Allow for fallback to locale files, backwards compatibility with Lara…

…vel 5.1 LTS, Clear cache after Fetch. #2

config/translation-db.php

@@ -34,4 +34,12 @@
      * happening.
      */
     'minimal' => false,
+
+    /**
+     * Use locales from files as a fallback option. Be aware that
+     * locales are loaded as groups. When just one locale of a group
+     * exists in the database, a file will never be used.
+     * To use some files, keep these groups fully out of your database.
+     */
+    'file_fallback' => false,
 ];

src/Controllers/TranslationsController.php

@@ -1,5 +1,6 @@
 <?php namespace Hpolthof\Translation\Controllers;
 
+use Hpolthof\Translation\ServiceProvider;
 use Hpolthof\Translation\TranslationException;
 use Illuminate\Http\Request;
 use Illuminate\Routing\Controller;
@@ -20,19 +21,21 @@ public function getIndex() {
     }
 
     public function getGroups() {
-        return \DB::table('translations')
+        $query = \DB::table('translations')
             ->select('group')
             ->distinct()
-            ->orderBy('group')
-            ->pluck('group');
+            ->orderBy('group');
+
+        return ServiceProvider::pluckOrLists($query, 'group');
     }
 
     public function getLocales() {
-        return \DB::table('translations')
+        $query = \DB::table('translations')
             ->select('locale')
             ->distinct()
-            ->orderBy('locale')
-            ->pluck('locale');
+            ->orderBy('locale');
+
+        return ServiceProvider::pluckOrLists($query, 'locale');
     }
 
     public function postItems(Request $request) {
@@ -48,8 +51,8 @@ public function postItems(Request $request) {
             ->select('name', 'value')
             ->where('locale', strtolower($request->get('translate')))
             ->where('group', $request->get('group'))
-            ->orderBy('name')
-            ->pluck('value', 'name');
+            ->orderBy('name');
+        $new = ServiceProvider::pluckOrLists($new, 'value', 'name');
 
         foreach($base as &$item) {
             $translate = null;

src/DatabaseLoader.php

@@ -22,10 +22,11 @@ public function __construct(Application $app)
      */
     public function load($locale, $group, $namespace = null)
     {
-        return \DB::table('translations')
+        $query = \DB::table('translations')
             ->where('locale', $locale)
-            ->where('group', $group)
-            ->pluck('value', 'name');
+            ->where('group', $group);
+
+        return ServiceProvider::pluckOrLists($query, 'value', 'name');
     }
 
     /**

src/ServiceProvider.php

@@ -1,5 +1,6 @@
 <?php namespace Hpolthof\Translation;
 
+use Illuminate\Database\Query\Builder;
 use Illuminate\Translation\FileLoader;
 
 class ServiceProvider extends \Illuminate\Translation\TranslationServiceProvider {
@@ -135,4 +136,22 @@ public function provides()
 		return array('translator', 'translation.loader', 'translation.database');
 	}
 
+	/**
+	 * Alternative pluck to stay backwards compatible with Laravel 5.1 LTS.
+	 *
+	 * @param Builder $query
+	 * @param $column
+	 * @param null $key
+	 * @return array|mixed
+	 */
+	public static function pluckOrLists(Builder $query, $column, $key = null)
+	{
+		if(\Illuminate\Foundation\Application::VERSION < '5.2') {
+			$result = $query->lists($column, $key);
+		} else {
+			$result = $query->pluck($column, $key);
+		}
+
+		return $result;
+	}
 }

src/Translator.php

@@ -38,17 +38,20 @@ public function get($key, array $replace = array(), $locale = null, $fallback =
 		// the translator was instantiated. Then, we can load the lines and return.
 		foreach ($this->parseLocale($locale) as $locale)
 		{
-			if(!self::isNamespaced($namespace)) {
-				// Database stuff
-				$this->database->addTranslation($locale, $group, $key);
-			}
-
 			$this->load($namespace, $group, $locale);
 
 			$line = $this->getLine(
 				$namespace, $group, $locale, $item, $replace
 			);
 
+			// If we cannot find the translation group in the database nor as a file
+			// an entry in the database will be added to the translations.
+			// Keep in mind that a file cannot be used from that point.
+			if(!self::isNamespaced($namespace) && is_null($line)) {
+				// Database stuff
+				$this->database->addTranslation($locale, $group, $key);
+			}
+
 			if ( ! is_null($line)) break;
 		}
 
@@ -72,14 +75,32 @@ public function load($namespace, $group, $locale)
 			if(!\Config::get('app.debug') || \Config::get('translation-db.minimal')) {
 				$that = $this;
 				$lines = \Cache::rememberForever('__translations.'.$locale.'.'.$group, function() use ($that, $locale, $group, $namespace) {
-					return $this->database->load($locale, $group, $namespace);
+					return $that->loadFromDatabase($namespace, $group, $locale);
 				});
 			} else {
-				$lines = $this->database->load($locale, $group, $namespace);
+				$lines = $this->loadFromDatabase($namespace, $group, $locale);
 			}
 		} else {
 			$lines = $this->loader->load($locale, $group, $namespace);
 		}
 		$this->loaded[$namespace][$group][$locale] = $lines;
 	}
+
+	/**
+	 * @param $namespace
+	 * @param $group
+	 * @param $locale
+	 * @return array
+	 */
+	protected function loadFromDatabase($namespace, $group, $locale)
+	{
+		$lines = $this->database->load($locale, $group, $namespace);
+
+		if (count($lines) == 0 && \Config::get('translation-db.file_fallback', false)) {
+			$lines = $this->loader->load($locale, $group, $namespace);
+			return $lines;
+		}
+
+		return $lines;
+	}
 }