Bug correction in User::isUnique method + Start of caching system

TODO

@@ -1,10 +1,8 @@
 * i18n
-* handle negative amounts
 
 inc/Invoices.class.php :
 ========================
 * Modify store() method to handle storage
-* Modify load() method to handle JOIN
 * Modify load() method to handle complex queries (such as WHERE date < DATE_1 AND date > DATE_2)
 * Cache
 

inc/User.class.php

@@ -103,7 +103,7 @@ class User extends Storage {
     // (a user = a unique login and display_name)
     // =========================================
     public function isUnique() {
-        if(count($this->load(array('login'=>$this->login))) == 0 && count($this->load(array('display_name'=>$this->display_name)))) {
+        if($this->load(array('login'=>$this->login)) === false && $this->load(array('display_name'=>$this->display_name)) === false) {
             return true;
         }
         else {

index.php

@@ -365,6 +365,11 @@
             break;
 
         default:
+            // Display cached page in priority
+            if($cache = $tpl->cache('index', $expire_time = 600, $cache_id = NULL)) {
+                echo $cache;
+            }
+            else {
                 $users_list = new User();
                 $users_list = $users_list->load();
 
@@ -374,6 +379,10 @@
                 $tpl->assign('users', secureDisplay($users_list));
                 $tpl->assign('invoices', secureDisplay($invoices_list));
 
+                // Cache the page (1 month to make it almost permanent and only regenerate it upon new invoice)
+                $tpl->cache('index', 108000, NULL);
+
                 $tpl->draw('index');
                 break;
             }
+    }

tpl/css/style.css

@@ -95,6 +95,10 @@ input[type=submit] {
     padding: 0.1em;
 }
 
+#detailed_summary {
+    margin-top: 2.5em;
+}
+
 #connexion_form {
     margin: auto;
     width: 67%;
@@ -122,16 +126,8 @@ textarea#what {
     width: 75%;
 }
 
-#list_expenses tr:hover {
+#list_expenses tr:hover, #balance_table tr:not(:first-child):hover *, .highlight_td {
-    background-color: #00bd00;
+    background-color: green;
-}
-
-#balance_table tr:not(:first-child):hover * {
-    background-color: #00bd00;
-}
-
-.highlight_td {
-    background-color: #00bd00;
 }
 
 #user_connected {

tpl/index.html

@@ -27,6 +27,7 @@
 <div id="detailed_summary">
     <h2>Detailed list of bills for last month</h2>
 
+    {if condition="count($invoices)>1"}
         <table id="list_expenses">
             <tr>
                 <th>Date</th>
@@ -49,5 +50,8 @@
                 </tr>
             {/loop}
         </table>
+    {else}
+        <p class="center">No bills added.</p>
+    {/if}
 </div>
 {include="footer"}