I'm trying to delete from shopping cart, and change quantity information in user profile: here is the structure:
{
"_id": "3YmDfDWMAaoeQHPAJ",
"profile": {
"name": "Armin",
"wish": [
"FMXRAn3TEXCn6skSX",
"avRwogpGvJsKLLKfK",
"PJbRh68pwJrtnKe5c",
"mt2yqLecyTA2Ejd4n"
],
"cart": {
"mt2yqLecyTA2Ejd4n": "1",
"xqwfyqasfcyTA2ajd": "3",
"xL438DBQrNJTJbPmH": "5"
}
},
"username": "armin"
}
I tried the following but it will delete the whole cart
let item = $(event.target).data('id');
Meteor.users.update(Meteor.userId(),{$unset: {"profile.cart": item}});
My goal is to be able to update the value 1,3,5 . and also be able to delete a whole property from cart.
To update an attribute's value in the cart, use $set operator like in the following query:
Meteor.users.update(
Meteor.userId(),
{$set: {"profile.cart.xL438DBQrNJTJbPmH": "10"}}
);
To delete an attribute in the cart:
Meteor.users.update(
Meteor.userId(),
{$unset: {"profile.cart.xL438DBQrNJTJbPmH": ""}}
);
The specified value in the $unset expression (i.e. "") does not impact the operation.
In the case when you have to construct the attribute's name dynamically, you can use an additional variable:
var condition = {};
condition["profile.cart." + dynamicPart] = "";
Meteor.users.update(
Meteor.userId(),
{$unset: condition}
);