translated field into serializer

apps/search_indexes/documents/news.py

@@ -1,6 +1,7 @@
 """News app documents."""
 from django.conf import settings
 from django_elasticsearch_dsl import Document, Index, fields
+from search_indexes.utils import OBJECT_FIELD_PROPERTIES
 from news import models
 
 
@@ -16,9 +17,9 @@ class NewsDocument(Document):
         'id': fields.IntegerField(),
         'name': fields.KeywordField()
     })
-    title = fields.ObjectField()
-    subtitle = fields.ObjectField()
-    description = fields.ObjectField()
+    title = fields.ObjectField(properties=OBJECT_FIELD_PROPERTIES)
+    subtitle = fields.ObjectField(properties=OBJECT_FIELD_PROPERTIES)
+    description = fields.ObjectField(properties=OBJECT_FIELD_PROPERTIES)
     country = fields.NestedField(properties={
         'id': fields.IntegerField(),
         'code': fields.KeywordField()
@@ -45,5 +46,3 @@ class NewsDocument(Document):
 
     def prepare_description(self, instance):
         return instance.description
-
-

apps/search_indexes/serializers.py

@@ -2,13 +2,15 @@
 from rest_framework import serializers
 from django_elasticsearch_dsl_drf.serializers import DocumentSerializer
 from search_indexes.documents.news import NewsDocument
-from utils.models import get_current_language
+from search_indexes.utils import get_translated_value
 
 
 class NewsDocumentSerializer(DocumentSerializer):
     """News document serializer."""
 
     title_translated = serializers.SerializerMethodField(allow_null=True)
+    subtitle_translated = serializers.SerializerMethodField(allow_null=True)
+    description_translated = serializers.SerializerMethodField(allow_null=True)
 
     class Meta:
         """Meta class."""
@@ -21,10 +23,18 @@ class NewsDocumentSerializer(DocumentSerializer):
             'description',
             'web_url',
             'title_translated',
+            'subtitle_translated',
+            'description_translated',
         )
 
-    def get_title_translated(self, obj):
-        title_dict = obj.title
-        if not isinstance(title_dict, dict):
-            title_dict = obj.title.to_dict()
-        return title_dict.get(get_current_language())
+    @staticmethod
+    def get_title_translated(obj):
+        return get_translated_value(obj.title)
+
+    @staticmethod
+    def get_subtitle_translated(obj):
+        return get_translated_value(obj.subtitle)
+
+    @staticmethod
+    def get_description_translated(obj):
+        return get_translated_value(obj.description)

apps/search_indexes/utils.py

@@ -0,0 +1,19 @@
+"""Search indexes utils."""
+from django_elasticsearch_dsl import fields
+from utils.models import get_current_language
+
+
+# object field properties
+OBJECT_FIELD_PROPERTIES = {
+    'en-GB': fields.TextField(analyzer='english'),
+    'ru-RU': fields.TextField(analyzer='russian'),
+}
+
+
+# todo: refactor serializer
+def get_translated_value(value):
+    if value is None:
+        return None
+    elif not isinstance(value, dict):
+        field_dict = value.to_dict()
+    return field_dict.get(get_current_language())