on the road toward design docs

lib/couchrest/core/document.rb

@@ -15,11 +15,69 @@ module CouchRest
   
   class Document < Response
 
-  end
-  
-  class Design < Document
+    attr_accessor :database
+
+    # alias for self['_id']
+    def id
+      self['_id']
+    end
+
+    # alias for self['_rev']      
+    def rev
+      self['_rev']
+    end
+
+    # returns true if the document has never been saved
+    def new_record?
+      !rev
+    end
+
+    # Saves the document to the db using create or update. Also runs the :save
+    # callbacks. Sets the <tt>_id</tt> and <tt>_rev</tt> fields based on
+    # CouchDB's response.
+    def save
+      raise ArgumentError, "doc.database required for saving" unless database
+      if new_record?
+        create
+      else
+        update
+      end
+    end
+
+    # Deletes the document from the database. Runs the :delete callbacks.
+    # Removes the <tt>_id</tt> and <tt>_rev</tt> fields, preparing the
+    # document to be saved to a new <tt>_id</tt>.
+    def destroy
+      result = database.delete self
+      if result['ok']
+        self['_rev'] = nil
+        self['_id'] = nil
+      end
+      result['ok']
+    end
+
+    protected
+
+    # Saves a document for the first time, after running the before(:create)
+    # callbacks, and applying the unique_id.
+    def create
+      set_unique_id if respond_to?(:set_unique_id) # hack
+      save_doc
+    end
     
+    # Saves the document and runs the :update callbacks.
+    def update
+      save_doc
+    end
+
+    private
+
+    def save_doc
+      result = database.save self
+      result['ok']
+    end
+
   end
-  
+
   
 end