diff --git a/plugins/elasticsearch/controllers/elasticsearch_plugin_controller.rb b/plugins/elasticsearch/controllers/elasticsearch_plugin_controller.rb
index 908981f..68d08cd 100644
--- a/plugins/elasticsearch/controllers/elasticsearch_plugin_controller.rb
+++ b/plugins/elasticsearch/controllers/elasticsearch_plugin_controller.rb
@@ -22,12 +22,12 @@ class ElasticsearchPluginController < ApplicationController
   end
 
   def define_searchable_types
-    @searchable_types = ElasticsearchHelper::searchable_types
+    @searchable_types = searchable_types
     @selected_type = (params[:selected_type]|| :all ).to_sym
   end
 
   def define_search_fields_types
-    @filter_types = ElasticsearchHelper::filters
+    @filter_types = filters
     @selected_filter = (params[:filter] || :relevance).to_sym
   end
 
diff --git a/plugins/elasticsearch/helpers/elasticsearch_helper.rb b/plugins/elasticsearch/helpers/elasticsearch_helper.rb
index 32ea7df..bc78f5f 100644
--- a/plugins/elasticsearch/helpers/elasticsearch_helper.rb
+++ b/plugins/elasticsearch/helpers/elasticsearch_helper.rb
@@ -1,6 +1,6 @@
 module ElasticsearchHelper
 
-  def self.searchable_types
+  def searchable_types
     {
      :all              => { label: _("All Results")},
      :text_article     => { label: _("Articles")},
@@ -11,12 +11,20 @@ module ElasticsearchHelper
     }
   end
 
-  def self.filters
-    {
+  def filters
+    filters = {
      :relevance      => { label: _("Relevance")},
      :lexical        => { label: _("Alphabetical")},
      :more_recent    => { label: _("More Recent")},
     }
+
+    selected_type = params[:selected_type] ||  nil
+
+    if selected_type
+      klass = selected_type.to_s.classify.constantize
+      filters.update klass.especific_filter if klass.respond_to? :especific_filter
+    end
+    filters
   end
 
   def process_results
@@ -35,7 +43,7 @@ module ElasticsearchHelper
     begin
       klass = model.to_s.classify.constantize
 
-      query = get_query params[:query], klass: klass, sort_by: get_sort_by(params[:filter])
+      query = get_query params[:query], klass: klass, sort_by: get_sort_by(params[:filter],klass)
       klass.search(query, size: default_per_page(params[:per_page])).page(params[:page]).records
     rescue
       []
@@ -46,12 +54,14 @@ module ElasticsearchHelper
     per_page ||= 10
   end
 
-  def get_sort_by sort_by
+  def get_sort_by sort_by, klass=nil
     case sort_by
       when "lexical"
         { "name.raw" => {"order" => "asc" }}
       when "more_recent"
         { "created_at" => {"order" => "desc"}}
+      else
+        ( klass and klass.respond_to?(:get_sort_by) ) ? klass.get_sort_by(sort_by) : nil
     end
   end
 
diff --git a/plugins/elasticsearch/lib/elasticsearch_plugin/api.rb b/plugins/elasticsearch/lib/elasticsearch_plugin/api.rb
index 9326199..160c10b 100644
--- a/plugins/elasticsearch/lib/elasticsearch_plugin/api.rb
+++ b/plugins/elasticsearch/lib/elasticsearch_plugin/api.rb
@@ -14,10 +14,14 @@ class ElasticsearchPlugin::API < Grape::API
     end
 
     get 'types' do
-      types = {types: ElasticsearchHelper::searchable_types.stringify_keys.keys}
+      types = {types: searchable_types.stringify_keys.keys }
       present types, with: Grape::Presenters::Presenter
     end
 
+    get 'filters' do
+      present filters, with: Grape::Presenters::Presenter
+    end
+
   end
 
 end
diff --git a/plugins/elasticsearch/lib/ext/community.rb b/plugins/elasticsearch/lib/ext/community.rb
index e4c9010..1771aab 100644
--- a/plugins/elasticsearch/lib/ext/community.rb
+++ b/plugins/elasticsearch/lib/ext/community.rb
@@ -7,6 +7,8 @@ class Community
     {
       :secret           => { type: :boolean },
       :visible          => { type: :boolean },
+      :activities_count => { type: :integer },
+      :members_count    => { type: :integer }
     }
   end
 
@@ -21,5 +23,21 @@ class Community
     ]
   end
 
+  def self.especific_filter
+    {
+      :more_active  => { label: _("More Active") },
+      :more_popular => { label: _("More Popular") }
+    }
+  end
+
+  def self.get_sort_by  sort_by
+    case sort_by
+      when "more_active"
+        { :activities_count => {order: :desc}}
+      when "more_popular"
+        { :members_count => {order: :desc} }
+    end
+  end
+
   include SearchableModelHelper
 end
diff --git a/plugins/elasticsearch/lib/ext/event.rb b/plugins/elasticsearch/lib/ext/event.rb
index 7e74fa4..c503da7 100644
--- a/plugins/elasticsearch/lib/ext/event.rb
+++ b/plugins/elasticsearch/lib/ext/event.rb
@@ -4,6 +4,7 @@ require_relative '../../helpers/searchable_model_helper'
 require_relative '../../helpers/nested_helper/profile'
 
 class Event
+  #TODO: o filtro é feito de forma diferente do artigo
 
   def self.control_fields
     {
diff --git a/plugins/elasticsearch/lib/ext/person.rb b/plugins/elasticsearch/lib/ext/person.rb
index 2691975..138931f 100644
--- a/plugins/elasticsearch/lib/ext/person.rb
+++ b/plugins/elasticsearch/lib/ext/person.rb
@@ -8,6 +8,8 @@ class Person
     {
       :visible        => {type: 'boolean'},
       :secret         => { type: :boolean },
+      :activities_count => { type: :integer },
+      :friends_count    => { type: :integer }
     }
   end
 
@@ -22,5 +24,21 @@ class Person
     ]
   end
 
+  def self.especific_filter
+    {
+      :more_active  => { label: _("More Active") },
+      :more_popular => { label: _("More Popular") }
+    }
+  end
+
+  def self.get_sort_by  sort_by
+    case sort_by
+      when "more_active"
+        { :activities_count => {order: :desc}}
+      when "more_popular"
+        { :friends_count => {order: :desc} }
+    end
+  end
+
   include SearchableModelHelper
 end
--
libgit2 0.21.2