acts_as_taggable Plugin issue (not gem)

rubyonrails-talk
1

I tried to post this earlier, but it never came through. I've got something working in console, but not in controller. Any idea why?

This is the plugin not the gem of acts_as_taggable

*View* <code> <h1>Listing elements</h1>

<% if @elements.blank? %>   <p>There are currently no elements in the system tagged <%= "&quot;#{params[:tag_name]}&quot;" %>.</p> <% else %>   <p>Currently tracking <%= @elements.size %> elements in the system tagged <%= "&quot;#{params[:tag_name]}&quot;" %>.</p>

<table>   <tr>   </tr>

    <%= render :partial => 'element', :collection => @elements %>

</table>

<% end %> <br />

<%= link_to 'New element', new_element_path %> </code>

This returns that the array is empty and there's nothing in the tag in http://localhost:3000/elements/tagged/:tag_name

SO teh view is seeing it, but the controller is not getting it. Because in the console, using a string in place of params(:tag_name) returns an actual entry.

*Controller*

<code>   def tagged     # This should take the :tag_name in the url string and pull elements that match     # It does not. I suck as a programmer.     @elements = Element.find_tagged_with(params[:tag_name])

    respond_to do |format|       format.html # index.rhtml       format.xml { render :xml => @elements.to_xml }     end   end </code>

*Models*

<code> class Element < ActiveRecord::Base

  acts_as_taggable   [...] end </code>

*CONSOLE*

This does work: <code> soho:~/Sites/work/koji jathayde$ script/console Loading development environment.

@elements = Element.find_tagged_with("spam")

DEPRECATION WARNING: The :dependent => true option is deprecated and will be removed from Rails 2.0. Please use :dependent => :destroy instead. See Ruby on Rails — A web-app framework that includes everything needed to create database-backed web applications according to the Model-View-Controller (MVC) pattern. for details. See Ruby on Rails — A web-app framework that includes everything needed to create database-backed web applications according to the Model-View-Controller (MVC) pattern. for details. (called from has_many at /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.14.4.5618/lib/active_record/associations.rb:550) => [#<Element:0x330a8d8 @attributes={"name"=>"Koji Test One", "updated_at"=>"2006-11-30 18:16:40", "id"=>"1", "description"=>"supa sexy description", "filename"=>nil, "element_type_id"=>"3", "created_at"=>nil}]

But this does not (because there is no value in params[:tag_list]:

@elements = Element.find_tagged_with(params[:tag_list])

NameError: undefined local variable or method `params' for #<Object:0x1f59f0>         from (irb):4 </code>