web_app_config
Tools to configure Dart web apps using environment variables.
Example
The example/ directory contains an example project.
When the server runs, it writes a config.json file based on the desired environment variables:
const List<String> supportedKeys = const <String>[
'app_name',
'app_description',
'app_version',
];
Future main() async {
await wconfig.writeConfigFromEnvironment(supportedKeys);
// ...
Then, when the client runs, that configuration can be loaded and parsed into a map:
const List<String> supportedKeys = const <String>[
'app_name',
'app_description',
'app_version',
];
Future main() async {
await wconfig.writeConfigFromEnvironment(supportedKeys);
When app is run in development mode, (pub serve
or webdev serve
) the
configuration is loaded from web/config.yaml
pub build # Dart 2: webdev build
dart bin/server.dart
# observe the app says "name: my awesome app", configured in config.yaml
# stop server
export APP_NAME="i am configured using an env var"
dart bin/server.dart
# observe the app now says "name: i am configured using an env var"
# stop server
unset APP_NAME
dart bin/server.dart
# observe the app says "name: my awesome app" again