If there's an array in the state:
state: {
users: []
},
Containing objects like:
{
id: 1,
name: "some cool name"
}
To add them to the store using a mutator like users.push(user);, how can we ensure that instead of 0:{...}, it uses the actual id as the key 1:{...}?
One approach would be users[user.id] = user, but this might not maintain reactivity in Vue.js.
If you are looking to access data by id, using an array may not be the best choice. Consider using an object instead, like users: {}. Arrays work best when there are minimal gaps between ids.
To ensure reactivity in your values, utilize Vue.set, as outlined in the Vue.js documentation here: https://v2.vuejs.org/v2/guide/reactivity.html#Change-Detection-Caveats. For instance:
Vue.set(users, user.id, user)
If you opt to continue using an array, there are alternative methods like https://v2.vuejs.org/v2/guide/list.html#Caveats, such as using splice.
For further information on normalizing data in Vuex, check out this thread: https://forum.vuejs.org/t/vuex-best-practices-for-complex-objects/10143
Update:
Basing on your requirement for key-based lookup and filtering, consider storing values in an object and creating a getter or computed property for Object.values(users) when needing an array format. Getters and computed properties are cached, minimizing overhead when users change. This array can then be filtered using filter.
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