在getServerSideProps函数中访问Apollo客户端的查询功能,需要使用另一种方法而不是在浏览器中使用的常规方法。这是因为getServerSideProps运行在服务器上,而不是在浏览器中。解决这个问题的一种方法是使用GraphQL的fetch功能来访问Apollo客户端的查询功能。以下是一个使用这种方法的示例代码:
import { ApolloClient, ApolloProvider, InMemoryCache, gql } from '@apollo/client';
import { SchemaLink } from '@apollo/client/link/schema';
import { makeExecutableSchema } from '@graphql-tools/schema';
import { useRouter } from 'next/router';
// Defining the executable schema
const typeDefs = `
type Query {
hello: String
}
`;
// Resolving the schema
const resolvers = {
Query: {
hello: () => 'world'
}
};
// Creating the schema
const schema = makeExecutableSchema({ typeDefs, resolvers });
async function getServerSideProps() {
const client = new ApolloClient({
ssrMode: true,
cache: new InMemoryCache(),
link: new SchemaLink({ schema })
});
const { data } = await client.query({
query: gql`
query {
hello
}
`
});
return {
props: {
hello: data.hello
}
}
}
function Hello({ hello }) {
const router = useRouter();
return (
{hello}
);
}
export default function App({ hello }) {
return (
);
}
export { getServerSideProps };