Rails - Jan 2006 - File_column not keeping value during page reloads

I''m trying to use the file_column plug-in to attach a file to a 
newsletter posting. It works fine if I get the form right the first 
time, but if I get an error, such as not typing in a required field, and 
the form re-displays, my file selection box reverts to "no file
selected."

Here''s my relevant controller code:

  def new
    @newsletterpost = Newsletterpost.new
  end
 
  def add_post
      @newsletterpost = Newsletterpost.new(params[:newsletterpost])
      @newsletterpost.user_id = @session[:user].id
      if @newsletterpost.save   
          flash[:notice] = "Newsletter posting was successfully
created."
          redirect_to :action => ''list''
      else
          render :action => ''new''
      end
  end

And the relevant section from my _form.rhtml file:

    <label
for=''newsletterpost_filename''>Attachment:</label><br/>
    <%= file_column_field ''newsletterpost'',
''filename'' %> <br /><br />

And my newsletterpost model:

class Newsletterpost < ActiveRecord::Base
  belongs_to :user
  belongs_to :newslettercategory
  file_column :filename
  validates_presence_of :title
end



Any suggestions? Thanks!!

On 1/22/06, Dylan Markow <dylan@dylanmarkow.com>
wrote:
> I''m trying to use the file_column plug-in to attach a file to a
> newsletter posting. It works fine if I get the form right the first
> time, but if I get an error, such as not typing in a required field, and
> the form re-displays, my file selection box reverts to "no file
selected."
>
> Here''s my relevant controller code:
>
>   def new
>     @newsletterpost = Newsletterpost.new
>   end
>
>   def add_post
>       @newsletterpost = Newsletterpost.new(params[:newsletterpost])
>       @newsletterpost.user_id = @session[:user].id
>       if @newsletterpost.save
>           flash[:notice] = "Newsletter posting was successfully
created."
>           redirect_to :action => ''list''
>       else
>           render :action => ''new''
>       end
>   end
>
> And the relevant section from my _form.rhtml file:
>
>     <label
for=''newsletterpost_filename''>Attachment:</label><br/>
>     <%= file_column_field ''newsletterpost'',
''filename'' %> <br /><br />
>
> And my newsletterpost model:
>
> class Newsletterpost < ActiveRecord::Base
>   belongs_to :user
>   belongs_to :newslettercategory
>   file_column :filename
>   validates_presence_of :title
> end
>
>
>
> Any suggestions? Thanks!!
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
The file is prolly just being stored in the filename hidden field.  I
have found it useful to add some sort of notice beneath the
file_column_field to tell the user what is currently stored, because
the file_column_field definitely doesn''t do that.  Something like:

<%=File.basename(@model.filename.to_s)%>

--
Kyle Maxwell
Chief Technologist
E Factor Media // FN Interactive
kyle@efactormedia.com
1-866-263-3261

On 1/22/06, Dylan Markow <dylan@dylanmarkow.com>
wrote:
> I''m trying to use the file_column plug-in to attach a file to a
> newsletter posting. It works fine if I get the form right the first
> time, but if I get an error, such as not typing in a required field, and
> the form re-displays, my file selection box reverts to "no file
selected."
you can''t do anything against this as pre-filling a file selection box
with a custom value would create quite a security issue. So you have
to create your own indication that a file has been uploaded, as Kyle
suggested.

Sebastian