[Rails] Re: Re: Re: calling render_to_string outside of controller

[charlie bowman]

> Charlie-
> 
> 	Maybe you can paste a little more code from your plugin? I'm a
> little unclear exactly what you are trying to do. So maybe if you can
> explain the problem you are trying to solve I can help?
> 
> 
> Cheers-
> -Ezra

Ezra,
  Thanks for taking the time to help!

The plugin I'm working on is going to allow me to embed ruby code into a 
blog post and have it executed when it is retrieved or possibly before 
it is saved.  Here is an example of a blog post

the time is <ruby><%= Time.now %></ruby>

The above is currently working with the plugin.  The following will not 
it gives the error I mention above.

Here is my <ruby><%= link_to('link',:controller => 'foo', :action => 
'bar')%></ruby>

The plugin is called acts_as_blog. Here is the code from 
lib/acts_as_blog.rb

require 'active_record'

## Lets create a namespace
module TextConversion
        ## make it acts_as_blog
        module Acts
                module Blog

      def self.included(base)
        base.extend(ClassMethods)
      end

      module ClassMethods
        def acts_as_blog
          class_eval do
            extend TextConversion::Acts::Blog::SingletonMethods
          end
        end
      end

       module SingletonMethods
        def convert_to_html(txt, text_filter, restrictions = [])
                      return "" if txt.blank?
                  return txt if text_filter.blank?

                  text_filter.split.each do |filter|
                  case filter
                  when "markdown":
                          txt = BlueCloth.new(txt, restrictions).to_html
                        when "textile":
                          txt = self.encode_html(txt) if 
restrictions.include?(:filter_html)
                                                        txt = 
execute_ruby_code(txt) unless restrictions.include?(:filter_html)
                          txt = RedCloth.new(txt, 
restrictions).to_html(:textile)
                          txt.gsub!('\n','<br />')
                        when "smartypants":
                   txt = RubyPants.new(txt).to_html
                  end
                        end
                return txt
                end
                                def execute_ruby_code( str )
                                        render_class = 
ActionView::Base.new
                                        logger.error('test')
                                        logger.error(render_class.class)
                                        str = 
str.gsub(/\<ruby\>(.*?)\<\/ruby\>/) do |match|
                                                match = 
render_class.render_template('rhtml',$1)
                                                #logger.error(match)
                                        end
                                        logger.error(str)
                                        str
                                end

                                # Taken from BlueCloth since RedCloth's 
filter_html is broken
                def self.encode_html( str )
                str.gsub!( "<", "&lt;" )
                str.gsub!( ">", "&gt;" )
                str
                end
        # etc...
      end

      end

    end
  end

# reopen ActiveRecord and include all the above to make
# them available to all our models if they want it

ActiveRecord::Base.class_eval do
  include TextConversion::Acts::Blog
end


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