如何为Flutter中的graph-ql集成设置演示客户端

Question

我对graph-ql不太了解，需要可以运行的演示设置。 我被困住了，不知道如何设置客户端， 谁能解释一下如何在此给定代码中设置客户端：-

https://github.com/zino-app/graphql-flutter/blob/master/example/lib/main.dart

 Client(
        endPoint: 'https://api.github.com/graphql',
        cache: InMemoryCache(),
        apiToken: '<YOUR_GITHUB_PERSONAL_ACCESS_TOKEN>',
      ),

还有什么是ReadRepositories

String readRepositories = """
  query ReadRepositories {
    viewer {
      repositories(last: 50) {
        nodes {
          id
          name
          viewerHasStarred
        }
      }
    }
  }
"""
    .replaceAll('\n', ' ');

Answer 1

static HttpLink httpLink = HttpLink(
    uri: 'https://api.github.com/graphql',
);

final AuthLink authLink = AuthLink(
    getToken: () async => 'Bearer <YOUR_PERSONAL_ACCESS_TOKEN>',
);

final Link link = authLink.concat(httpLink as Link);

  ValueNotifier<GraphQLClient> client = ValueNotifier(
    GraphQLClient(
      cache: InMemoryCache(),
      link: link,
    ),
  );


- For Call query user Query method for GraphQlProvider.

Query(
  options: QueryOptions(
      document: readRepositories, pollInterval: 1),
         builder: (QueryResult result, {VoidCallback refetch}) {
            if (result.loading) {
              return Center(child: CircularProgressIndicator());
             }
             if (result.errors != null) {
               return Text(result.errors.toString());
             }
             if (result.data == null) {
               return Center(child: Text("No Data Found !"));
              }
              // After getting response, return your result 
                return YourWidget();
              },
           ),
       );