--- a/app/controllers/merge_requests_controller.rb
+++ b/app/controllers/merge_requests_controller.rb
@@ -26,12 +26,20 @@ class MergeRequestsController < ApplicationController
   def create
     @merge_request = @repository.proposed_merge_requests.new(params[:merge_request])
     @merge_request.user = current_user
-    if @merge_request.save
-      flash[:success] = %Q{You sent a merge request to "#{@merge_request.target_repository.name}"}
-      redirect_to project_repository_path(@project, @repository) and return
-    else
-      @repositories = @project.repositories.find(:all, :conditions => ["id != ?", @repository.id])
-      render :action => "new"
+    respond_to do |format|
+      if @merge_request.save
+        format.html {
+          flash[:success] = %Q{You sent a merge request to "#{@merge_request.target_repository.name}"}
+          redirect_to project_repository_path(@project, @repository) and return
+        }
+        format.xml { render :xml => @merge_request, :status => :created }
+      else
+        format.html {
+          @repositories = @project.repositories.find(:all, :conditions => ["id != ?", @repository.id])
+          render :action => "new"
+        }
+        format.xml { render :xml => @merge_request.errors, :status => :unprocessable_entity }
+      end
     end
   end
   

--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -109,6 +109,7 @@ class Project < ActiveRecord::Base
       builder.repositories :type => "array" do 
         repositories.each { |repo|
           builder.repository do
+            builder.id repo.id
             builder.name repo.name
             builder.owner repo.user.login
           end

--- a/config/routes.rb
+++ b/config/routes.rb
@@ -38,7 +38,7 @@ ActionController::Routing::Routes.draw do |map|
     }, :as => "repos") do |repo|
       repo.resources :committers, :name_prefix => nil, :collection => {:auto_complete_for_user_login => :post, :list => :get, :create => :post}
       repo.resources :comments, :member => { :commmit => :get  }
-      repo.resources :merge_requests, :member => { :resolve => :put }
+      repo.resources :merge_requests, :member => { :resolve => :put }, :collection => { :create => :post }
       repo.commit_comment "comments/commit/:sha", :controller => "comments", 
         :action => "commit", :conditions => { :method => :get }