Link_to_remote object missing

Rails
1

Hello, I’m in troubles trying to use ‘link_to_remote’ on Rails 2.1.
Having this page:

Editing project

<% form_for(:project, :url => project_path(@project), :html => { :method => :put }) do |f| %>

Name <%= f.text_field :name %> Date <%= calendar_date_select :project, :target_date, :time => false %> <%= image_submit_tag('accept.png', :alt => "Update", :class => 'icon') %> <%= link_to_remote image_tag('cross.png', :alt => 'Cancel'), :url => cancel_edit_project_path, :method => :get %>

<% end %> <% form_remote_for(:project, :url => add_contributor_project_path(@project), :html => { :method => :put }) do |f| %>

Contributors

Add contributor <%= text_field_tag 'contributor' %> <%= image_submit_tag('add.png', :class => 'icon') %> <% end %> <%= render :partial => 'contributors', :object => @project %>

And the contributors partial:

    <% for contributor in @project.contributors %>
  • <% link_to_remote image_tag('delete.png', :size => '16x16', :alt => 'Destroy'),

    delete_contributor_project_path(@project),
    :method => :put, :contributor_id =>
    contributor.id %>
    <%= contributor.user.name %>


    • <% end %>

I get this error:

ActionView::TemplateError (You have a nil object when you didn’t
expect it!
You might have expected an instance of ActiveRecord::Base.
The error occurred while evaluating nil.[]) on line #4 of projects/
_contributors.html.erb:
1:


    2: <% for contributor in @project.contributors %>
    3:

  • 4: <% link_to_remote image_tag(‘delete.png’, :size =>
    ‘16x16’, :alt => ‘Destroy’),
    5:
    delete_contributor_project_path(params[:project_id]),
    6: :method => :put, :contributor_id =>
    contributor.id %>
    7: <%= contributor.user.name %> 
    /usr/lib64/ruby/gems/1.8/gems/actionpack-2.1.0/lib/

    action_controller/url_rewriter.rb:102:in rewrite_url' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.1.0/lib/ action_controller/url_rewriter.rb:88:inrewrite’
    /usr/lib64/ruby/gems/1.8/gems/actionpack-2.1.0/lib/
    action_controller/base.rb:621:in url_for' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_view/ helpers/url_helper.rb:76:insend’
    /usr/lib64/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_view/
    helpers/url_helper.rb:76:in url_for' /usr/lib64/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_view/ helpers/prototype_helper.rb:461:inremote_function’
    /usr/lib64/ruby/gems/1.8/gems/actionpack-2.1.0/lib/action_view/
    helpers/prototype_helper.rb:255:in link_to_remote' app/views/projects/_contributors.html.erb:4:in_run_erb_47app47views47projects47_contributors46html46erb’

    changing link_to_remote by link_to the partial renders fine, but
    that’s not what I want. What’s the problem using link_to_remote in
    this context?, Which is the missing object?, if @project was nil the
    error would be at line 2, but it isn’t.