I have problem with getInitialProps method in NextJS. It is never called. This is project where I have Apollo GraphQL client for some pages and getInitialProps for other. I am not sure how to configure them correctly to work.
Apollo is working fine and fetching data as it should. Problem is that getInitialProps isn't called.
Here is my custom _app.js file
const App = ({ Component, pageProps, apollo }) => {
return (
<ApolloProvider client={apollo}>
<Component {...pageProps} />
</ApolloProvider>
)
}
const API_URL =
process.env.NODE_ENV === "development"
? "http://localhost/wordpress/index.php?graphql"
: "https://page/index.php?graphql"
export default withApollo(({ initialState }) => {
return new ApolloClient({
link: new createHttpLink({
uri: API_URL,
fetch: fetch
}),
cache: new InMemoryCache()
})
})(App, { getDataFromTree })
And here is how I call getInitialProps on page
Coupons.getInitialProps = async function() {
const res = await fetch('http://localhost:8000/data/');
const data = await res.json();
console.log(`Data fetched. Count: ${data.length}`);
return {
shows: data.map(entry => entry.show)
};
};
Also. Pages where I have Apollo fetching data doesn't need to call this REST API. Apollo pages and REST pages are totally different
This problem was fixed by following documentation on https://github.com/zeit/next.js/tree/canary/examples/with-apollo
Thing is that I wrapped whole _app in Apollo provider and right way is to wrap only pages that need Apollo in it.
Other that need getInitialProps should remain as is and call REST API in them.
Related
Can anyone help me why my code doesn't work to fetch API?
I have to build a weather app from several components, must build it structured.
My plan is to have one service component that I have API service in there. then I have to make 3 more components, search component to handle the city search, weatherToday component to show today weather, and weatherForecast component to show five days forecast.
And I have to fetch the API with async an await. Here is the code that I tried(just now I have the code in my App.js just to try if my fetch work)
import { useState, useEffect } from "react";
function App() {
const [data, setData] = useState();
const fetchData = async () => {
await fetch(
`http://api.weatherapi.com/v1/forecast.json?key=1d172d3904e246849d3183628230802&q=Stockholm&days=6&aqi=no&alerts=no`
)
.then((response) => {
return response.json();
})
.then((data) => {
setData(data);
});
};
useEffect(() => {
fetchData();
}, []);
return (
<>
<h3>{data.location.name}</h3>
<p>{data.current.temp_c}</p>
<p>{data.location.localtime}</p>
</>
);
}
export default App;
First of all, welcome to React and StackOverflow!
There's a few issues here:
The main issue is CORS. You can't call this API from your browser - it's meant to be called from a server (backend). I highly recommend using Next.js since you like React, it uses that as it's framework - but it allows you to have Server Components, essentially an Express backend, so that you can perform this API call - then retrieve that data using this client component just to display the data (not to fetch it).
Another issue (but not the problem here) is reusing the data variable in the local scope of then((data) => is not good when you have data defined higher up in the component scope for your state. Use then((d) => instead.
I created a Next.js 13 sandbox for you with this working API call to get you started:
https://codesandbox.io/p/sandbox/broken-field-4nsp1p
In Next.js 13, you can use the app folder, where every component is a Server Component by default. Then you can create Client Component, like the one you have above - you simply have to add use client to the very top of the file, that's it.
Since Next.js 13 is very new (the app folder and concept of Server Components very new and bound to change), you would want to potentially just stick with the pages folder.
In there, you'll see the client component which calls the api folder's getWeather API call.
Finally, you shared your private key with the public. You need to destroy and regenerate that key now:
From the WeatherAPI.com Docs:
Authentication
API access to the data is protected by an API key. If at anytime, you
find the API key has become vulnerable, please regenerate the key
using Regenerate button next to the API key.
https://www.weatherapi.com/docs/
If don't want to use Next.js - then you'll need to use some sort of backend, like Firebase Functions or Google Cloud Functions, etc. Next.js is probably the easiest thing to adapt if you like React though!
