I build an app in React with Redux and in my state I have a list of objects and I want to update one object from that list by unique id.
My object looks like:
{
id: '',
title: '',
description: '',
label: '',
}
My state:
const initialState = {
compare: dayjs().month(),
savedEvents: [],
}
When I push a new event in that list I use:
case 'events/setNewEvent':
return { ...state, savedEvents: [...state.savedEvents, action.payload] };
My problem is that I don't know to write the right code to update just one object by id sent from my form.
You can use combination of Array method map and spread operator
function updateOne(array, obj) {
return array.map((item) => {
if (obj.id === item.id) {
// update whatever you want
return {...item, title: obj.title };
} else {
return item;
}
})
}
reducer:
case 'events/setNewEvent':
return {
...state,
savedEvents: updateOne(state.savedEvents, action.payload)
};