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How to invalidate from React-Query mutation?

I am trying to refetch a specific data, which should update after a post request in another API. It's worth mentioning that based on that request two APIs should update and one of them updates, another one not.
I've tried multiple ways to refetch the API based on successful post request, but nothing seems to work.
I tried to also add 2nd option like this, but without success.
{
refetchInactive: true,
refetchActive: true,
}
As it mentioned in this discussion,
maybe "keys are not matching, so you are trying to invalidate something that doesn't exist in the cache.", but not sure that it's my case.
What is more interesting is that clicking the invalidate button in the devtools, the invalidation per se works.
Mutation function:
import { BASE_URL, product1Url, product2Url } from './services/api'
import axios from 'axios'
import { useMutation, useQueryClient } from 'react-query'
export const usePostProduct3 = () => {
const queryClient = useQueryClient()
const mutation = useMutation(
async (data) => {
const url = `${BASE_URL}/product3`
return axios.post(url, data).then((response) => response)
},
{
onSuccess: async (data) => {
return (
await queryClient.invalidateQueries(['prodKey', product1Url]), //this one doesn't work
queryClient.invalidateQueries(['prodKey', product2Url]) //this api refetch/update works
) },
},
)
return mutation
}
What am I doing wrong?

You shold do it like this
onSuccess:(response)=>{
queryClient.setQueryData("your query key",response.data)
}
Or if you just want to invalidate queries
import {querCache} from "react-query"
...
onSuccess:(response)=>{
queryClient.invalidateQueries("your query key")
queryClient.invalidateQueries("your query key")
//you also can refetch data like this
queryCache.refetchQueries("your query key")
}

Change axios BaseURL dynamically based on select html element

I have a vuejs app that talks to multiple identical backends that are geographically separate. Each endpoint has a unique URL - example:
export const SERVICE_BASE_API_URLS = [
{ name: 'Site A', endpoint: 'http://api.a.service.com/api/v1/' },
{ name: 'Site B: 'http://api.b.service.com/api/v1' },
}
I am allowing users to select the endpoint they'd like to interact with via a select box. I'd like to set up the selected URL to be used in any further interactions globally for axios. I thought setting up Vue.Prototype.$current_endpoint would work.
So I have the onchange action of the select element store it's endpoint value in Vue.Prototype.$current_endpoint.
I have to setup an axios instance that is used by multiple endpoint classes once e.g. auth-header.js is imported by authenticate.js
import axios from 'axios';
import * as URLConstants from '../configs/urls';
export const axios_instance = axios.create({
//baseURL: URLConstants.Service_BASE_API_URL, // this was earlier set in .env. But this would be statically set for the vue instance
baseURL: Vue.prototype.current_api_endpoint
})
axios_instance.interceptors.request.use(
function(config) {
if (JSON.parse(localStorage.getItem('user')) && JSON.parse(localStorage.getItem('user')).access_token) {
const token = JSON.parse(localStorage.getItem('user')).access_token
config.headers["JWTAuthorization"] = 'Bearer ' + token;
}
return config;
},
function(error) {
return Promise.reject(error);
}
);
So later on in interact-with-service.js I have
import {
axios_instance
} from './auth-header';
import APIMixin from './mixin';
class ExpenseService extends APIMixin {
get(params) {
...
...
return axios_instance
.get("expense" + params)
.then(this.handleResponse);
}
However, I'm finding it practically impossible to set up the axios base url properly. Can someone please show me the way? :)

You can change default base url https://axios-http.com/docs/config_defaults
axios_instance.defaults.baseURL = "selected url";

How to server side redirect to other page without reloading the page and still keeping the url in Nextjs app?

I have a [slug].js page that will fetch API to get the destination page
export async function getServerSideProps({ query, res }) {
const slug = query.slug;
try {
const destination = await RoutingAPI.matchSlug(slug);
res.writeHead(302, { Location: destination });
res.end();
// return {
// redirect: {
// permanent: true,
// destination,
// },
// }
} catch (error) {
return {
notFound: true
}
}
}
If I client redirect from another page to slug page, it works and keeps URL the same as slug but it makes the browser reload. If I use
return {
redirect: {
permanent: true,
destination,
},
}
it will not reload the browser but it change URL to the destination, not the same as slug. How do i fix this problem? I would appreciate any ideas, thanks

You can use rewrites to achieve this. From the docs:
Rewrites allow you to map an incoming request path to a different destination path.
In your next.config.js add this:
module.exports = {
async rewrites() {
return [
{
source: "/:slug",
destination: "/your-destination",
},
];
},
};
rewrites is an async function that expects an array to be returned holding objects with source and destination properties:
source is the incoming request path pattern.
destination is the path you want to route to.

Ok, I have a solution, it doesn't reload and it doesn't change the url.. however it requires some client side script.. as you see in the example below
Hope you find it to your liking :D
Here's my codesandbox
index.js(from your codesandbox)
import Link from "next/link";
export default function IndexPage() {
return (
<div>
Hello World.{" "}
<Link href="/something-slug">
<a id="myElem">Go to slug pageee</a>
</Link>
<script
dangerouslySetInnerHTML={{
__html: `
let elem=document.getElementById('myElem')
elem.addEventListener('click',async function(event){
event.preventDefault()
console.log(event.path[0].href)
let myFetch=await fetch(event.path[0].href)
let text=await myFetch.text()
let newHTML=document.createElement('html')
newHTML.innerHTML=text
let _next=document.getElementById('__next')
_next.innerHTML=""
let requestedNext=[...newHTML.getElementsByTagName('div')].filter(a=>a.id=="__next")[0]
let scripts=[...requestedNext.getElementsByTagName('script')]
scripts.forEach(a=>eval(a.innerHTML)) //eval any scripts sent by YOUR requested _next
console.log(requestedNext)
_next.innerHTML=requestedNext.innerHTML
})
`
}}
></script>
</div>
);
}
slug.js(again, from your codesandbox)
export default function AboutPage() {
return <div>About us</div>;
}
export async function getServerSideProps({ query, req, res }) {
return {};
}

location is not defined error in react + next js?

I am trying to send some text on basic of hosted url (where my build is deployed).but i am getting this error
ReferenceError: location is not defined
here is my code
https://codesandbox.io/s/laughing-mendel-pf54l?file=/pages/index.js
export const getStaticProps = async ({ preview = false, previewData = {} }) => {
return {
revalidate: 200,
props: {
//req.host
name: location.hostname == "www.google.com" ? "Hello" : "ccccc"
}
};
};

Can you show your imports, because it could be that you are importing router from 'next/client'
Assuming that you are using functional-based component
You need to import router as follows:
import {useRouter} from "next/router";
in your function body:
const router = useRouter();

getStaticProps() is executed at build time in Node.js, which has no location global object – Location is part of the browser API. Additionally, because the code is executed at build time, the URL is not yet known.
Change getStaticProps to getServerSideProps (see documentation). This will mean the function is called at runtime, separately for each request.
From the context object passed to getServerSideProps, pull out the Node.js http.IncomingMessage object.
On this object, look for the Host header.
export const getServerSideProps = async ({ req }) => {
return {
props: {
name: req.headers.host === "www.google.com" ? "Hello" : "ccccc"
}
};
};
Note:
I also changed == to ===, as it's generally advised to use the latter. The former can produce some unexpected results because of silent type conversions.
I also removed revalidate, as this is not applicable to getServerSideProps().