Learn about Next.js 13 & /app folder:
https://beta.nextjs.org/docs/getting-started
Learn about Next.js 12 & /pages folder:
https://nextjs.org/docs
Implementing Fetch via Next.js 13
app/head.tsx
export default function Head() {
return (
<>
<title>Weather App</title>
<meta content="width=device-width, initial-scale=1" name="viewport" />
</>
);
}
app.layout.tsx
export default function RootLayout({
children,
}: {
children: React.ReactNode;
}) {
return (
<html lang="en">
{/*
<head /> will contain the components returned by the nearest parent
head.tsx. Find out more at https://beta.nextjs.org/docs/api-reference/file-conventions/head
*/}
<head />
<body>{children}</body>
</html>
);
}
app/page.tsx
const App = async () => {
console.log("App.js");
const results = await fetch(
`http://api.weatherapi.com/v1/forecast.json?key=1d172d3904e246849d3183628230802&q=Stockholm&days=6&aqi=no&alerts=no`
);
const json = await results.json();
console.log("json", json);
return (
<>
<h3>{json.location.name}</h3>
<p>{json.location.temp_c}</p>
<p>{json.location.localtime}</p>
</>
);
};
export default App;
When visiting either / or /weather, you will see the same results, since the example is implemented in both v12 and v13:
--- OR --- Implementing Fetch via Next.js 12
pages/weather.tsx
async function getData() {
const res = await fetch("/api/getWeather");
console.log("res", res);
// The return value is *not* serialized
// You can return Date, Map, Set, etc.
// Recommendation: handle errors
if (!res.ok) {
// This will activate the closest `error.js` Error Boundary
throw new Error("Failed to fetch data");
}
const json = await res.json();
console.log({ json });
return json;
}
export default async function Page() {
const data = await getData();
console.log("data", data);
return (
<main>
<h3>{data.location.name}</h3>
<p>{data.current.temp_c}</p>
<p>{data.location.localtime}</p>
</main>
);
}
pages/api/getWeather.ts
import { NextApiRequest, NextApiResponse } from "next";
export default async function handler(
req: NextApiRequest,
res: NextApiResponse
) {
const results = await fetch(
`http://api.weatherapi.com/v1/forecast.json?key=1d172d3904e246849d3183628230802&q=Stockholm&days=6&aqi=no&alerts=no`
);
const json = await results.json();
console.log("json", json);
res.status(200).send(json);
}
Remember to revoke your exposed secret API key.
I hope this helps you start building your app. Good luck!
I have read through a couple other posts as well as a few github issues, and I am yet to find a solution. When I logout as one user, and sign in as a different user, the new user will appear for a split second and then be replaced by the previous user's data.
Here is my attempt to go nuclear on the cache:
onClick={() => {
client
.clearStore()
.then(() => client.resetStore())
.then(() => client.cache.reset())
.then(() => client.cache.gc())
.then(() => dispatch(logoutUser))
.then(() => history.push('/'));
}}
I've tried getting the client object from both these locations (I am using codegen):
const { data, loading, error, client } = useUserQuery();
const client = useApolloClient();
Here is my Apollo client setup:
const apolloClient = new ApolloClient({
uri: config.apiUrl,
headers: {
uri: 'http://localhost:4000/graphql',
Authorization: `Bearer ${localStorage.getItem(config.localStorage)}`,
},
cache: new InMemoryCache(),
});
When I login with a new user, I writeQuery to the cache. If I log the data coming back from the login mutation, the data is perfect, exactly what I want to write:
sendLogin({
variables: login,
update: (store, { data }) => {
store.writeQuery({
query: UserDocument,
data: { user: data?.login?.user },
});
},
})
UserDocument is generated from codegen:
export const UserDocument = gql`
query user {
user {
...UserFragment
}
}
${UserFragmentFragmentDoc}`;
Following the docs, I don't understand what my options are, I have tried writeQuery, writeFragment, and cache.modify and nothing changes. The Authentication section seems to suggest the same thing I am trying.
Seems like all I can do is force a window.location.reload() on the user which is ridiculous, there has to be a way.
Ok, part of me feels like a dumb dumb, the other thinks there's some misleading info in the docs.
despite what this link says:
const client = new ApolloClient({
cache,
uri: 'http://localhost:4000/graphql',
headers: {
authorization: localStorage.getItem('token') || '',
'client-name': 'Space Explorer [web]',
'client-version': '1.0.0',
},
...
});
These options are passed into a new HttpLink instance behind the scenes, which ApolloClient is then configured to use.
This doesn't work out of the box. Essentially what is happening is my token is being locked into the apollo provider and never updating, thus the payload that came back successfully updated my cache but then because the token still contained the old userId, the query subscriptions overwrote the new data from the new user's login. This is why refreshing worked, because it forced the client to re-render with my local storage.
