Fetch data
GET requests
To make a GET request use Amplify.API.get
:
1Future<void> getTodo() async {2 try {3 final restOperation = Amplify.API.get('todo');4 final response = await restOperation.response;5 print('GET call succeeded: ${response.decodeBody()}');6 } on ApiException catch (e) {7 print('GET call failed: $e');8 }9}
Accessing query parameters & body in Lambda proxy function
To learn more about Lambda Proxy Integration, please visit Amazon API Gateway Developer Guide.
If you are using a REST API which is generated with Amplify CLI, your backend is created with Lambda Proxy Integration, and you can access your query parameters & body within your Lambda function via the event object:
1exports.handler = function(event, context, callback) {2 console.log(event.queryStringParameters);3 console.log('body: ', event.body);4}
In case you do not have it already, alternatively, you can update your backend file which is located at amplify/backend/function/[your-lambda-function]/src/app.js
with the middleware:
1const awsServerlessExpressMiddleware = require('aws-serverless-express/middleware');2app.use(awsServerlessExpressMiddleware.eventContext());
Accessing Query Parameters with Serverless Express
In your request handler use req.apiGateway.event
or req.query
:
1app.get('/todo', function(req, res) {2 const query = req.query;3 // or4 // const query = req.apiGateway.event.queryStringParameters5 res.json({6 event: req.apiGateway.event, // to view all event data7 query: query8 });9});
Then you can use query parameters in your path as follows:
1Future<void> getTodo() async {2 try {3 final restOperation = Amplify.API.get(4 'todo',5 queryParameters: {'q': 'test'},6 );7 final response = await restOperation.response;8 print('GET call succeeded: ${response.decodeBody()}');9 } on ApiException catch (e) {10 print('GET call failed: $e');11 }12}