diff --git a/amadeus/settings.py b/amadeus/settings.py
index 4f55fb8..dec7e6b 100644
--- a/amadeus/settings.py
+++ b/amadeus/settings.py
@@ -71,7 +71,7 @@ MIDDLEWARE_CLASSES = [
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
     'django.middleware.locale.LocaleMiddleware',
 
-    #'core.middleware.TimeSpentMiddleware',
+    'log.middleware.TimeSpentMiddleware',
     #libs-middleware
 
 ]
diff --git a/amadeus/static/js/course.js b/amadeus/static/js/course.js
index 20cbadf..b233458 100755
--- a/amadeus/static/js/course.js
+++ b/amadeus/static/js/course.js
@@ -111,6 +111,21 @@ $('.collapse').on('show.bs.collapse', function (e) {
         var btn = $(this).parent().find('.fa-angle-right');
         
         btn.switchClass("fa-angle-right", "fa-angle-down", 250, "easeInOutQuad");
+
+        var url = $(this).parent().find('.log_url').val();
+        var log_input = $(this).parent().find('.log_id');
+
+        $.ajax({
+            url: url,
+            data: {'action': 'open'},
+            dataType: 'json',
+            success: function (data) {
+                log_input.val(data.log_id);
+            },
+            error: function (data) {
+                console.log(data);
+            }
+        });
     }
 });
 
@@ -119,5 +134,20 @@ $('.collapse').on('hide.bs.collapse', function (e) {
         var btn = $(this).parent().find('.fa-angle-down');
         
         btn.switchClass("fa-angle-down", "fa-angle-right", 250, "easeInOutQuad");
+
+        var url = $(this).parent().find('.log_url').val();
+        var log_id = $(this).parent().find('.log_id').val();
+
+        $.ajax({
+            url: url,
+            data: {'action': 'close', 'log_id': log_id},
+            dataType: 'json',
+            success: function (data) {
+                console.log(data.message);
+            },
+            error: function (data) {
+                console.log(data);
+            }
+        });
     }
 });
\ No newline at end of file
diff --git a/categories/templates/categories/list.html b/categories/templates/categories/list.html
index 15fff77..b74731d 100755
--- a/categories/templates/categories/list.html
+++ b/categories/templates/categories/list.html
@@ -32,8 +32,7 @@
                 <li>{% trans "all subjects" %}</li>
             </ul>
         </div>
-    {% endif %}
-   
+    {% endif %}   
 
     <!-- Code for listing categories -->
     <div class="col-md-12 cards-content">
@@ -79,6 +78,9 @@
                         </div>
                     </div>
                     <div id="{{category.slug}}" class="panel-collapse collapse category-panel-content">
+                        <input type="hidden" class="log_url" value="{% url 'categories:view_log' category.id %}" />
+                        <input type="hidden" class="log_id" value="" />
+
                         <h4>  {% trans "Coordinator(s): " %}
                             {% for coordinator in category.coordinators.all %}
                                 {{coordinator.username}}
diff --git a/categories/urls.py b/categories/urls.py
index fc1d512..77522f5 100644
--- a/categories/urls.py
+++ b/categories/urls.py
@@ -7,4 +7,5 @@ urlpatterns = [
 	url(r'^delete/(?P<slug>[\w_-]+)/$', views.DeleteCategory.as_view(), name='delete'),
 	url(r'^replicate/(?P<slug>[\w_-]+)/$', views.CreateCategory.as_view(), name='replicate'),
 	url(r'^update/(?P<slug>[\w_-]+)/$', views.UpdateCategory.as_view(), name='update'),
+	url(r'^view_log/(?P<category>[\w_-]+)/$', views.category_view_log, name = 'view_log')
 ]
\ No newline at end of file
diff --git a/categories/views.py b/categories/views.py
index c04c966..d4632c7 100644
--- a/categories/views.py
+++ b/categories/views.py
@@ -5,7 +5,7 @@ from django.core.urlresolvers import reverse_lazy
 from rolepermissions.verifications import has_role
 
 from django.contrib import messages
-from django.http import HttpResponse
+from django.http import HttpResponse, JsonResponse
 from django.utils.translation import ugettext_lazy as _
 
 from django.contrib.auth.mixins import LoginRequiredMixin
@@ -17,6 +17,10 @@ from braces import views
 from subjects.models import Subject
 
 from log.mixins import LogMixin
+from log.decorators import log_decorator_ajax
+from log.models import Log
+
+import time
 
 class IndexView(LoginRequiredMixin, ListView):
 
@@ -113,7 +117,6 @@ class CreateCategory(views.SuperuserRequiredMixin, HasRoleMixin, LogMixin, Creat
 
         super(CreateCategory, self).createLog(self.request.user, self.log_component, self.log_action, self.log_resource, self.log_context)
 
-        #TODO: Implement log calls
         return super(CreateCategory, self).form_valid(form)
 
     def get_success_url(self):
@@ -182,4 +185,24 @@ class UpdateCategory(LogMixin, UpdateView):
         messages.success(self.request, _('Category "%s" updated successfully!')%(objeto))
         return reverse_lazy('categories:index')
 
+@log_decorator_ajax('category', 'view', 'category')
+def category_view_log(request, category):
+    action = request.GET.get('action')
+
+    if action == 'open':
+        category = get_object_or_404(Category, id = category)
+
+        log_context = {}
+        log_context['category_id'] = category.id
+        log_context['category_name'] = category.name
+        log_context['category_slug'] = category.slug
+        log_context['timestamp_start'] = str(int(time.time()))
+        log_context['timestamp_end'] = '-1'
+
+        request.log_context = log_context
+
+        log_id = Log.objects.latest('id').id
+
+        return JsonResponse({'message': 'ok', 'log_id': log_id})
 
+    return JsonResponse({'message': 'ok'})
diff --git a/log/middleware.py b/log/middleware.py
index 7d878cb..7c942f6 100644
--- a/log/middleware.py
+++ b/log/middleware.py
@@ -32,16 +32,16 @@ class TimeSpentMiddleware(object):
 
 					request.session['log_id'] = None
 
-					oppened_logs = Log.objects.filter(user = request.user, context__contains={'timestamp_end': '-1'})
+				oppened_logs = Log.objects.filter(user = request.user, context__contains={'timestamp_end': '-1'})
 
-					for op_log in oppened_logs:
-						if type(op_log.context) == dict:
-							log_context = op_log.context
-						else:
-							log_context = json.loads(op_log.context)
+				for op_log in oppened_logs:
+					if type(op_log.context) == dict:
+						log_context = op_log.context
+					else:
+						log_context = json.loads(op_log.context)
 
-						log_context['timestamp_end'] = str(int(time.time()))
+					log_context['timestamp_end'] = str(int(time.time()))
 
-						op_log.context = log_context
+					op_log.context = log_context
 
-						op_log.save()
\ No newline at end of file
+					op_log.save()
\ No newline at end of file
--
libgit2 0.21.2