Setup

Basic Setup

Install Dependencies

Add the following to your pubspec.yaml:

dependencies:

ferry: #[latest-version]

gql_http_link: #[latest-version]

dev_dependencies:

ferry_generator: #[latest-version]

build_runner: #[latest-version]

Initialize the Client

This instantiates a client with the default configuration, including a Cache instance that uses a MemoryStore to store data.

import 'package:gql_http_link/gql_http_link.dart';

import 'package:ferry/ferry.dart';

import 'package:<your_pkg>/<path_to_your_schema>__generated__/schema.schema.gql.dart' show possibleTypesMap;

final link = HttpLink("[path/to/endpoint]");

final cache = Cache(possibleTypes: possibleTypesMap);

final client = Client(link: link, cache: cache);

Setup With HiveStore

Ferry includes a HiveStore which enables offline data persistance, based on the hive package.

Install Dependencies

To use the HiveStore, you'll need to add these dependencies to your pubspec.yaml:

dependencies:

ferry: #[latest-version]

gql_http_link: #[latest-version]

hive: #[latest-version]

ferry_hive_store: #[latest-version]

dev_dependencies:

ferry_generator: #[latest-version]

build_runner: #[latest-version]

important

If you're using Flutter, you'll also need to add:

dependencies:

hive_flutter: #[latest-version]

Initialize the Client

import 'package:gql_http_link/gql_http_link.dart';

import 'package:ferry/ferry.dart';

import 'package:ferry_hive_store/ferry_hive_store.dart';

import 'package:hive/hive.dart';

// *** If using flutter ***

// import 'package:hive_flutter/hive_flutter.dart';

Future<Client> initClient() async {

Hive.init('hive_data');

// OR, if using flutter

// await Hive.initFlutter();

final box = await Hive.openBox("graphql");

final store = HiveStore(box);

final cache = Cache(store: store, possibleTypes: possibleTypesMap);

final link = HttpLink('[path/to/endpoint]');

final client = Client(

link: link,

cache: cache,

);

return client;

}