"how to" show link to uploaded pdf file - newbie

rubyonrails-talk
1

Working with "attachment_fu" and have successfully uploaded a PDF file via a form. (File is located in /public/uploads/ )

I am having trouble "showing" the link to the file in the show page - could someone show me some example code for the controller, model,view etc... ? The goal is to have a link to a PDF file associated with a blog entry. Many thanks

2

Is it already linked to a post in the models? (pdf_file belongs_to :post, post :has_one pdf_file)

of so, you can write...

post.pdf_file.public_filename

..to get the path to the uploaded file

3

Peter wrote:

Is it already linked to a post in the models? (pdf_file belongs_to :post, post :has_one pdf_file)

of so, you can write...

post.pdf_file.public_filename

..to get the path to the uploaded file

On Mar 24, 8:50 pm, Liam Smith <rails-mailing-l...@andreas-s.net>

Here's the result (show.rhtml) of the code that I am trying to use. Unfortunately it just shows the text string of the path and not the link to the actual file.

............. (localhost:3000/messages/12)

Title

Summary

Uploaded File : /uploads/0000/0010/test.pdf

Body text

.............

And here is the actual code.....

controller =

class MessagesController < ApplicationController

def index     @title = "Messages"     @messages = Messages.find(:all)

  end

  def create     #Create the message     @message = Message.new(params[:message])     respond_to do |format|       if @message.save

        if !params[:upload][:uploaded_data].blank?           @message.upload = Upload.create(params[:upload])         end         flash[:notice] = 'File was successfully uploaded.'         format.html { redirect_to :action=>'show', :id=>@message }       else         format.html { render :action => "new" }       end     end   end

  def show     @message = Message.find(params[:id])

    respond_to do |format|       format.html # show.rhtml       format.xml { render :xml => @message.to_xml }     end   end

  def update       @message = Message.find(params[:id])       respond_to do |format|         if @message.update_attributes(params[:message])

          if !params[:upload][:uploaded_data].blank?             #find current upload             @upload = @message.upload ||= Upload.new             @upload = @message.upload.build(params[:upload])             @upload.save           end           format.html { redirect_to :action=>'show', :id=>@message }         else           format.html { render :action => "edit" }         end       end     end

end

..........

message model =

class Message < ActiveRecord::Base   has_one :upload, :conditions => 'parent_id is null'   has_one :all_uploads, :class_name => 'Upload' # all attachments end

4

showing the link is the problem?

<%= link_to 'Download', uploaded_file_path %>

5

Peter wrote:

showing the link is the problem?

<%= link_to 'Download', uploaded_file_path %>

On Mar 24, 10:20 pm, Liam Smith <rails-mailing-l...@andreas-s.net>

Yes, I am not understanding (sorry about this!) - how to code the "uploaded_file_path" - how do I define this/where do I define this, etc...?

6

that should be:

message.upload.public_filename

where message can be some message you find with Message.find params[:id]

7

Peter wrote:

that should be:

message.upload.public_filename

where message can be some message you find with Message.find params[:id]

On Mar 25, 12:16 am, Liam Smith <rails-mailing-l...@andreas-s.net>

FANTASTIC - THANK YOU for your help - very much appreciated!