* globalization module resolving language via user's and browser's preference with a predefined list of allowed locales

2 files changed, 81 insertions, 2 deletions

diff --git a/app/frontend/i18n/Globalization.php b/app/frontend/i18n/Globalization.php
new file mode 100644
index 0000000..5c0b25a
--- /dev/null
+++ b/app/frontend/i18n/Globalization.php
@@ -0,0 +1,77 @@
+<?php
+
+Prado::using('System.I18N.TGlobalization');
+Prado::using('System.I18N.core.HTTPNegotiator');
+Prado::using('Application.user.DbUser');
+Prado::using('Application.facades.UserFacade');
+Prado::using('Application.dto.LanguageDTO');
+
+class Globalization extends TGlobalization {
+
+    public function init($config) {
+        parent::init($config);
+        $this->getApplication()->attachEventHandler(
+            'OnAuthenticationComplete',
+            [$this, 'setUserCulture']
+        );
+    }
+
+    public function setUserCulture() {
+        $culture = $this->_getUserCulture($this->getUser())
+            ?: $this->_autodetectCulture();
+        Locale::setDefault($culture);
+        $this->setCulture($culture);
+    }
+
+    protected function _getUserCulture(DbUser $user) {
+        if (!$user->IsGuest) {
+            $preference = UserFacade::getInstance()->getLanguagePreference($user);
+            if ($preference) {
+                $preference = $preference->Name;
+            }
+            if (!in_array($preference, $this->AllowedCultures)) {
+                $preference = $this->_getNeutralCulture($this->DefaultCulture);
+            }
+            return $preference;
+        }
+        return NULL;
+    }
+
+    protected function _autodetectCulture() {
+        $culture = $this->_getNeutralCulture($this->DefaultCulture);
+        $http = new HTTPNegotiator();
+        foreach ($http->getLanguages() as $language) {
+            $language = $this->_getNeutralCulture($language);
+            if (in_array($language, $this->AllowedCultures)) {
+                $culture = $language;
+                break;
+            }
+        }
+        return $culture;
+    }
+
+    private function _getNeutralCulture($culture) {
+        return explode('_', $culture)[0];
+    }
+
+    public function getCulture() {
+        return $this->_getNeutralCulture(parent::getCulture());
+    }
+
+    public function setCulture($culture) {
+        parent::setCulture($this->_getNeutralCulture($culture));
+    }
+
+    protected $_allowedCultures = [];
+
+    public function setAllowedCultures($cultures) {
+        $this->_allowedCultures = array_map('trim', explode(',', $cultures));
+    }
+
+    public function getAllowedCultures() {
+        return $this->_allowedCultures;
+    }
+
+}
+
+?>
diff --git a/app/frontend/i18n/config.xml b/app/frontend/i18n/config.xml
index c80b46d..52f5b7e 100644
--- a/app/frontend/i18n/config.xml
+++ b/app/frontend/i18n/config.xml
@@ -4,10 +4,12 @@
     <using namespace="System.I18N.*" />
   </paths>
   <modules>
-    <module id="globalization" class="System.I18N.TGlobalization">
+    <module id="globalization"
+            class="Application.i18n.Globalization"
+            DefaultCulture="pl"
+            AllowedCultures="pl,en">
       <translation type="gettext"
                    source="Application.i18n"
-                   autosave="true"
                    cache="true" />
     </module>
   </modules>