.1/');
//code part
let name = store.any(me, VCARD(‘fn’)) || store.any(me, FOAF(‘name’));
console.log("user name: ", name);
but name is showing null on console.
jeffz
July 4, 2021, 3:02pm
2
a) Your capitalization is wrong, it should be require(“solid-node-client”)Can not access node solid development server localhost - #13 by Tapu106 .
jeffz
July 4, 2021, 3:07pm
3
Here is your code, but fixed with the changes mentioned above. It prints my name.
const $rdf = require('rdflib');
const {SolidNodeClient} = require("solid-node-client");
const client = new SolidNodeClient();
const store = $rdf.graph();
const fetcher = $rdf.fetcher(store,{fetch:client.fetch.bind(client)});
const me = store.sym('https://jeff-zucker.solidcommunity.net/profile/card#me');
const profile = me.doc()
const VCARD = $rdf.Namespace('http://www.w3.org/2006/vcard/ns#');
const FOAF = $rdf.Namespace('http://xmlns.com/foaf/0.1/');
fetcher.load(profile).then( ()=>{
let name = store.any(me, VCARD("fn")) || store.any(me, FOAF("name"));
console.log("user name: ", name.value);
});
hey Jeff, I hopped on this. But I haven’t the correct setup I guess. I’ ll attach my html, my js and the error message. Can you see what I missed ? (perhaps I’ll have to setup express… setup webpack… work with rdflib-save… the require already doesn’t work…)
<!DOCTYPE html>
<html lang = "de">
<head>
<meta charset = "utf-8">
<title>print name</title>
</head>
<body>
<h5>output goes to console</h5>
<script src = "index.js"></script>
<!-- <img src="favicon.ico" onload="execCode()" > -->
<p>----</p>
<!-- <p id = "something"></p> -->
</body>
</html>
const $rdf = require('rdflib');
const {SolidNodeClient} = require("solid-node-client");
const client = new SolidNodeClient();
const store = $rdf.graph();
const fetcher = $rdf.fetcher(store,{fetch:client.fetch.bind(client)});
const me = store.sym('https://testpro.solidweb.org/profile/card#me');
const profile = me.doc()
const VCARD = $rdf.Namespace('http://www.w3.org/2006/vcard/ns#');
const FOAF = $rdf.Namespace('http://xmlns.com/foaf/0.1/');
fetcher.load(profile).then( ()=>{
let name = store.any(me, VCARD("fn")) || store.any(me, FOAF("name"));
console.log("user name: ", name.value);
});
thanx
jeffz
July 4, 2021, 4:58pm
5
@ewingson - Solid Node
okay… I now have done npm install rdflib --save in the dir of the js. how do I execute the script ?
Thanks! I can successfully access my name. But the code you provided in Can not access node solid development server localhost returns “Can not read property value of null”
const { SolidNodeClient } = require("solid-node-client");
const client = new SolidNodeClient();
const $rdf = require("rdflib");
const store = $rdf.graph();
const fetcher = $rdf.fetcher(store,{fetch:client.fetch.bind(client)});
const FoaF = $rdf.Namespace('http://xmlns.com/foaf/0.1');
const VCARD = $rdf.Namespace("http://www.w3.org/2006/vcard/ns#");
const pim = $rdf.Namespace('http://www.w3.org/ns/pim/space#');
router.get("/loginSSI", async function (req, res) {
console.log("done");
try {
console.log("try ");
let ses = await client.login({
idp: YOUR_IDENTITY_PROVIDER, // e.g. https://solidcommunity.net
username: "username",
password: "password",
});
console.log(ses.webId);
const me = $rdf.sym(ses.webId);
console.log("me: ", me);
const profile = $rdf.sym(ses.webId).doc();
console.log("profile: ", profile);
await fetcher.load(profile);
let myPrefs = store.any(me,pim("preferencesFile"));
await fetcher.load(myPrefs);
let mbox = store.any( me , FoaF('mbox'));
console.log("mbox: ",mbox.value); // can not read property 'value' of null
let token = uuidv4();
req.session.token = token;
req.session.save((err) => {
auth.validTokens.push(token);
res.redirect("/");
});
} catch (error) {
console.log(error.message);
}
});
jeffz
July 4, 2021, 9:06pm
10
I think you first need to see if you can login from the command-line. Try this:
const {SolidNodeClient} = require("solid-node-client");
const client = new SolidNodeClient();
async function login(credentials){
console.log('logging in ...');
let session = await client.login(credentials);
if( session.isLoggedIn ) {
console.log(`logged in as <${session.WebID}>`);
return session;
}
else {
console.log(`Could not login to <${credentials.idp}>`);
}
}
login({
idp: "YOUR_IDENTITY_PROVIDER", // e.g. https://solidcommunity.net
username: "username",
password: "password",
});
jeffz
July 4, 2021, 9:30pm
13
You wrote :
I am sorry, I can not debug your server or your express. I can help you with solid-node-client. But please run the script I provided and tell me the results.
Oh sorry. the login function is working fine. It returns my webId.
jeffz
July 4, 2021, 9:35pm
15
You were able to login to your local NSS?
No. I am using my solid Community Pod. I’ve tried with my local NSS but was unsuccessful.
jeffz
July 4, 2021, 9:38pm
17
You tried the script I provided using the login credentials for your local NSS? What were the results? (results of the script, I don’t care what the server log is)
Sorry if I didn’t understand you correctly. I tried the script you provided with my solidCommunity pod and it returns my webId.
jeffz
July 4, 2021, 9:44pm
19
Isn’t your aim to use solid node client to access your local NSS pod?
Yeah. But due to some issues, I am accessing solidCommunity instead of my local NSS temporarily.
jeffz
July 4, 2021, 9:50pm
21
Please try the script I provided with your local NSS details. It is the only way to find out what the problem is.
Ok. I’ll get back to you soon. Thanks.
