Fixed #25579 -- Fixed ArrayField.get_db_prep_value() to allow complex types.

django/contrib/postgres/fields/array.py

@@ -84,7 +84,7 @@ class ArrayField(Field):
 
     def get_db_prep_value(self, value, connection, prepared=False):
         if isinstance(value, list) or isinstance(value, tuple):
-            return [self.base_field.get_db_prep_value(i, connection, prepared) for i in value]
+            return [self.base_field.get_db_prep_value(i, connection, prepared=False) for i in value]
         return value
 
     def deconstruct(self):

tests/postgres_tests/models.py

@@ -31,9 +31,6 @@ class TagField(models.SmallIntegerField):
     def get_prep_value(self, value):
         return value.tag_id
 
-    def get_db_prep_value(self, value, connection, prepared=False):
-        return self.get_prep_value(value)
-
 
 class PostgreSQLModel(models.Model):
     class Meta: