diff --git a/kfet/static/kfet/js/kfet.api.js b/kfet/static/kfet/js/kfet.api.js
index bfadc4dd..dd5d011b 100644
--- a/kfet/static/kfet/js/kfet.api.js
+++ b/kfet/static/kfet/js/kfet.api.js
@@ -284,6 +284,11 @@ class Account extends APIModelObject {
         return Urls['kfet.account.read'](trigramme_url);
     }
 
+    static url_update_for(trigramme) {
+        var trigramme_url = encodeURIComponent(trigramme);
+        return Urls['kfet.account.update'](trigramme_url);
+    }
+
     /**
      * @default <tt>this.trigramme</tt>
      */
@@ -352,6 +357,10 @@ class Checkout extends APIModelObject {
         return Urls['kfet.checkout.read'](api_pk);
     }
 
+    static url_update_for(api_pk) {
+        return Urls['kfet.checkout.update'](api_pk);
+    }
+
     /**
      * @default {@link Formatters.CheckoutFormatter}
      */
diff --git a/kfet/static/kfet/js/kpsul.js b/kfet/static/kfet/js/kpsul.js
index f9aa8e23..c4052d73 100644
--- a/kfet/static/kfet/js/kpsul.js
+++ b/kfet/static/kfet/js/kpsul.js
@@ -36,8 +36,8 @@ class AccountManager {
         this.search    = new AccountSearch(this);
 
         // buttons: search, read or create
-        this.$buttons_container = this._$container.find('.buttons');
-        this.buttons_templates = {
+        this._$buttons_container = this._$container.find('.buttons');
+        this._buttons_templates = {
             create: template`<a href="${'url'}" class="btn btn-primary" target="_blank" title="Créer ce compte"><span class="glyphicon glyphicon-plus"></span></a>`,
             read: template`<a href="${'url'}" class="btn btn-primary" target="_blank" title="Détails du compte"><span class="glyphicon glyphicon-info-sign"></span></a>`,
             search: template`<button class="btn btn-primary search" title="Rechercher"><span class="glyphicon glyphicon-search"></span></button>`,
@@ -65,16 +65,16 @@ class AccountManager {
             var trigramme = this.selection.get();
             if (trigramme.isValidTri()) {
                 var url = Account.url_create(trigramme);
-                buttons = this.buttons_templates.create({url: url});
+                buttons = this._buttons_templates['create']({url: url});
             } else {  /* trigramme input is empty or invalid */
-                buttons = this.buttons_templates.search();
+                buttons = this._buttons_templates['search']();
             }
         } else {  /* an account is loaded */
             var url = this.account.url_read;
-            buttons = this.buttons_templates.read({url: url});
+            buttons = this._buttons_templates['read']({url: url});
         }
 
-        this.$buttons_container.html(buttons);
+        this._$buttons_container.html(buttons);
     }
 
     update(trigramme) {
@@ -261,8 +261,8 @@ class CheckoutManager {
         this.laststatement = new Statement();
         this.laststatement_display_prefix = '#checkout-last_statement_';
 
-        this.$buttons_container = this._$container.find('.buttons');
-        this.buttons_templates = {
+        this._$buttons_container = this._$container.find('.buttons');
+        this._buttons_templates = {
             read: template`<a class="btn btn-primary" href="${'url'}" title="En savoir plus" target="_blank"><span class="glyphicon glyphicon-info-sign"></span></a>`,
             statement_create: template`<a href="${'url'}" title="Effectuer un relevé" class="btn btn-primary" target="_blank"><span class="glyphicon glyphicon-euro"></span></a>`,
         }
@@ -327,12 +327,12 @@ class CheckoutManager {
         var buttons = '';
         if (!this.is_empty()) {
             var url_newcheckout = Statement.url_create(this.checkout.id);
-            buttons += this.buttons_templates.statement_create({
+            buttons += this._buttons_templates['statement_create']({
                 url: url_newcheckout});
             var url_read = this.checkout.url_read;
-            buttons += this.buttons_templates.read({url: url_read});
+            buttons += this._buttons_templates['read']({url: url_read});
         }
-        this.$buttons_container.html(buttons);
+        this._$buttons_container.html(buttons);
     }
 
     reset() {
diff --git a/kfet/views.py b/kfet/views.py
index cc69dcda..a2e4ca17 100644
--- a/kfet/views.py
+++ b/kfet/views.py
@@ -62,7 +62,6 @@ class JSONResponseMixin(object):
         """
         Returns a JSON response, transforming 'context' to make the payload.
         """
-        print(context)
         return JsonResponse(
             self.get_data(context),
             **response_kwargs