initial commit

README.textile

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+h1. Argonaut is a lightweight JSON builder template handler for Rails
+
+h2. Usage
+
+It's a whole lot like .xml.builder, only it's .json.argonaut.  Make an appropriately named view, like @show.json.argonaut@ and put something in it like:
+
+<pre><code>
+doc.list do |list|
+  list.created_at @list.created_at
+  list.items do |items|
+    for item in @list.items
+      items.item do |item_node|
+        item_node.title item.title
+      end
+    end
+  end
+end
+</code></pre>
+
+And you'll get back some nice JSON.  All of the actual heavy lifting is handled by the json gem.  We're really just building up a big hash with the builder pattern.

init.rb

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+require 'argonaut_template_handler'
+ActionView::Template.register_template_handler :argonaut, ActionView::TemplateHandlers::ArgonautHandler

lib/argonaut.rb

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+require 'json'
+class Argonaut
+  instance_methods.each {|m| undef_method(m) unless %w(__id__ __send__ to_json instance_eval).include?(m.to_s)}
+
+  def initialize(&blk)
+    @hash = {}
+    blk.call(self)
+  end
+
+  def method_missing(key, *values)
+    if block_given?
+      @hash[key] = Argonaut.new {|a| yield a}
+    else
+      @hash[key] = values.size == 1 ? values.first : values
+    end
+  end
+
+  def to_json() @hash.to_json end
+
+  def to_s
+    @hash.to_s
+  end
+
+  def inspect
+    @hash.inspect
+  end
+end

lib/argonaut_template_handler.rb

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+
+require 'argonaut'
+
+module ActionView
+  module TemplateHandlers
+    class ArgonautHandler < TemplateHandler
+      include Compilable
+
+      def self.line_offset() 2 end
+
+      def compile(template)
+        STDOUT.puts 'here'
+        <<-END_RUBY
+          STDOUT.puts 'htere'
+          doc = ::Argonaut.new do |doc|
+            #{template.source}
+          end.to_json
+        END_RUBY
+      end
+
+      def cache_fragment(block, name = {}, options = nil)
+        @view.fragment_for(block, name, options) do
+          eval('doc', block.binding)
+        end
+      end
+    end
+  end
+end
+