The fix was pretty simple:
// headerLink :: base headers for graphql queries
const headerLink = new HttpLink({ uri: 'http://localhost:4000/graphql' });
// setAuthorizationLink :: update headers as localStorage changes
const setAuthorizationLink = setContext((request, previousContext) => {
return {
headers: {
...previousContext.headers,
Authorization: `Bearer ${localStorage.getItem(config.localStorage)}`,
},
};
});
// client :: Apollo GraphQL Client settings
const client = new ApolloClient({
uri: config.apiUrl,
link: setAuthorizationLink.concat(headerLink),
cache: new InMemoryCache(),
});
And in fact, I didn't even need to clear the cache on logout.
Hope this helps others who might be struggling in a similar way.
This seems to be a long lasting issue:
In cypress interface, my application cannot send any graphql request or receive any response. Because it is fetch type.
here is the network status in cypress:
But in normal browser, I actually have several graphql requests, like here:
I know there are already quite several discussions and workarounds, such as using an polyfill to solve this problem such as below:
https://gist.github.com/yagudaev/2ad1ef4a21a2d1cfe0e7d96afc7170bc
Cypress does not intercept GraphQL API calls
but unfortunately, they are not working in my case.
Appreciate to the help of any kinds.
p.s.: I am using cypress 8.3.0, React as the front-end, and using apollo client and apollo server for all graphql stuff.
EDIT:
samele intercept:
cy.intercept('POST', Cypress.env('backendpiUrl') + '/graphql', req => {
if (req.body.operationName === 'updateItem') {
req.alias = 'updateItemMutation';
}
});
sample cypress console:
You can see that all the requests are XHR based, no graphql's fetch request
The links are old, unfetch polyfill is no longer necessary. Since the introduction of cy.intercept(), fetch is able to be waited on, stubbed etc.
Here's the docs Working with GraphQL and an interesting atricle Smart GraphQL Stubbing in Cypress (Note route2 is an early name for intercept)
More up-to-date, posted two days ago bahmutov - todo-graphql-example
Key helper function from this package:
import {
ApolloClient,
InMemoryCache,
HttpLink,
ApolloLink,
concat,
} from '#apollo/client'
// adding custom header with the GraphQL operation name
// https://www.apollographql.com/docs/react/networking/advanced-http-networking/
const operationNameLink = new ApolloLink((operation, forward) => {
operation.setContext(({ headers }) => ({
headers: {
'x-gql-operation-name': operation.operationName,
...headers,
},
}))
return forward(operation)
})
const httpLink = new HttpLink({ uri: 'http://localhost:3000' })
export const client = new ApolloClient({
link: concat(operationNameLink, httpLink),
fetchOptions: {
mode: 'no-cors',
},
cache: new InMemoryCache(),
})
Sample test
describe('GraphQL client', () => {
// make individual GraphQL calls using the app's own client
it('gets all todos (id, title)', () => {
const query = gql`
query listTodos {
# operation name
allTodos {
# fields to pick
id
title
}
}
`
cy.wrap(
client.query({
query,
}),
)
.its('data.allTodos')
.should('have.length.gte', 2)
.its('0')
.should('deep.equal', {
id: todos[0].id,
title: todos[0].title,
__typename: 'Todo',
})
})
Please show your test and the error (or failing intercept).
New to Axios, Vue, NuxtJS.
Most examples I've seen show either .get or await, but not both together. This code was pulled from several using Nuxt JS with headless CMS tutorials and is working, but now I can't seem to figure out how to access the data in other functions outside of the async call.
import axios from 'axios'
export default {
async asyncData ({env, params}) {
const {data} = await axios.get(`${env.cockpit.apiUrl}/collections/get/cat_ruleset?token=${env.cockpit.apiToken}&simple=1`);
return {catrules:data}
}
}
export const addmore = async () => {
const response = await axios.get(`https://jsonplaceholder.typicode.com/users/1`);
return response.data;
}
I have an apollo setup file, services/apollo.js, where I export the client:
const client = new ApolloClient({
cache,
link: ApolloLink.from([stateLink, httpLink])
})
export default client
and I then import that and use it as normal elsewhere:
<BrowserRouter>
<ApolloProvider client={client}>
<App />
</ApolloProvider>
</BrowserRouter>
If I want to use the client directly (for manually firing off a query for example), is it okay to import it directly into the file, rather than accessing it via ApolloConsumer?
import client from 'services/apollo'
export const getSomeData = async () => {
const { data } = await client.query({ ... })
console.log(data)
}
Yup, that should be fine.
This blog post mentions using a singleton for Apollo:
I use a singleton with a unique apollo client to keep a unique cache
and use in all code.
https://cheesecakelabs.com/blog/apollo-graphql-client-makes-api-integration-breeze/