diff --git a/kfet/templates/kfet/kpsul.html b/kfet/templates/kfet/kpsul.html
index 19fca28f..58a006f5 100644
--- a/kfet/templates/kfet/kpsul.html
+++ b/kfet/templates/kfet/kpsul.html
@@ -1083,14 +1083,19 @@ $(document).ready(function() {
     }
 
     function getHistory() {
+        var data = {
+            from: moment().subtract(1, 'days').format('YYYY-MM-DD HH:mm:ss'),
+        };
+        console.log(data);
         $.ajax({
             dataType: "json",
-            url     : "{% url 'kfet.kpsul.history' %}",
-            method  : "GET",
+            url     : "{% url 'kfet.history.json' %}",
+            method  : "POST",
+            data    : data,
         })
         .done(function(data) {
-            for (var opegroup_id in data) {
-                addOpeGroup(data[opegroup_id]);
+            for (var i=0; i<data['opegroups'].length; i++) {
+                addOpeGroup(data['opegroups'][i]);
             }
         });
     }
diff --git a/kfet/urls.py b/kfet/urls.py
index f444d540..330adca9 100644
--- a/kfet/urls.py
+++ b/kfet/urls.py
@@ -123,8 +123,6 @@ urlpatterns = [
         name = 'kfet.kpsul.perform_operations'),
     url('^k-psul/cancel_operations$', views.kpsul_cancel_operations,
         name = 'kfet.kpsul.cancel_operations'),
-    url('^k-psul/history$', views.kpsul_history,
-        name = 'kfet.kpsul.history'),
     url('^k-psul/articles_data', views.kpsul_articles_data,
         name = 'kfet.kpsul.articles_data'),
     url('^k-psul/update_addcost$', views.kpsul_update_addcost,
@@ -132,8 +130,16 @@ urlpatterns = [
     url('^k-psul/get_settings$', views.kpsul_get_settings,
         name = 'kfet.kpsul.get_settings'),
 
+    # -----
+    # JSON urls
+    # -----
+
+    url('^history.json$', views.history_json,
+        name = 'kfet.history.json'),
+
     # -----
     # Settings urls
+    # -----
 
     url('^settings/$',
         permission_required('kfet.change_settings')(views.SettingsList.as_view()),
diff --git a/kfet/views.py b/kfet/views.py
index f46ece36..25fdfae8 100644
--- a/kfet/views.py
+++ b/kfet/views.py
@@ -12,7 +12,7 @@ from django.contrib.auth.models import User, Permission, Group
 from django.http import HttpResponse, JsonResponse, Http404
 from django.forms import modelformset_factory
 from django.db import IntegrityError, transaction
-from django.db.models import F, Sum
+from django.db.models import F, Sum, Prefetch
 from django.db.models.functions import Coalesce
 from django.utils import timezone
 from django.utils.crypto import get_random_string
@@ -589,7 +589,6 @@ def kpsul(request):
     data['checkout_form']  = KPsulCheckoutForm()
     operation_formset = KPsulOperationFormSet(queryset=Operation.objects.none())
     data['operation_formset'] = operation_formset
-    addcost_for = Settings.ADDCOST_FOR()
     return render(request, 'kfet/kpsul.html', data)
 
 @permission_required('kfet.is_team')
@@ -1015,25 +1014,71 @@ def kpsul_cancel_operations(request):
     return JsonResponse(data)
 
 @permission_required('kfet.is_team')
-def kpsul_history(request):
-    opegroups_list = (OperationGroup.objects
-            .values(
-                'id', 'amount', 'at', 'checkout_id', 'is_cof', 'comment',
-                'valid_by__trigramme', 'on_acc__trigramme')
-            .select_related('valid_by', 'on_acc')
-            .filter(at__gt=timezone.now()-datetime.timedelta(hours=24)))
-    opegroups = { opegroup['id']:opegroup for opegroup in opegroups_list }
+def history_json(request):
+    # Récupération des paramètres
+    from_date = request.POST.get('from', None)
+    to_date   = request.POST.get('to', None)
+    checkouts = request.POST.getlist('checkouts[]', None)
+    accounts  = request.POST.getlist('accounts[]', None)
+
+    # Construction de la requête (sur les opérations) pour le prefetch
+    queryset_prefetch = Operation.objects.select_related(
+            'canceled_by__trigramme', 'addcost_for__trigramme',
+            'article__name')
+
+    # Construction de la requête principale
+    opegroups = (OperationGroup.objects
+        .prefetch_related(Prefetch('opes', queryset = queryset_prefetch))
+        .select_related('on_acc__trigramme', 'valid_by__trigramme')
+        .order_by('at')
+    )
+    # Application des filtres
+    if from_date:
+        opegroups = opegroups.filter(at__gte=from_date)
+    if to_date:
+        opegroups = opegroups.filter(at__lt=to_date)
+    if checkouts:
+        opegroups = opegroups.filter(checkout_id__in=checkouts)
+    if accounts:
+        opegroups = opegroups.filter(on_acc_id__in=accounts)
+
+    # Construction de la réponse
+    opegroups_list = []
     for opegroup in opegroups:
-        opegroups[opegroup]['opes'] = []
-    opes = (Operation.objects
-            .values(
-                'id', 'type', 'amount', 'addcost_amount', 'is_checkout',
-                'article__name', 'canceled_by__trigramme', 'canceled_at',
-                'addcost_for__trigramme', 'article_nb', 'group_id')
-            .filter(group__in=opegroups.keys()))
-    for ope in opes:
-        opegroups[ope['group_id']]['opes'].append(ope)
-    return JsonResponse(opegroups)
+        opegroup_dict = {
+            'id'         : opegroup.id,
+            'amount'     : opegroup.amount,
+            'at'         : opegroup.at,
+            'checkout_id': opegroup.checkout_id,
+            'is_cof'     : opegroup.is_cof,
+            'comment'    : opegroup.comment,
+            'opes'       : [],
+            'on_acc__trigramme':
+                    opegroup.on_acc and opegroup.on_acc.trigramme or None,
+        }
+        if request.user.has_perm('kfet.is_team'):
+            opegroup_dict['valid_by__trigramme'] = (
+                opegroup.valid_by and opegroup.valid_by.trigramme or None)
+        for ope in opegroup.opes.all():
+            ope_dict = {
+                'id'            : ope.id,
+                'type'          : ope.type,
+                'amount'        : ope.amount,
+                'article_nb'    : ope.article_nb,
+                'is_checkout'   : ope.is_checkout,
+                'addcost_amount': ope.addcost_amount,
+                'canceled_at'   : ope.canceled_at,
+                'article__name':
+                    ope.article and ope.article.name or None,
+                'addcost_for__trigramme':
+                    ope.addcost_for and ope.addcost_for.trigramme or None,
+            }
+            if request.user.has_perm('kfet.is_team'):
+                ope_dict['canceled_by__trigramme'] = (
+                    ope.canceled_by and ope.canceled_by.trigramme or None)
+            opegroup_dict['opes'].append(ope_dict)
+        opegroups_list.append(opegroup_dict)
+    return JsonResponse({ 'opegroups': opegroups_list })
 
 @permission_required('kfet.is_team')
 def kpsul_articles_data(request):