uploading a file in grails

Question

I am trying to upload a file in grails in my gsp I have:

Answer 1

In order to upload a file you must set the enctype on the form. To do so you can make use of the which is identical to the standard form tag except that it sets the enctype attribute to "multipart/form-data" automatically.

I prefer to make use of the Grails Selfie Plugin an Image / File Upload Plugin to attach files to your domain models, upload to a CDN, validate content, or produce thumbnails.

Domain

import com.bertramlabs.plugins.selfie.Attachment

class Book {
   String name
   Attachment photo

   static attachmentOptions = [
       photo: [
           styles: [
              thumb: [width: 50, height: 50, mode: 'fit'],
              medium: [width: 250, height: 250, mode: 'scale']
          ]
       ]
   ]

   static embedded = ['photo'] //required

   static constraints = {
      photo contentType: ['image/jpeg','image/png'], fileSize:1024*1024 // 1mb
   }
}

GSP

Controller

class PhotoController {
   def upload() {
      def photo = new Photo(params)
      if(!photo.save()) {
         println "Error Saving! ${photo.errors.allErrors}"
      }
      redirect view: "index"
   }
}

Sources

1. uploadFrom

2. selfie plugin