added the forgotten files

app/controllers/messages_controller.rb

+#   Copyright (c) 2010, Diaspora Inc.  This file is
+#   licensed under the Affero General Public License version 3 or later.  See
+#   the COPYRIGHT file.
+
+class MessagesController < ApplicationController
+  include ApplicationHelper
+  before_filter :authenticate_user!
+
+  respond_to :html, :mobile
+  respond_to :json, :only => :show
+
+  def create
+    cnv = Conversation.joins(:conversation_visibilities).where(:id => params[:conversation_id],
+                              :conversation_visibilities => {:person_id => current_user.person.id}).first
+
+    if cnv
+      message = Message.new(:conversation_id => cnv.id, :text => params[:text], :author => current_user.person)
+      
+      if message.save
+        Rails.logger.info("event=create type=comment user=#{current_user.diaspora_handle} status=success message=#{message.id} chars=#{params[:text].length}")
+        Postzord::Dispatch.new(current_user, message).post
+
+        respond_with cnv
+      else
+        render :nothing => true, :status => 406
+      end
+    else
+      render :nothing => true, :status => 406
+    end
+  end
+
+end

spec/controllers/messages_controller_spec.rb

+#   Copyright (c) 2010, Diaspora Inc.  This file is
+#   licensed under the Affero General Public License version 3 or later.  See
+#   the COPYRIGHT file.
+
+require 'spec_helper'
+
+describe MessagesController do
+  render_views
+
+  before do
+    @user1 = alice
+    @user2 = bob
+
+    @aspect1 = @user1.aspects.first
+    @aspect2 = @user2.aspects.first
+
+    sign_in :user, @user1
+  end
+
+  describe '#create' do
+    before do
+      @create_hash = { :author => @user1.person, :participant_ids => [@user1.contacts.first.person.id, @user1.person.id],
+                       :subject => "cool stuff", :text => "stuff"}
+      
+    end
+    context "on my own post" do
+      before do
+        @cnv = Conversation.create(@create_hash)
+        @message_hash = {:conversation_id => @cnv.id, :text => "here is something else"}
+      end
+      it 'responds to format js' do
+        lambda{
+          post :create, @message_hash
+        }.should change(Message, :count).by(1)
+        response.code.should == '201'
+        response.should redirect_to(@cnv)
+      end
+    end
+
+    context "on a post from a contact" do
+      before do
+        @create_hash[:author] = @user2.person
+        @cnv = Conversation.create(@create_hash)
+        @message_hash = {:conversation_id => @cnv.id, :text => "here is something else"}
+      end
+      it 'comments' do
+        post :create, @message_hash
+        response.code.should == '201'
+      end
+      it "doesn't overwrite author_id" do
+        new_user = Factory.create(:user)
+        @message_hash[:author_id] = new_user.person.id.to_s
+        post :create, @message_hash
+        Message.find_by_text(@message_hash[:text]).author_id.should == @user1.person.id
+      end
+      it "doesn't overwrite id" do
+        old_message = Message.create(:text => "hello", :author_id => @user1.person.id, :conversation_id => @cnv.id)
+        @message_hash[:id] = old_message.id
+        post :create, @message_hash
+        old_message.reload.text.should == 'hello'
+      end
+    end
+    context 'on a post from a stranger' do
+      before do
+        @create_hash[:author] = eve.person
+        @cnv = Conversation.create(@create_hash)
+        @message_hash = {:conversation_id => @cnv.id, :text => "here is something else"}
+      end
+      it 'posts no comment' do
+        Message.should_not_receive(:new)
+        post :create, @message_hash
+        response.code.should == '406'
+      end
+    end
+  end
+end