The document outlines the 3 step process for uploading files with Grails: 1) Create an HTML form in the view to select files. 2) Handle the file upload in the controller using MultipartHttpServletRequest. 3) Transfer the uploaded files to the local drive using CommonsMultipartFile, which returns the uploaded file. It then provides a real world example of allowing users to upload an avatar image to their profile.

1. Uploading Files
with Grails

2. Grails.org/File+Upload
Step 1. Create the form in the view

3. Grails.org/File+Upload
Step 2. Handle the upload in the controller
MultipartHttpServletRequest

4. Grails.org/File+Upload
Step 3. Transfer files to your local drive

5. Grails.org/File+Upload
Step 3. Transfer files to your local drive
returns org.springframework.web.multipart.commons.CommonsMultipartFile

6. Real World Example
Create the ability for a user to
upload their avatar to their profile.

7. Real World Example
Create the ability for a user to
upload their avatar to their profile.
1. Create a new Grails
application ‘FileUploader’
2. Create a new Domain
Class ‘User’
3. Generate Controller/
Views for User

9. $ grails generate-all berry.User

13. FileUploadService.groovy

17. http://github.com/cavneb/FileUploader