// Add a link to restart installer if an error occured + session protection on reinstallation

install-dev/classes/session.php

@@ -45,6 +45,12 @@ class InstallSession
 		session_start();
 	}
 
+	public function clean()
+	{
+		foreach ($_SESSION as $k => $v)
+			unset($_SESSION[$k]);
+	}
+
 	public function &__get($varname)
 	{
 		if (isset($_SESSION[$varname]))

install-dev/controllers/http/process.php

@@ -76,6 +76,9 @@ class InstallControllerHttpProcess extends InstallControllerHttp
 		if (file_exists(_PS_ROOT_DIR_.'/'.self::SETTINGS_FILE))
 			require_once _PS_ROOT_DIR_.'/'.self::SETTINGS_FILE;
 
+		if (!$this->session->process_validated)
+			$this->session->process_validated = array();
+
 		if (Tools::getValue('generateSettingsFile'))
 			$this->processGenerateSettingsFile();
 		else if (Tools::getValue('installDatabase') && !empty($this->session->process_validated['generateSettingsFile']))
@@ -94,7 +97,13 @@ class InstallControllerHttpProcess extends InstallControllerHttp
 		{
 			// With no parameters, we consider that we are doing a new install, so session where the last process step
 			// was stored can be cleaned
-			$this->session->process_validated = array();
+			if (Tools::getValue('restart'))
+				$this->session->process_validated = array();
+			else if (!Tools::getValue('submitNext'))
+			{
+				$this->session->clean();
+				Tools::redirect('index.php');
+			}
 		}
 	}
 
@@ -225,6 +234,11 @@ class InstallControllerHttpProcess extends InstallControllerHttp
 		$this->model_install->installTheme();
 		if ($this->model_install->getErrors())
 			$this->ajaxJsonAnswer(false, $this->model_install->getErrors());
+
+		// If last step is fine, we store the fact PrestaShop is installed
+		$this->session->last_step = 'configure';
+		$this->session->step = 'configure';
+
 		$this->ajaxJsonAnswer(true);
 	}
 

install-dev/theme/js/process.js

@@ -78,6 +78,7 @@ function install_error(step, errors)
 	current_step = 0;
 	is_installing = false;
 
+	$('#error_process').show();
 	$('#process_step_'+step.key).show().addClass('fail');
 	$('#progress_bar .total .progress').stop().css('width', '0px');
 	$('#progress_bar .installing').hide();

install-dev/theme/view.css

@@ -693,7 +693,7 @@ ul#optional_update {list-style-type:none;}
 
 /* STEP 5 ******************************************/
 #install_process_form{
-    height: 260px;
+    min-height: 260px;
 }
 #progress_bar {
 	display: none;
@@ -763,7 +763,28 @@ ul#optional_update {list-style-type:none;}
 					#progress_bar ol.process_list li .error_log li {
 					    padding: 3px;
 					}
-			
+
+#error_process{
+    padding: 5px;
+    background-color: #FBE8D6;
+    border: 1px solid #666666;
+    margin-left: 37px;
+    margin-bottom: 20px;
+    display: none;
+}
+    #error_process h3{
+        color: red;
+    }
+    #error_process p{
+        margin-left: 20px;
+    }
+        #error_process p a{
+            font-weight: bold;
+        }
+        #error_process p a:hover{
+            text-decoration: underline;
+        }
+
 #install_process_success {
 	display: none;
 }

install-dev/theme/views/process.phtml

@@ -25,6 +25,11 @@ var process_percent = <?php echo 100 / count($this->process_steps) ?>;
 				</li>
 			<?php endforeach; ?>
 		</ol>
+
+		<div id="error_process">
+			<h3><?php echo $this->l('An error occured during installation ...') ?></h3>
+			<p><?php echo $this->l('You can use the links on the left column to go back to the previous steps, or restart the installation process by <a href="%s">clicking here</a>.', 'index.php?restart=true') ?></p>
+		</div>
 	</div>
 </div>