如何使用phonegap API将文件传输到Rails 3.1服务器？

Question

I'm using phonegap 1.2.0 for a mobile development that aims to upload a file in a remote server which is a rails3.1 application.

I use the FileTransfer in Phonegap API and I do things exactly like in the Phonegap API example but I cannot get the file in rails.

Can anybody tell me how get the file in my rails app ?

Thank you !

Answer 1

I have not done it, but I think you'll have to use the paperclip .

Add this line to your gemfile

gem "paperclip", "~> 2.4"

Then in your Picture model

has_attached_file :image, :styles => { :medium => "150x150>", :thumb => "50x50#" }
 # you don't need the styles, I just put them there so you know you can.

make a migration

class AddImageToPicture < ActiveRecord::Migration
  def self.up
      add_column :picture, :image_file_name, :string 
      add_column :picture, :image_content_type, :string
      add_column :picture, :image_file_size, :integer 
  end

end run the migration.

in you phonegap app you could do.

<form accept-charset="UTF-8" action="/pictures" class="picture_user" enctype="multipart/form-data" id="new_user" method="post">
<input id="user_image" name="user[image]" type="file">
</form>

But there might be a better way to to the form. Not Tested

update you can try this as it is. The key is to send in the right options for paperclip. Make a rails app with paperclip and find the options paperclip sends to the sever from the form. Then add the options to the FileUploadOptions();

var options = new FileUploadOptions();
            options.fileKey="file";
            options.fileName=imageURI.substr(imageURI.lastIndexOf('/')+1);
            options.mimeType="image/jpeg";
            options.params = params;
            var ft = new FileTransfer();
            ft.upload(imageURI, "http://some.server.com/upload.php", win, fail, options);