From: David Trasbo <davidtrasbo@...>
Date: 2008-10-18T02:32:39+09:00
Subject: Re: A Ruby block question

David A. Black wrote:

>> ... but how is this solved?
> 
> Try this:
> 
>    fields_for_setting(namespace, name) do |f|
>      f.label :value, label, :index => nil, :for => id+"value" +
>      f.text_field :value, :index => nil, :id => id+"value"
>    end
> 
> i.e., returning a string from the block.

syntax error, unexpected tSYMBEG, expecting kEND

But I grabbed your concept, this actually works:

def fields_for_setting(namespace, name)
  output = ""
  id = "settings_#{namespace}_#{name}_"
  m = Builder::XmlMarkup.new(:indent => 2, :target => output)
  fields_for "settings[]", setting = 
Setting.find_or_initialize_by_namespace_and_name(namespace, name) do |f|
    m.p do
      unless setting.new_record?
        m << f.hidden_field(:id, :index => nil, :id => id+"id")
      end
      m << f.hidden_field(:namespace, :index => nil, :id => 
id+"namespace")
      m << f.hidden_field(:name, :index => nil, :id => id+"name")
      m << yield(f)
    end
  end
  puts output
end

def text_field_for_setting(namespace, name, label=nil)
  namespace = namespace.to_s
  name = name.to_s
  label ||= "#{namespace.capitalize} #{name}"
  id = "settings_#{namespace}_#{name}_"
  fields_for_setting(namespace, name) do |f|
    o = f.label(:value, label, :index => nil, :for => id+"value")
    o << f.text_field(:value, :index => nil, :id => id+"value")
  end
end

But, come on! There must be a better solution. This doesn't seem very 
idiomatic to me. Nobody got a better idea?
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