Create restful invites controller and ajaxified the workflow.

app/controllers/foodcoop_controller.rb

@@ -1,20 +0,0 @@
-class FoodcoopController < ApplicationController
-
-  before_filter :authenticate_membership_or_admin
-
-  # Invites a new user to join foodsoft in this group.
-  def invite
-    @invite = Invite.new
-  end
-
-  # Sends an email
-  def send_invitation
-    @invite = Invite.new(:user => @current_user, :group => @group, :email => params[:invite][:email])
-    if @invite.save
-      flash[:notice] = format('Es wurde eine Einladung an %s geschickt.', @invite.email)
-      redirect_to root_path
-    else
-      render :action => 'invite'
-    end
-  end
-end

app/controllers/invites_controller.rb

@@ -0,0 +1,26 @@
+class InvitesController < ApplicationController
+
+  before_filter :authenticate_membership_or_admin, :only => [:new]
+  #TODO: auhtorize also for create action.
+  
+  def new
+    @invite = Invite.new(:user => @current_user, :group => @group)
+
+    render :update do |page|
+      page.replace_html :edit_box, :partial => "new"
+      page.show :edit_box
+    end
+  end
+  
+  def create
+    @invite = Invite.new(params[:invite])
+
+    render :update do |page|
+      if @invite.save
+        page.replace_html :edit_box, :partial => "success"
+      else
+        page.replace_html :edit_box, :partial => "new"
+      end
+    end
+  end
+end

app/models/invite.rb

@@ -24,8 +24,6 @@ class Invite < ActiveRecord::Base
   validates_presence_of :token
   validates_presence_of :expires_at
       
-  attr_accessible :email, :user, :group
-    
  protected
   
   # Before validation, set token and expires_at.

app/views/foodcoop/invite.haml

@@ -1,14 +0,0 @@
-- title "Neues Foodcoop-Mitglied einladen"
-
-%p 
-  Hier kannst du eine Person in die Gruppe 
-  %b=h @group.name
-  einladen, die noch nicht Mitglied der Foodcoop ist.
-.edit_form{:style => 'width:35em'}      
-  - form_for(@invite, :url => {:action => 'send_invitation', :id => @group}) do |form|
-    = form.error_messages
-    %p
-      Email-Adresse: 
-      = form.text_field('email', :size => 40, :maxlength => 128)
-    %p
-      = submit_tag('Einladung abschicken')

app/views/invites/_new.html.haml

@@ -0,0 +1,16 @@
+%p 
+  Hier kannst du eine Person in die Gruppe 
+  %b=h @invite.group.name
+  einladen, die noch nicht Mitglied der Foodcoop ist.
+.edit_form{:style => 'width:35em'}      
+  - remote_form_for @invite do |form|
+    = form.error_messages :header_message => nil
+    = form.hidden_field :user_id
+    = form.hidden_field :group_id
+    %p
+      Email-Adresse: 
+      = form.text_field :email, :size => 40, :maxlength => 128
+    %p
+      = submit_tag('Einladung abschicken')
+      oder
+      = link_to_function "Abbrechen", "Element.hide('edit_box')"

app/views/invites/_success.html.haml

@@ -0,0 +1,7 @@
+%p
+  %b= @invite.email
+  wurde erfolgreich eingeladen.
+%p
+  = link_to_function "Schließen", "Element.hide('edit_box')"
+  oder
+  = remote_link_to "Weitere Person einladen", :url => new_invite_path(:id => @invite.group)

app/views/shared/memberships/_members.rhtml

@@ -2,7 +2,7 @@
 <p>
     <i>
       Hier kannst Du die Mitglieder der Gruppe verwalten oder ein neues Foodcoop-Mitglied in die Gruppe
-      <%= link_to('einladen', :controller => '/foodcoop', :action => 'invite', :id => @group) %>.
+      <%= remote_link_to('einladen', :url => new_invite_path(:id => @group)) %>.
     </i>
 </p>
 <div class="left_column" style="width:48%">
@@ -22,3 +22,5 @@
 		<%= link_to('Person einladen', :controller => '/foodcoop', :action => 'invite', :id => @group) %>
     </div>
 </div>
+
+<div id="edit_box" style="display:none"></div>

config/routes.rb

@@ -10,6 +10,8 @@ ActionController::Routing::Routes.draw do |map|
   map.resources :messages, :only => [:index, :show, :new, :create],
     :member => { :reply => :get, :user => :get, :group => :get }
 
+  map.resources :invites, :only => [:new, :create]
+
   map.namespace :foodcoop do |foodcoop|
     foodcoop.root :controller => "users", :action => "index"
     foodcoop.resources :users, :only => [:index]

test/functional/invites_controller_test.rb

@@ -0,0 +1,20 @@
+require 'test_helper'
+
+class InvitesControllerTest < ActionController::TestCase
+  def test_new
+    get :new
+    assert_template 'new'
+  end
+  
+  def test_create_invalid
+    Invite.any_instance.stubs(:valid?).returns(false)
+    post :create
+    assert_template 'new'
+  end
+  
+  def test_create_valid
+    Invite.any_instance.stubs(:valid?).returns(true)
+    post :create
+    assert_redirected_to root_url
+  end
+end