Accessing nested json data with Hooks

Question

I am having trouble filtering the json that I have in React Typescript Using Hooks. I have a JSON that comes from a fetch and it looks like this:

[
{
"dealer 1":
    [
    {
    "name": "SERVICE 1"
    "city": "NORTH CANTON"
    "phone": "3306596372"
    "isOpen": "true"
    },
    {
    "name": "SERVICE 2"
    "city": "OHIO"
    "phone": "3306596372"
    "isOpen": "true"
    }
    ]
},
{
"dealer 2":
    [
    {
    "name": "SERVICE A"
    "city": "WASHINGTON"
    "phone": "3306596375"
    "isOpen": "true"
    },
    {
    "name": "SERVICE B"
    "city": "SEATTLE"
    "phone": "3306596376"
    "isOpen": "true"
    }
    ]
}
]

my code for fetching the api is:

useEffect(() => {
    axios.get("API URL here")
        .then(res => {
            console.log(res)
            setCTSN(res.data)
        });
}, []);

and I wanted to return all open dealers so I need to filter it by "isOpen=true"

const isOpen = 'true'

const result = OPEN
    .map(item => ({
        ...item, //Spread types may only be created from object types.ts(2698)
        children: item.children
            .filter(child => child.value.includes(isOpen.toLowerCase()))
    }))
    .filter(item => item.children.length > 0)

console.log(result)

but I am getting an error with the '...item' and I'm not sure if I am doing it correctly in React Typescript.

Can someone help me?

Answer 1

You can do it this way

OPEN.filter(item => item[Object.keys(item)[0]].some(service => service.isOpen))

But IMHO you have a problem with the json data, it doesn't looks like a good modelling.

This structure would be better, and thus filtering easier:

{
name: "dealer 1",
services:
    [
    {
    "name": "SERVICE 1"
    "city": "NORTH CANTON"
    "phone": "3306596372"
    "isOpen": "true"
    },
    {
    "name": "SERVICE 2"
    "city": "OHIO"
    "phone": "3306596372"
    "isOpen": "true"
    }
    ]
}

and then filter like this...

OPEN.filter(item => item.services.some(service => service.isOpen))

Answer 2

You should make ur OPEN array with this method then use map for showing them on react.

if u have trouble with showing them, ask me for code on comment.

 const Json = [ { "dealer 1": [ { "name": "SERVICE 1", "city": "NORTH CANTON", "phone": "3306596372", "isOpen": true }, { "name": "SERVICE 2", "city": "OHIO", "phone": "3306596372", "isOpen": false } ] }, { "dealer 2": [ { "name": "SERVICE A", "city": "WASHINGTON", "phone": "3306596375", "isOpen": true }, { "name": "SERVICE B", "city": "SEATTLE", "phone": "3306596376", "isOpen": true } ] } ] const OPEN = [] Json.forEach(item => { OPEN.push({ dealer:Object.keys(item)[0], service:item[Object.keys(item)[0]].filter(service =>service.isOpen) }) }) console.log(OPEN)