add error check method to response; formatting for get() and post() r…

…edo; expose href of request object for clear-view of latest OpenGraph niceness

lib/doesopengraph/graph_request.rb

@@ -7,21 +7,22 @@
 module DoesOpenGraph
   class GraphRequest
 
-    attr_reader :api, :method, :path, :params
+    attr_reader :api, :method, :path, :params, :href
 
     # Build a Request object from its component parts
     def initialize(api, method, path, params={})
       @api = api
       @method = method
       @path = path
       @params = params
+      @href = nil
     end
 
 
     # Perform the request
     def request
       base = @api.access_token ? GraphAPI::HTTPS_GRAPH_ENDPOINT : GraphAPI::HTTP_GRAPH_ENDPOINT
-      href = File.join(base, @path)
+      @href = File.join(base, @path)
 
       if !%w(get post delete).include?(@method.to_s)
         raise InvalidRequestMethod.new("Invalid HTTP method #{@method} passed to request") and return nil
@@ -30,7 +31,7 @@ def request
       params[:access_token] = @api.access_token if @api.access_token
 
       begin
-        response = Typhoeus::Request.send(@method, href, :params=>@params)
+        response = Typhoeus::Request.send(@method, @href, :params=>@params)
         puts "RESPONSE RECEIVED FROM FACEBOOK ON REQUEST TO PATH #{@path}:\n#{response.body}\n\n"
 
         return GraphResponse.new(response.body, self)

lib/doesopengraph/graph_response.rb

@@ -49,6 +49,16 @@ def reload
       return self
     end
 
+    # Is this response an error?
+    def error?
+      keys.include?(:error)
+    end
+
+    # What is the error return from Facebook in this response?
+    def error_message
+      @object.error ? @object.error.message : nil
+    end
+
     # Introspect on the connections available to this node
     def introspect
       raise IncapableOfUpdateMethods.new("Cannot update content without stored request") if request.nil?
@@ -58,9 +68,16 @@ def introspect
     # Get a connection of this node
     def get(connection, params={})
       raise IncapableOfUpdateMethods.new("Cannot update content without stored request") if request.nil?
-      request.api.get(object.id, connection, params={})
+      request.api.get(object.id, connection, params)
     end
 
+    # Post to a connection of this node
+    def post(connection, params={})
+      raise IncapableOfUpdateMethods.new("Cannot update content without stored request") if request.nil?
+      request.api.post(object.id, connection, params)
+    end
+
+
     # Load the next page of the response if paging is available
     def next_page; page("next"); end
     def previous_page; page("previous"); end