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Haunted: useQuery

Apollo useQuery hook for web components.

Demo

import { useQuery, component, html } from '@apollo-elements/haunted';
import { LaunchesQuery } from './Launches.query.graphql.js';
import '@apollo-elements/components/apollo-client';

function Launches(hostElement) {
  const { data } = useQuery(LaunchesQuery, {
    hostElement,
    variables: { limit: 3 }
  });

  const launches = data?.launchesPast ?? [];

  return html`
    %3Clink rel="stylesheet" href="launches.css"/>
    <ol>${launches.map(x => html`
      <li>
        <article>
          <span>${x.mission_name}</span>
          <img .src="${x.links.mission_patch_small}" alt="Badge" role="presentation"/>
        </article>
      </li>`)}
    </ol>
  `;
}

customElements.define('spacex-launches', component(Launches));

Read the query component guides for examples and tips.

useQuery

Parameters

query

ComponentDocument<D, V>

options

ApolloQueryControllerOptions<D, V>
Option Type Description
fetchPolicy WatchQueryFetchPolicy The fetchPolicy for the query.
variables Variables<D, V> Variables for the query.
noAutoSubscribe boolean If true, the element will not begin querying data until you manually call subscribe
shouldSubscribe (op?: Partial<Operation<D, V>>) => boolean Determines whether the element should attempt to subscribe automatically\nOverride to prevent subscribing unless your conditions are met
onData (data: Data<D>) => void Optional callback for when a query resolves.
onError (error: Error) => void Optional callback for when an error occurs.

Inherits from ApolloControllerOptions

Returns

ApolloQueryController<D, V>

Exports

import { useQuery } from '@apollo-elements/haunted/useQuery';