Bugfixing in memberships-filter.

app/controllers/memberships_controller.rb

@@ -2,18 +2,16 @@ class MembershipsController < ApplicationController
     before_filter :authenticate_membership_or_admin
 
   def add_member
-    @group = Group.find(params[:group_id])
     user = User.find(params[:user_id])
     Membership.create(:group => @group, :user => user)
-    redirect_to :action => 'reload', :group_id => @group
+    redirect_to :action => 'reload', :id => @group
   end
 
   def drop_member
     begin
-      group = Group.find(params[:group_id])
       Membership.find(params[:membership_id]).destroy
       if User.find(@current_user.id).role_admin?
-        redirect_to :action => 'reload', :group_id => group
+        redirect_to :action => 'reload', :id => @group
       else
         # If the user drops himself from admin group
         flash[:notice] = MESG_NO_ADMIN_ANYMORE
@@ -21,12 +19,11 @@ class MembershipsController < ApplicationController
       end
     rescue => error
       flash[:error] = error.to_s
-      redirect_to :action => 'reload', :group_id => group
+      redirect_to :action => 'reload', :id => @group
     end
   end
 
   def reload
-    @group = Group.find(params[:group_id])
     render :update do |page|
       page.replace_html 'members', :partial => 'shared/memberships/current_members',  :object => @group
       page.replace_html 'non_members', :partial => 'shared/memberships/non_members', :object => @group

app/views/shared/memberships/_current_members.rhtml

@@ -10,7 +10,7 @@
       <li style="margin-left:-15px">
         <b><%= membership.user.nick %></b> (<%=h membership.user.first_name + ' ' + membership.user.last_name %>)
          | <%= link_to_remote 'entfernen', 
-                :url => { :controller => '/memberships', :action => 'drop_member', :group_id => @group, :membership_id => membership },
+                :url => { :controller => '/memberships', :action => 'drop_member', :id => @group, :membership_id => membership },
                 :before => "Element.show('loader')",
                 :success => "Element.hide('loader')" %>
        </li>

app/views/shared/memberships/_non_members.rhtml

@@ -3,7 +3,7 @@
   <li>
     <b><%= user.nick %></b> (<%=h user.first_name + ' ' + user.last_name %>)
     | <%= link_to_remote 'hinzufügen', 
-        :url => { :controller => '/memberships', :action => 'add_member', :group_id => @group, :user_id => user },
+        :url => { :controller => '/memberships', :action => 'add_member', :id => @group, :user_id => user },
         :before => "Element.show('loader')",
         :success => "Element.hide('loader')" %>
   </li>