Define/Modify default API Gateway responses

[mbsimonovic]

Feature request: a way to modify the default API Gateway response templates.

Use Case

I'd like to add validation errors in the API response, by modifying the BAD_REQUEST_BODY template to return validation errors:

{ 
  "message":$context.error.messageString, 
  "validationErrors":"$context.error.validationErrorString" 
}

Proposed Solution

Ideally thru the RestApiProps:

new apigateway.RestApi(this, 'apigw', {
 responseTemplates: { 
    apigateway.ResponseTypes.BAD_REQUEST_BODY: {
      'application/json': '{"message":$context.error.messageString,"validationErrors":"$context.error.validationErrorString"}'
    }
 }
}

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This is a 🚀 Feature Request

[nija-at]

Thanks for filing this issue.

The AWS::ApiGateway::GatewayResponse needs to be implemented to support this.