Added db index to siteinterfacedictionary text for optimize

apps/translation/migrations/0008_index_siteifdict_text.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2.7 on 2020-01-17 22:01
+
+import django.contrib.postgres.indexes
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('translation', '0007_language_is_active'),
+    ]
+
+    operations = [
+        migrations.AddIndex(
+            model_name='siteinterfacedictionary',
+            index=django.contrib.postgres.indexes.GinIndex(fields=['text'], name='translation_text_0b2bfa_gin'),
+        ),
+    ]

apps/translation/models.py

@@ -1,5 +1,6 @@
 """Translation app models."""
 from django.contrib.postgres.fields import JSONField
+from django.contrib.postgres.indexes import GinIndex
 from django.db import models
 from django.utils.translation import gettext_lazy as _
 from django.apps import apps
@@ -105,6 +106,9 @@ class SiteInterfaceDictionary(ProjectBaseMixin):
 
         verbose_name = _('Site interface dictionary')
         verbose_name_plural = _('Site interface dictionary')
+        indexes = [
+            GinIndex(fields=['text'])
+        ]
 
     def __str__(self):
         return f'{self.page}: {self.keywords}'