Can you provide guidance on how to increase the value within a nested object located inside an array within another object?

In my attempt to create a bot in discord.js, I am facing a challenge where I need to implement an inventory system with items that have durability. The data is stored in MongoDB Atlas and the structure of the inventory is as follows:

user: {
  id: 'user-id',
  name: 'user-name',
  inventory: [
    {
      name: 'item',
      durability: 5
    ,
    {
      name: 'another-item',
      durability: 20
    }
  ]
}

I am looking for a way to decrement the durability of an item in the inventory without affecting any other items in the array, but I haven't been able to find a solution so far.

javascriptmongodbmongoosediscord.js

Answer №1

If you want to update only specific values, you can utilize arrayFilters.

Another option is to use $inc to increment the value (in this case, decrement by 1).

db.collection.update({
  "id": "user-id"
},
{
  "$inc": {
    "inventory.$[element].durability": -1
  }
},
{
  "arrayFilters": [
    {
      "element.name": "item" //Replace with the object name you want to update
    }
  ]
})

For an example, check this link.

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