MS IZ added the move friend method

app/controllers/groups_controller.rb

@@ -49,4 +49,9 @@ class GroupsController < ApplicationController
     end
   end
 
+  def move_person
+    current_user.move_friend( :friend_id => params[:person_id], :from => params[:old_group_id], :to => params[:new_group_id])
+    render :nothing => true
+  end
+
 end

app/models/group.rb

@@ -19,5 +19,10 @@ class Group
   def to_s
     name
   end
+  
+  def posts_by_person_id( id )
+    id = ensure_bson id
+    posts.detect{|x| x.person.id == id }
+  end
 end
 

app/models/user.rb

@@ -40,6 +40,28 @@ class User
     Group.create(opts)
   end
 
+  def move_friend( opts = {})
+    return true if opts[:to] == opts[:from]
+    friend = Person.first(:_id => opts[:friend_id])
+    if self.friend_ids.include?(friend.id)
+      from_group = self.group_by_id(opts[:from]) 
+      to_group = self.group_by_id(opts[:to])
+      if from_group && to_group
+        posts_to_move = from_group.posts.find_all_by_person_id(friend.id)
+        puts posts_to_move.inspect
+        to_group.people << friend
+        to_group.posts << posts_to_move
+        puts to_group.inspect
+        from_group.person_ids.delete(ensure_bson(friend.id))
+        posts_to_move.each{ |x| from_group.post_ids.delete(x.id)}
+        puts from_group.inspect
+        from_group.save
+        to_group.save
+        return true
+      end
+    end
+    false
+  end
   ######## Posting ########
   def post(class_name, options = {})
     options[:person] = self.person

app/views/groups/edit.html.haml

@@ -6,17 +6,15 @@
 %h1.big_text
   .back
     = link_to "⇧ #{@group.name}", @group
-
   = "Editing Groups"
 
 
-%ul
 - for group in @groups
   %li.group
     = group.name
     %ul
       -for person in group.people
-        %li..person
+        %li.person
           = person.real_name
 
 

app/views/people/show.html.haml

@@ -17,6 +17,11 @@
         %i= "friends since: #{how_long_ago(@person)}"
       %li
         ="groups: #{@person_groups}"
+        = "edit"
+        = form_for Request.new do |f|
+              = f.select(:group_id, @groups_array)
+              = f.hidden_field :destination_url, :value => person.email
+              = f.submit "add friend"
       %li
         url:
         = @person.url

public/javascripts/group-edit.js

@@ -0,0 +1,14 @@
+$(function() {
+		$("li .person").draggable({
+				helper: 'clone',
+				cursor: 'move'
+		});
+		$("li .group").droppable({
+			drop: function(event, ui) {
+        //alert('dropped!');
+				$("<li class='person'></li>").text(ui.draggable.text()).appendTo(this);
+			}
+		});
+
+
+	});

spec/models/group_spec.rb

@@ -110,4 +110,59 @@ describe Group do
     end
   end
 
+  describe "group editing" do
+    before do
+      @group = @user.group(:name => 'losers')
+      @group2 = @user2.group(:name => 'failures')
+      friend_users(@user, @group, @user2, @group2)
+      @group.reload
+      @group3 = @user.group(:name => 'cats')
+      @user.reload
+    end
+
+    it 'should be able to move a friend from one of users existing groups to another' do
+      @user.move_friend(:friend_id => @user2.person.id, :from => @group.id, :to => @group3.id)
+      @group.reload
+      @group3.reload
+
+      @group.person_ids.include?(@user2.person.id).should be false
+      @group3.people.include?(@user2.person).should be true
+    end
+
+    it "should not move a person who is not a friend" do
+      @user.move_friend(:friend_id => @friend.id, :from => @group.id, :to => @group3.id)
+      @group.reload
+      @group3.reload
+      @group.people.include?(@friend).should be false
+      @group3.people.include?(@friend).should be false
+    end
+     
+    it "should not move a person to a group that's not his" do
+      @user.move_friend(:friend_id => @user2.person.id, :from => @group.id, :to => @group2.id)
+      @group.reload
+      @group2.reload
+      @group.people.include?(@user2.person).should be true 
+      @group2.people.include?(@user2.person).should be false
+    end
+
+    it 'should move all the by that user to the new group' do
+      message = @user2.post(:status_message, :message => "Hey Dude", :to => @group2.id)
+      
+      @user.receive message.to_diaspora_xml
+      @group.reload
+
+      @group.posts.count.should be 1
+      @group3.posts.count.should be 0
+      
+      @user.reload
+      @user.move_friend(:friend_id => @user2.person.id, :from => @group.id, :to => @group3.id)
+      @group.reload
+      @group3.reload
+
+      @group3.posts.count.should be 1
+      @group.posts.count.should be 0
+
+    end
+
+  end
 end