Fixed #26974 -- Added HashIndex to django.contrib.postgres.

Thanks Akshesh Doshi for the initial implementation.

1 files changed, 21 insertions, 1 deletions

diff --git a/django/contrib/postgres/indexes.py b/django/contrib/postgres/indexes.py
index 677c63b4a2..3b77b97f3e 100644
--- a/django/contrib/postgres/indexes.py
+++ b/django/contrib/postgres/indexes.py
@@ -1,7 +1,7 @@
 from django.db.models import Index
 from django.utils.functional import cached_property
 
-__all__ = ['BrinIndex', 'GinIndex', 'GistIndex']
+__all__ = ['BrinIndex', 'GinIndex', 'GistIndex', 'HashIndex']
 
 
 class PostgresIndex(Index):
@@ -98,3 +98,23 @@ class GistIndex(PostgresIndex):
         if self.fillfactor is not None:
             with_params.append('fillfactor = %d' % self.fillfactor)
         return with_params
+
+
+class HashIndex(PostgresIndex):
+    suffix = 'hash'
+
+    def __init__(self, *, fillfactor=None, **kwargs):
+        self.fillfactor = fillfactor
+        super().__init__(**kwargs)
+
+    def deconstruct(self):
+        path, args, kwargs = super().deconstruct()
+        if self.fillfactor is not None:
+            kwargs['fillfactor'] = self.fillfactor
+        return path, args, kwargs
+
+    def get_with_params(self):
+        with_params = []
+        if self.fillfactor is not None:
+            with_params.append('fillfactor = %d' % self.fillfactor)
+        return with_params