made tabs work

app/controllers/moderation_controller.rb

@@ -1,4 +1,12 @@
 class ModerationController < ApplicationController
+  before_filter :authenticate_user!
+
   def index
+    @type = params[:type]
+    @reports = if @type == 'all'
+                 Report.where(deleted: false).reverse_order
+               else
+                 Report.where(deleted: false).where('LOWER(type) = ?', "reports::#{@type}").reverse_order
+               end
   end
 end

app/views/moderation/_moderation_tabs.html.haml

@@ -2,7 +2,8 @@
   .panel.panel-default
     .panel-body
       %ul.nav.nav-pills.nav-stacked
-        = nav_entry "All reports", "#"
-        = nav_entry "Users", "#"
-        = nav_entry "Answers", "#"
-        = nav_entry "Comments", "#"
+        = nav_entry "All reports", moderation_path
+        = nav_entry "Answers",     moderation_path('answer')
+        = nav_entry "Comments",    moderation_path('comment')
+        = nav_entry "Users",       moderation_path('user')
+        = nav_entry "Questions",   moderation_path('question')

app/views/moderation/index.html.haml

@@ -2,5 +2,5 @@
   .row
     = render 'moderation/moderation_tabs'
     .col-md-9.col-sm-9.col-xs-12
-      - Report.where(deleted: false).reverse_order.each do |r|
+      - @reports.each do |r|
         = render 'moderation/moderationbox', report: r

config/routes.rb

@@ -13,7 +13,7 @@ Rails.application.routes.draw do
   # Moderation panel
   constraints ->(req) { req.env['warden'].authenticate?(scope: :user) &&
                        (req.env['warden'].user.admin? or req.env['warden'].user.moderator?) } do
-    match '/moderation', to: 'moderation#index', via: :get, as: :moderation
+    match '/moderation(/:type)', to: 'moderation#index', via: :get, as: :moderation, defaults: {type: 'all'}
     namespace :ajax do
       match '/mod/destroy_report', to: 'moderation#destroy_report', via: :post, as: :mod_destroy_report
       match '/mod/create_comment', to: 'moderation#create_comment', via: :post, as: :mod_create_comment