Rails - Jul 2008 - attachment_fu and polymorphism. Two models in one form.

Hi!

I just discover attachment_fu a few days ago.
I made it work in a simple form.

Now I want to use a polymorphic relation.
I want to attach a picture to a ''association'' in the
''association'' form.

Models:
-----------------

class Association < ActiveRecord::Base
  has_one :image, :as => :attachable, :dependent => :destroy
end

class Image < ActiveRecord::Base

  belongs_to :attachable, :polymorphic => true

  has_attachment :content_type => :image,
                 :storage => :file_system,
                 :max_size => 500.kilobytes,
                 :resize_to => ''320x200'',
                 :thumbnails => { :thumb => [50,50] },
                 :processor => :Rmagick

  validates_as_attachment

end

The controller:
---------------

[code=]def new
    @association = Association.new
  end

  def create
    @association = Association.new(params[:association])
    image = @association.create_image(params[:image])
    if @association.save and image.save
      flash[:notice] = ''Association was successfully created.''
      redirect_to :action => ''list''
    else
      render :action => ''new''
    end
  end

The view:
-------------------

<h1>Création d''une nouvelle association</h1>

<% form_tag :action => ''create'' do %>

        <%= error_messages_for :association %>
        <%= error_messages_for :image %>

  <p><label
for="association_nom">Nom</label><br/>
  <%= text_field ''association'', ''nom'' 
%></p>

        <p><label for="association_description">Contenu de
la
page:</label><br/>
        <%= text_area ''association'',
''description''  %></p>

        <%= file_field ''image'', :uploaded_data %>

  <%= submit_tag "Create" %>

<% end %>

<%= link_to ''Back'', :action => ''list''
%>

But I get the error:
undefined method `content_type'' for "2083186.jpg":String

I don''t understand how i can fix this.

Thanxs !
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

On 17 Jul 2008, at 12:36, Achille Pinson wrote:
> <% form_tag :action => ''create'' do %>
>
>        <%= error_messages_for :association %>
>        <%= error_messages_for :image %>
>
>  <p><label
for="association_nom">Nom</label><br/>
>  <%= text_field ''association'', ''nom''
%></p>
>
>        <p><label
for="association_description">Contenu de la
> page:</label><br/>
>        <%= text_area ''association'',
''description''  %></p>
>
>        <%= file_field ''image'', :uploaded_data %>
>
>  <%= submit_tag "Create" %>
>
> <% end %>
>
> <%= link_to ''Back'', :action =>
''list'' %>
>
> But I get the error:
> undefined method `content_type'' for "2083186.jpg":String
>
> I don''t understand how i can fix this.
File uploads need a multipart form:

<% form_tag :action => ''create'', :html => {:multipart
=> true} do %>

This is clearly stated on line 115 of the attachment_fu README.


Best regards

Peter De Berdt


--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---