UI Doesn't update after SWR data does NEXTJS - mongodb

Question

I have a simple project going on and it is smoothly working but I have failed to add a item delete button. My post request to add items is perfectly working but my delete items doesn't work. I chose to go with post instead of delete because of my api structure.
Repo: https://github.com/berkaydagdeviren/rl-revenue-calculator
const handleClick = async (e) => {
e.preventDefault();
console.log(totalCredit, 'total credit before')
setTotalCredit([...totalCredit, credit])
console.log(ref, 'refFFFFFFF')
const currentDate = ref.current
const options = {
method: "PUT",
headers: {
'Content-type': 'application/json'
},
body: JSON.stringify(
{ date: currentDate, credits: credit }
)
}
var responseClone;
fetch(`api/hello?date=${ref.current}`, options)
.then(res => {
responseClone = res.clone();
return res.json()
}).then(data => {
console.log(data, 'data')
}).then(function (data) {
// Do something with data
}, function (rejectionReason) { // 3
console.log('Error parsing JSON from response:', rejectionReason, responseClone); // 4
responseClone.text() // 5
.then(function (bodyText) {
console.log('Received the following instead of valid JSON:', bodyText); // 6
});
});
setCredit(0)
}
This is working perfectly fine but this does not;
const handleItemDelete = async itemToBeDeleted => {
console.log(itemToBeDeleted, "itemTobeDeleted")
const options = {
method: "PUT",
headers: {
'Content-type': 'application/json'
},
body: JSON.stringify(
{ date: ref.current, index: itemToBeDeleted }
)
}
var responseClone;
await fetch(`api/hello?date=${ref.current}`, options)
.then(async res => {
responseClone = res.clone();
console.log(res, "res")
return await res.json()
// I used this to read server's response when it was giving parsing JSON error
}).then(data => {
console.log(data, 'data')
}).then(function (data) {
// Do something with data
}, function (rejectionReason) { // 3
console.log('Error parsing JSON from response:', rejectionReason, responseClone); // 4
responseClone.text() // 5
.then(function (bodyText) {
console.log('Received the following instead of valid JSON:', bodyText); // 6
});
});
const newTotalCredit = await data.find(item => item.date == ref.current).credits
setTotalCredit(newTotalCredit)
console.log("STATE UPDATED BEFORE DATA")
}
This is where I reference handleItemDelete to;
credit.map((item, index) => {
return (
item > 0 ?
React.Children.toArray(
<div>
<span style={{ color: 'green' }}> +{item}C </span>
<button onClick={() =>handleItemDelete(index)}>
X
</button>
</div>
)
:
null
)
})
}
And this is how I handle put request, again I can see that mongodb is updated after refresh but because ui didn't totalCredits' indexes are messed up and results in either no deletion or false deletion.
handler.put(async (req, res) => {
let data = req.body
console.log(typeof(data))
if (data.index) {
let {date, index} = req.body
console.log(data.index, "data.index")
await req.db.collection('credits').update({date: date}, {$unset: {["credits."+ index] : 1}})
await req.db.collection('credits').update({date: date}, {$pullAll: {credits: [null]}})
}
await req.db.collection('credits').updateOne({date: data.date}, {$push: {credits: data.credits}})
res.json(data)
})
I use SWR right in the index.js Home component
export default function Home()
{
const [totalCredit, setTotalCredit] = useState([])
const [credit, setCredit] = useState('')
const ref = useRef(null);
const [date, setDate] = useState(null);
const { data } = useSWR('/api/hello', async (url) => {const response = await axios.get(url);
return response.data; },
{ refreshInterval: 1000, revalidateOnMount: true });
Sorry if I'm not clear or providing wrong pieces of code please let me know. Thank you in advance!

Answer 1

your options in handleDeleteItem:
const options = {
method: "PUT",
headers: {
'Content-type': 'application/json'
},
Should not method be DELETE? You are sending PUT request instead of DELETE