Rails - Mar 2008 - how to upload multiple images with file_column + rmagick

how to upload multiple images with file_column + rmagick in one form?
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I have done this before using file_column, but have since switched to
attachment_fu.  The process should be about the same though.  First
off, these links will probably help alot.

http://the-stickman.com/web-development/javascript/upload-multiple-files-with-a-single-file-element/
http://www.silverscripting.com/blog/2007/12/18/multiple-file-upload-with-rails-file_column-plugin-and-mootools/

They both deal with mootools, to make multiple image uploads a bit
snazzier rather than limiting to so many files per form (or littering
your page with a mess of file fields).  If you don''t want to use the
snazzy javascripts, then just create your fields and name them
something like ''attachments[]''  so that the files get pushed
into an
array that rails can use like ''params[:attachments]''

As for the controller, mine looks like this (again I''m using
attachment_fu, but it should be identical)

  def create
    @picture = @item.pictures.build(params[:picture])
    @pictures = @item.pictures.find(:all)

    unsaved_pictures = []
    saved_pictures = []
    params[:attachments] ||= []
    params[:attachments].each do |file|
      @picture = @item.pictures.build({:uploaded_data => file}) unless
file == ""
      unsaved_pictures << @picture.filename unless @picture.save
      saved_pictures << @picture.filename if @picture.save
    end

    if saved_pictures.blank?
      flash[:error] = "No Pictures were added."
    else
      if saved_pictures.size < 2
        flash[:notice] = "Picture was successfully added.
(#{saved_pictures[0]})"
      else
        flash[:notice] = "Pictures were successfully added.
(#{saved_pictures.join('', '')})"
      end
    end

    unless unsaved_pictures.blank?
      if unsaved_pictures.size < 2
        flash[:error] = "File was not added. (#{unsaved_pictures[0]})"
      else
        flash[:error] = "Files were not added.
(#{unsaved_pictures.join('', '')})"
      end
    end

    respond_to do |format|
      format.html { redirect_to(item_pictures_url) }
    end
  end

The first to lines should be familiar, then I create empty arrays,
saved_pictures and unsaved_pictures so that I can report stuff back to
the user later.  Then I iterate through the attachments making sure
the file field wasn''t empty ( I probably should have used file.empty?
instead of file == "" there).  If the picture wasn''t saved I
store the
name into my unsaved_pictures array, if it was I store the filename in
saved_puctures array.  Then I just use flash to send out notices and
errors depending on what was/wasn''t saved and proper pluralization.

Hope this helps get you going in the right direction.

On a side note if anyone has any suggestions on where I can make this
code better, please do tell me :D  The method is a bit beefy and there
are singular/plural flash notices doesn''t seem to dry.

Also has anyone used Paperclip for file attachments yet? If so, how is
it?

On Mar 28, 11:59 pm, Shih Tony
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> how to upload multiple images with file_column + rmagick in one form?
> --
> Posted viahttp://www.ruby-forum.com/.
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