Integrate /users/{userId} - PATCH method with update-user

1. Go back to the Resources section of the UsersAPI API in API Gateway console.
2. Select /users/{userId} resource.
3. Click Create method.

4. In the Create method page - Method details section:
   • Method type: Select UPDATE.
   • Integration type: Keep Lambda function.
   • Lambda function: Choose the update-user function.

5. Keep other settings as default.

   • Scroll to the bottom and click Create method.

6. You will be redirect to the detail of the /users/{userId} - PATCH method.

7. Open the Integration request tab.
8. In the Integration request settings section, click Edit.

9. In the Edit integration request page, expand the URL path parameters section:
   • Click Add path parameter.
   • Name: Fill in userId.
   • Mapped from: Fill in method.request.path.userId.

10. Expand the Mapping templates section:

    • Click Add mapping template.

    • Content type: Fill in application/json.

    • Template body: Fill in:

      ## Parse the request body into a JSON object
      #set($inputRoot = $input.path('$'))
      {
        #foreach($key in $inputRoot.keySet())
          "$key": "$util.escapeJavaScript($inputRoot.get($key))"#if($foreach.hasNext),#end
        #end,
        "id": "$input.params('userId')"
      }
      

11. Scroll to the bottom, click Save.