Apollo GraphQL React - how to query on click?
As of version 3.0, you can do this in two ways now.
client.query
The first way is to call ApolloClient
's query
method. This returns a Promise that will resolve to the query's result. You can get a reference to the client by using the withApollo HOC:
class MyComponent extends React.Component {
handleClick() {
const { data } = await this.props.client.query({
query: gql`...`,
variables: { ... },
})
...
}
...
}
withApollo(MyComponent)
Alternatively, you can also use ApolloConsumer to get the client:
const MyComponent = () => (
<ApolloConsumer>
{client => {
...
}
</ApolloConsumer>
)
or the useApolloClient hook:
const MyComponent = () => {
const client = useApolloClient()
...
}
useLazyQuery
The second way is to use the useLazyQuery hook:
const MyComponent = () => {
const [runQuery, { called, loading, data }] = useLazyQuery(gql`...`)
const handleClick = () => runQuery({ variables: { ... } })
...
}
You can do it by passing a reference to Apollo Client using the withApollo
higher-order-component, as documented here: https://www.apollographql.com/docs/react/api/react-apollo.html#withApollo
Then, you can call client.query
on the passed in object, like so:
class MyComponent extends React.Component {
runQuery() {
this.props.client.query({
query: gql`...`,
variables: { ... },
});
}
render() { ... }
}
withApollo(MyComponent);
Out of curiosity, what's the goal of running a query on a click event? Perhaps there is a better way to accomplish the underlying goal.