serverless-form-api-post-method.yml

  FormDataPOSTApi:
    Type: AWS::ApiGateway::Method
    Properties:
      AuthorizationType: NONE
      HttpMethod: POST
      
      ResourceId: !Ref FormDataResource
      RestApiId: !Ref APIGW
      
      RequestModels:
        application/json: !Ref FormDataInputModel

      RequestParameters:
        method.request.header.Content-Type: true

      RequestValidatorId: !Ref FormDataRequestValidator

      Integration:
        Type: AWS
        
        Credentials: !GetAtt APIGWRole.Arn
        
        Uri: !Sub arn:aws:apigateway:${AWS::Region}:dynamodb:action/PutItem
        IntegrationHttpMethod: POST
        
        PassthroughBehavior: WHEN_NO_TEMPLATES

        RequestParameters:
          integration.request.header.Content-Type: method.request.header.Content-Type

        RequestTemplates:
          application/json: |
            #set($inputRoot = $input.path('$'))
            {
                "TableName": "intention",
                "Item": {
                    "email": {
                        "S": "$inputRoot.email"
                    },
                    "fullName": {
                        "S": "$inputRoot.fullName"
                    },
                    "comment": {
                        "S": "$inputRoot.comment"
                    },
                    "stage": {
                        "S": "$context.stage"
                    },
                    "createdAt": {
                        "S": "$context.requestTimeEpoch"
                    }
                },
                "ConditionExpression": "email <> :e",
                "ExpressionAttributeValues": {
                    ":e": {"S": "$inputRoot.email"}
                }
            }
          application/x-www-form-urlencoded: |
            #set( $email = '' )
            #set( $fullName = '' )
            #set( $comment = '' )
            #foreach( $token in $input.path('$').split('&') )
                #set( $keyVal = $token.split('=') )
                #set( $keyValSize = $keyVal.size() )
                #if( $keyValSize >= 1 )
                    #set( $key = $util.urlDecode($keyVal[0]) )
                    #if( $keyValSize >= 2 )
                        #set( $val = $util.urlDecode($keyVal[1]) )
                    #else
                        #set( $val = '' )
                    #end

                    #if( $key == 'email' )
                      #set( $email = $val )
                    #elseif( $key == 'fullName' )
                      #set( $fullName = $val )
                    #elseif( $key == 'comment' )
                      #set( $comment = $val )
                    #end
                #end
            #end
            {
                "TableName": "intention",
                "Item": {
                    "email": {
                        "S": "$email"
                    },
                    "fullName": {
                        "S": "$fullName"
                    },
                    "comment": {
                        "S": "$comment"
                    },
                    "stage": {
                        "S": "$context.stage"
                    },
                    "createdAt": {
                        "S": "$context.requestTimeEpoch"
                    }
                },
                "ConditionExpression": "email <> :e",
                "ExpressionAttributeValues": {
                    ":e": {"S": "$email"}
                }
            }
        IntegrationResponses:
          - StatusCode: 200
            SelectionPattern: 2\d{2}
            ResponseParameters:
              method.response.header.Access-Control-Allow-Headers: "'Content-Type,Authorization,X-Amz-Date,X-Api-Key,X-Amz-Security-Token'"
              method.response.header.Access-Control-Allow-Methods: "'DELETE,GET,HEAD,OPTIONS,PATCH,POST,PUT'"
              method.response.header.Access-Control-Allow-Origin: "'*'"
            ResponseTemplates:
              application/json: |
                {"message": "Thank you! We will keep you posted!", "statusCode": 200}
          - StatusCode: 500
            ResponseParameters:
              method.response.header.Access-Control-Allow-Headers: "'Content-Type,Authorization,X-Amz-Date,X-Api-Key,X-Amz-Security-Token'"
              method.response.header.Access-Control-Allow-Methods: "'DELETE,GET,HEAD,OPTIONS,PATCH,POST,PUT'"
              method.response.header.Access-Control-Allow-Origin: "'*'"
            ResponseTemplates:
              application/json: |
                {"message": "Oops! Something went wrong :(", "statusCode": 500}

      MethodResponses:
        - StatusCode: 200
          ResponseParameters:
            method.response.header.Access-Control-Allow-Headers: true
            method.response.header.Access-Control-Allow-Methods: true
            method.response.header.Access-Control-Allow-Origin: true
          ResponseModels:
            application/json: !Ref FormDataOutputModel
        - StatusCode: 500
          ResponseParameters:
            method.response.header.Access-Control-Allow-Headers: true
            method.response.header.Access-Control-Allow-Methods: true
            method.response.header.Access-Control-Allow-Origin: true
          ResponseModels:
            application/json: !Ref FormDataOutputModel