Server Side Render Dynamic Page based on Route Param

I'm starting with Next.js and after going through docs, I cannot figure out how to get the route param code inside getStaticPaths method as shown below!?. code is not known before hand by any means and it can be anything.
I don't want to call api and get the data using useEffect inside the component.
File: pages/post/[code].js
import React from 'react';
import apiCall from 'api/something';
export default ({post}) => {
return <>
render components here based on prop `post`
</>
}
export async function getStaticPaths() {
// How to get [code] from the route here, which can be used below?
return {
paths: // NEED [code] HERE from current route,
fallback: false
}
}
export async function getStaticProps(ctx) {
return {
props: {
// [ctx.code] resolved from current route with the help of getStaticPaths,
post: apiCall(ctx.code)
}
}
}
I've tried getServerSideProps which works for me:
export const getServerSideProps = async (ctx) => {
return {
props: {
post: await apiCall(ctx.query.code)
}
};
};
But it fails when I do next export stating:
pages with getServerSideProps can not be exported. See more info here: https://err.sh/next.js/gssp-export
After investigating further on this error I found this solution, which is not feasible for me as my app is hosted on Heroku.
I'm trying to server-side render the html along with the data based on the route param code. But not able to do so now.

The purpose of the function getStaticPaths is to generate a list of paths for which static HTML will be rendered at build time. For example, for a list of 10 posts, you can generate 10 posts/[id] routes ahead of time if you know the id of the posts.
How getStaticPaths works with dynamic routes in more details..
Suppose you have a dynamic route /posts/[postId] if you choose to use static-generation you have to generate a list of paths that will include the postId as a route param and for each path returned, the function getStaticProps will be called to query the data at build time. Example,
// for /post/[postId]
export const getStaticPaths = async () => {
// if you know all the postId ahead of time
const paths = [
{ params: { postId: '1234' } }, // keep in mind postId has to be a string
{ params: { postId: '3792' } },
{ params: { postId: '1749' } },
]
return {
paths,
fallback: false // we are disabling fallback because we know all the paths ahead of time
}
}
// for each path returned getStaticProps will be called at build time
export const getStaticProps = async (context) => {
// you have access to the postId params that you returns from
// getStaticPaths here
const postId = context.params.postId
// now you can query the data from postId and return as props
return {
props: // queried data
}
}
If fallback is set to false any for any route path that is not returned from the function getStaticPaths nextjs will simply show a 404 error page.
How to use fallback: true to generate static pages for route params not known ahead of time
If you know some postId of the posts and the data for the posts do not change very often, you can choose to generate the pages with fallback property set to true, which will display a fallback version of the page for the paths that are not returned from the function getStaticPaths. And on request for the page nextjs will call getStaticProps and send the data as JSON which will be used to render the page in the browser.
Example,
// for /post/[postId]
export const getStaticPaths = async () => {
// you can get how many ever postIds are know ahead of time
// and return as paths with fallback set to true
const posts = // queried data from db or fetched from remote API
const paths = posts.map(post => { params:{ postId: post.id.toString() }})
return {
paths,
fallback: true
}
}
// in your page Component check for fallback and render a loading indicator
import { useRouter } from 'next/router';
const MyPage = (props) => {
// before you do anything
const router = useRouter();
if (router.isFallback) {
return <div>Loading....</div>
}
// rest of your page logic
}
If your data is very dynamic, let's say changing every 30mins or an hour or so. You can choose to use server-side rendering which will fetch the data on per request basis, but TTFB(time to first byte) will be higher. For example,
// for /post/[postId]
export const getServerSideProps = async (context) => {
// you also have access to the param postId from the context
const postId = context.params.postId
// query the data based on the postId and return as props
return {
props: // queried data
}
}
Keep in mind if you choose to go with getServerSideProps the function will be called on per-request basis so time to first byte will be higher.
Depending on use-cases you can also use static generation with client-side data fetching using swr from nextjs team repo link.

As I understand, you want to statically generate dynamic routes at build time.
To do so you need to let Next.js know what pages to generate, by specifying all codes.
export async function getStaticPaths() {
// you don't need here a code from current route
// but you need to specify all known post codes
return {
paths: [
{ params: { code: '1' } },
{ params: { code: '2' } },
{ params: { code: '3' } },
]
fallback: false
}
}
You would need to re-build app every time you change the posts.
Use getServerSideProps if you don't want to re-build project every time. Then the data would be fetched at request time. You can't export it because it requires Node.js server.