[1822] change query fields for multilingual query

ckanext/multilingual/plugin.py

@@ -1,6 +1,9 @@
 import ckan
 from ckan.plugins import SingletonPlugin, implements, IPackageController
 import pylons
+from pylons import config
+
+LANGS = ['en', 'fr', 'de', 'es', 'it', 'nl', 'ro', 'pt', 'pl']
 
 class MultilingualDataset(SingletonPlugin):
     implements(IPackageController, inherit=True)
@@ -9,6 +12,25 @@ def before_index(self, search_params):
         return search_params
 
     def before_search(self, search_params):
+        lang_set = set(LANGS)
+        current_lang = pylons.request.environ['CKAN_LANG']
+        # fallback to default locale if locale not in suported langs
+        if not current_lang in lang_set:
+            current_lang = config.get('ckan.locale_default')
+        # fallback to english if default locale is not supported
+        if not current_lang in lang_set:
+            current_lang = 'en'
+        # treat current lang differenly so remove from set
+        lang_set.remove(current_lang)
+
+        # weight current lang more highly
+        query_fields = 'title_%s^8 text_%s^4' % (current_lang, current_lang)
+
+        for lang in lang_set:
+            query_fields += ' title_%s^2 text_%s' % (lang, lang)
+
+        search_params['qf'] = query_fields
+
         return search_params
 
     # FIXME: Look for translation in fallback language when none found in