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Thread: Undefined Method error for call to 'render_component_as_string'- Why?
Undefined Method error for call to 'render_component_as_string'- Why?
user name
 2006-08-14 19:23:25 

  


  

    I want to put a 'search_box' text_field in the header of each page. ; This common header template is implemented in 'views/layouts/application.rhtml'.

The search_box is implemented in a controller named 'users'.
(so ApplicationController is calling an :action in UserController)


When
I add this line to my 'controllers/application.rb' file, I don't
understand why I get an 'undefined method' error.  After all,  "class
ApplicationController < ActionController::Base".


sbox = render_component_as_string(:controller=>'users', :action=&gt;:search)

This problem was also described in a post to this list 6 months ago:


http://lists.rubyonrails.org/pipermail/rails/2006-February/016759.html

Nobody replied.&nbsp; I corresponded with the February poster, who
points out that render_component_as_string() is 'protected', and suggests that is why
Controller_A can't call an Action in Controller_B. But some folks on
the Site5 forums, as well as the book authors (Dave Thomas, Chad Fowler) claim to make
cross-controller calls.&nbsp; And if cross-controller invocations simply
didn't work, the whole point of Components would be greatly diminished.


I also read this nice 'components' doc
http://manuals.rubyonrails.com/read/chapter/71

...
which does not make it clear if both 'render_component' and
'render_component_as_string' can both be called from either a View or
Controller. &nbsp; I think the doc is saying that either method can be
called from either location.&nbsp; So why is it 'undefined'?



  

  
  
   
     
    

  

    Undefined Method error for call to
'render_component_as_string'- Why?
  


  

     user name

     2006-08-14 21:59:39
  


  

    

  


  

    It seems strange to me that the WEBrick logs shows the pages being produced with back-rev gem libraries - for example, actionpack-1.12.1 instead of 1.12.5.&nbsp; But I do find support for render_component_as_string even in the "...1" version library.&nbsp; So perphaps this is odd, but not the cause of the problem?&nbsp; (I'm running 64-bit CentOS, Rails 
1.1.6)

======================================
NoMethodError (undefined method `render_component_as_string' for ApplicationController:Class):
&nbsp; &nbsp; /app/controllers/application.rb:11
 &nbsp;  /usr/lib64/ruby/gems/1.8/gems/activesupport-
1.3.1/lib/active_support/dependencies.rb:140:in `load'
&nbsp; &nbsp; /usr/lib64/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:56:in `require_or_load'
&nbsp; &nbsp; /usr/lib64/ruby/gems/1.8/gems/activesupport-
1.3.1/lib/active_support/dependencies.rb:30:in `depend_on'
 &nbsp;  /usr/lib64/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:85:in `require_dependency'
  ;  /usr/lib64/ruby/gems/1.8/gems/rails-
1.1.2/lib/dispatcher.rb:69:in `prepare_application'
 &nbsp;  /usr/lib64/ruby/gems/1.8/gems/rails-1.1.2/lib/dispatcher.rb:37:in `dispatch'
 &nbsp;  /usr/lib64/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:115:in `handle_dispatch'

&nbsp; &nbsp; /usr/lib64/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:81:in `service'
  ;  /usr/lib64/ruby/1.8/webrick/httpserver.rb:104:in `service'
  ;  /usr/lib64/ruby/1.8/webrick/httpserver.rb:65:in `run'
&nbsp; &nbsp; /usr/lib64/ruby/1.8/webrick/server.rb:173:in `start_thread'

 ; &nbsp; /usr/lib64/ruby/1.8/webrick/server.rb:162:in `start_thread'
   ; /usr/lib64/ruby/1.8/webrick/server.rb:95:in `start'
&nbsp; &nbsp; /usr/lib64/ruby/1.8/webrick/server.rb:92:in `start'
&nbsp; &nbsp; /usr/lib64/ruby/1.8/webrick/server.rb:23:in `start'

&nbsp;   /usr/lib64/ruby/1.8/webrick/server.rb:82:in `start'
&nbsp; &nbsp; /usr/lib64/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:67:in `dispatch'
 &nbsp;  /usr/lib64/ruby/gems/1.8/gems/rails-1.1.2/lib/commands/servers/webrick.rb:59

 &nbsp;  /usr/lib64/site_ruby/1.8/rubygems/custom_require.rb:21:in `require'
  ;  /usr/lib64/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in `require'
  ;  /usr/lib64/ruby/gems/1.8/gems/rails-
1.1.2/lib/commands/server.rb:30
 &nbsp;  /usr/lib64/site_ruby/1.8/rubygems/custom_require.rb:21:in `require'
  ;  /usr/lib64/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in `require'


 i 08-14 17:55:47 Rendering /usr/lib64/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/templates/rescues/layout.rhtml (500 Internal Error)
=======================================



  

  
  
   
     
    

  

    Undefined Method error for call to
'render_component_as_string'- Why?
  


  

     user name

     2006-08-15 15:18:26
  


  

    

  


  

    I still don't know why WEBrick and Mongrel were so fond of back-rev libs, but running "gem cleanup&quot; got rid of all but the most recent ones.


  

  
  
   
     
    






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