How to do a rest post request using apollo client? - rest

Question

I know that we can also perform rest request using apollo, but I cant figure out how to do a post request, Can someone help me with it?
My REST post request endpoint is: <url>/transaction/getbyhash
Payload:
{"hash":"4e23f9e1d1729996de46fc94d28475b4614f101d72a98f221493f900dc33e0c2"}
Can someone please help me write the same request using apollo client and graphql-tag ?

Answer 1

You can use apollo-link-rest to call REST API inside your GraphQL queries.
E.g.
rest-api-server.ts:
import express from 'express';
import faker from 'faker';
const app = express();
const port = 3000;
app.use(express.json());
app.post('/api/transaction/getbyhash', (req, res) => {
console.log(req.body);
res.json({
email: faker.internet.email(),
name: faker.name.findName(),
});
});
app.listen(port, () => console.log(`HTTP server is listening on http://localhost:${port}`));
client.ts:
import { ApolloClient } from 'apollo-client';
import { RestLink } from 'apollo-link-rest';
import { InMemoryCache } from 'apollo-cache-inmemory';
import gql from 'graphql-tag';
import fetch from 'isomorphic-fetch';
const restLink = new RestLink({
uri: 'http://localhost:3000/api/',
customFetch: fetch,
headers: {
'Content-Type': 'application/json',
},
});
const client = new ApolloClient({
cache: new InMemoryCache(),
link: restLink,
});
const getbyhashQuery = gql`
fragment Payload on REST {
hash: String
}
query Me($input: Payload!) {
person(input: $input) #rest(type: "Person", method: "POST", path: "transaction/getbyhash") {
email
name
}
}
`;
const payload = { hash: '4e23f9e1d1729996de46fc94d28475b4614f101d72a98f221493f900dc33e0c2' };
client.query({ query: getbyhashQuery, variables: { input: payload } }).then((res) => {
console.log(res.data);
});
The logs:
{
person: {
email: 'Bryce34#gmail.com',
name: 'Miss Jaren Senger',
__typename: 'Person'
}
}
package versions:
"apollo-cache-inmemory": "^1.6.6",
"apollo-client": "^2.6.10",
"apollo-link": "^1.2.14",
"apollo-link-rest": "^0.7.3",
"graphql-anywhere": "^4.2.7",
"graphql": "^14.6.0",
"isomorphic-fetch": "^3.0.0",