Add header to all apollo query - vue.js

Question

As the title suggest, I am trying to add a header to all queries and mutations made by apollo. I know I can do
context: {
headers: {
'Accept-Language': $this.i18n.current;
}
}
but that is only for one query or mutation. I am using nuxt with vue and my current nuxt.config.js is as follows
apollo: {
clientConfigs: {
default: '~/plugins/apollo-config.js'
},
defaultOptions: {
$query: {
fetchPolicy: 'network-only',
context: { // does not work
headers: {
"Accept-Language": $this.i18n.current, // not sure if this works as it is in config
}
}
}
},
errorHandler: '~/plugins/apollo-error-handler.js'
},
I'm pretty sure I'm using context wrong in this case but not sure how else I should do it. Any help would be very much appreciated.

Answer 1

I'm not at all a professional regarding GraphQL but last year, I've achieved something that works well (with a JWT header), here is what I had back at the time
nuxt.config.js
apollo: {
clientConfigs: {
default: '#/plugins/nuxt-apollo-config.js',
},
defaultOptions: {
$query: {
loadingKey: 'loading',
fetchPolicy: 'network-only',
},
},
authenticationType: 'Bearer',
},
and here is my
nuxt-apollo-config.js file
import { setContext } from 'apollo-link-context'
import { from } from 'apollo-link'
import { InMemoryCache, IntrospectionFragmentMatcher } from 'apollo-cache-inmemory'
import { createHttpLink } from '#apollo/client/core'
import schema from '../apollo/schema.json'
const fragmentMatcher = new IntrospectionFragmentMatcher({
introspectionQueryResultData: schema,
})
export default ({ app, $config: { baseUrlGraphql } }) => {
const headersConfig = setContext(() => ({
credentials: 'same-origin',
headers: {
Authorization: app.$cookies.get('auth._token.local'),
'x-company-id': app.$cookies.get('company_id'),
},
}))
const cache = new InMemoryCache({ fragmentMatcher, resultCaching: false })
return {
defaultHttpLink: false,
link: from([
headersConfig,
createHttpLink({
credentials: 'include',
uri: baseUrlGraphql,
fetch: (uri, options) => {
return fetch(uri, options)
},
}),
]),
cache,
}
}
import { setContext } from 'apollo-link-context' worked well for me. I'm not sure that it's the best because there is maybe something baked-in right now but this one worked for me last year.