remote data sources and indifferent access. closes #44

lib/middleman/features/data.rb

@@ -1,8 +1,11 @@
 require "yaml"
+require "httparty"
+require "thor"
 
 module Middleman::Features::Data
   class << self
     def registered(app)
+      app.extend ClassMethods
       app.helpers Middleman::Features::Data::Helpers
     end
     alias :included :registered
@@ -20,11 +23,57 @@ module Middleman::Features::Data
     end
     
     def method_missing(path)
+      response = nil
+      
+      @@remote_sources ||= {}
+      if @@remote_sources.has_key?(path.to_s)
+        response = HTTParty.get(@@remote_sources[path.to_s]).parsed_response
+      end
+      
       file_path = File.join(@app.class.root, "data", "#{path}.yml")      
       if File.exists? file_path
-        return YAML.load_file(file_path)
+        response = YAML.load_file(file_path)
+      end
+      
+      if response
+        recursively_enhance(response)
+      end
+    end
+    
+    def self.add_source(name, json_url)
+      @@remote_sources ||= {}
+      @@remote_sources[name.to_s] = json_url
+    end
+  
+  private
+    def recursively_enhance(data)
+      if data.is_a? Hash
+        data = Thor::CoreExt::HashWithIndifferentAccess.new(data)
+        data.each do |key, val|
+          data[key] = recursively_enhance(val)
+        end
+        data
+      elsif data.is_a? Array
+        data.each_with_index do |val, i|
+          data[i] = recursively_enhance(val)
+        end
+        data
+      else
+        data
       end
     end
   end
   
+  module ClassMethods
+    # Makes HTTP json data available in the data object
+    #
+    #     data_source :my_json, "http://my/file.json"
+    #
+    # Available in templates as:
+    #
+    #     data.my_json
+    def data_source(name, url)
+      Middleman::Features::Data::DataObject.add_source(name, url)
+    end
+  end
 end

middleman.gemspec

@@ -35,6 +35,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency("sass", ["~> 3.1.0"])
   s.add_runtime_dependency("compass", ["~> 0.11.1"])
   s.add_runtime_dependency("coffee-script", ["~> 2.1.0"])
+  s.add_runtime_dependency("httparty", ["~> 0.7.0"])
   # s.add_runtime_dependency("fssm", ["~> 0.2.0"])
   s.add_development_dependency("cucumber", ["~> 0.10.0"])
   s.add_development_dependency("rspec", [">= 0"])