Hello,
I’m trying to get a user ID from regular visitors (not logged in) by using this code :
import wixUsers from 'wix-users';
$w.onReady(function () {
let user = wixUsers.currentUser;
let userId = user.id;
console.log("user ID", userId);
});
In preview mode, it works just fine and I have an ID, but on the published website it’s totally random. Sometimes I have an ID, but most of the time the ID is undefined…
Why ? Am I missing something ?
Thanks for your help !
In Preview, you will get your own (logged in) _id. In Publish, there is no _id for non-logged in users. Sometimes it’s empty, sometimes a crazy long string, but both are unusable.
It comes down to this: a non-logged in user (“Visitor”) does not have a _id.
Thanks for the reply. Is there a way to have any kind of specific information about the visitor (session id, …? ). My visitors can add data in a database collection and I‘d like them to be able to retrieve what they submitted (like a shopping cart). Wix Store can do that… (so Wix has a way of knowing who is visiting (even not logged in). I hope it makes sense 
. Thanks
Just a tought but maybe wix session can be the solution to this.
It can save data while on the page.
I already thought about that but there is not so much explained about Wix Session in the Velo documentation. I’d like to store multiple items and retrieve them in a repeater. So maybe use an array of objects 
. I’m not so good at coding
Just a few days ago, i had a similar issue, perhaps this post can help you out…
Almost sure, that you want to do the same, or a similar function, like shown in the link.
Maybe instead of using an id (wich wont work for visitors try to ise their ip adress. This way you have a unique key for the visitor’s device.
Heres a tutorial i found.
@russian-dima Great ! Yes it seems to be what I’m looking for. I’ll try that as soon as possible and let you know. Thanks
@volkaertskristof Good idea ! I’ll investigate it and let you know . Thanks !
@russian-dima @volkaertskristof
So I tried with the session and arrays and it works “ok ish”.
Here is my code below.
The principle is that when I click a “add to cart” button, the object is stored in the array and the array in the session.
When I add another product to the cart, I get the array from the session, push the new object and store the new array back to the session.
It works but it certainly not the cleanest code
$w.onReady(function () {
let itemObj = $w("#dynamicDataset").getCurrentItem();
let array=[];
let arraySession = session.getItem("Array");
$w("#addDB").onClick( (event) => {
if(arraySession === null){
array.push(itemObj);
session.setItem("Array", JSON.stringify(array));
}else{
arraySession = session.getItem("Array");
let arrayItems = JSON.parse(arraySession);
arrayItems.push(itemObj);
session.setItem("Array", JSON.stringify(arrayItems));
}
} );
});
When I go to the “cart page”, I retrieve the array and show the data in a repeater.
MY LAST PROBLEM is that I try to remove a specific item from the cart when I push a button. I use the splice () function.
$w.onReady(function () {
let arraySession = session.getItem("Array");
const arrayItems = JSON.parse(arraySession);
function populateRepeater() {
$w(`#repeater1`).data = arrayItems;
$w(`#repeater1`).onItemReady(($w, itemData,index) => {
$w(`#text8`).text = itemData.title;
$w("#image1").src = itemData.image;
$w("#removeBtn").onClick((event) => {
arrayItems.splice(index,1);
console.log(arrayItems);
populateRepeater()
});
});
}
populateRepeater()
My code above is not working well. The item is not removed from the session but only from the repeater…
session.removeItem("key");
How can I remove a specific item from the array with a key “Array” from the session ?
Thanks 
I never used the session part myself so i don’t really know how to do this.
But if i have the time i will try it out myself and make a small tutorial about it.
This way i learn a bit to 
Your question is totaly confusing!
“How can I remove a specific item from the array with a key “Array” from the session ?”
You have already “successfully” removed the item from the array/object (within your repeater).
$w.onReady(function () {
let arraySession = session.getItem("Array");
const arrayItems = JSON.parse(arraySession);
function populateRepeater() {
$w(`#repeater1`).data = arrayItems;
$w(`#repeater1`).onItemReady(($w, itemData,index) => {
$w(`#text8`).text = itemData.title;
$w("#image1").src = itemData.image;
$w("#removeBtn").onClick((event) => {
arrayItems.splice(index,1);
console.log(arrayItems);
populateRepeater()
});
});
}
populateRepeater()
That means, that you have already a new array/object-value with one values less!
All you have to do now is to write it back to session. Is this what you wanted to do ?
And last question is → "Why do you have 2x populateRepeater() ???
@russian-dima Thanks for your answer. Thats what I did finally yes ! I thought it would be maybe easier to remove an item from the session with simple code (dreaming ^^).
Here is my code if it can help someone else.
function populateRepeater() {
let arraySession = session.getItem("Array");
const arrayItems = JSON.parse(arraySession);
console.log("arraySession",arrayItems)
$w(`#repeater1`).data = arrayItems;
$w(`#repeater1`).onItemReady(($w, itemData,index) => {
$w(`#text8`).text = itemData.title;
$w("#image1").src = itemData.image;
const deleteButton = $w("#removeBtn");
deleteButton.onClick((event) => {
arrayItems.splice(index,1);
session.setItem("Array", JSON.stringify(arrayItems));
populateRepeater()
});
});
}
And you’re right with the 2 populateRepeater(). It was for another button that I don’t use anymore. My bad.
Thanks for your help !
@costino80
Well done! And surely there will be someone who will need this code, because of beeing in the same situation.