Enable identity insert on view's base table

Author: aidanharan

CHANGELOG.md

@@ -1,3 +1,9 @@
+#### Unreleased
+
+#### Fixed
+
+- [#1231](https://github.com/rails-sqlserver/activerecord-sqlserver-adapter/pull/1231) Enable identity insert on view's base table
+
 ## v7.1.7
 
 #### Fixed

lib/active_record/connection_adapters/sqlserver/database_statements.rb

@@ -45,6 +45,9 @@ def internal_exec_query(sql, name = "SQL", binds = [], prepare: false, async: fa
           log(sql, name, binds, async: async) do
             with_raw_connection do |conn|
               if id_insert_table_name = query_requires_identity_insert?(sql)
+                # If the table name is a view, we need to get the base table name for enabling identity insert.
+                id_insert_table_name = view_table_name(id_insert_table_name) if view_exists?(id_insert_table_name)
+                
                 with_identity_insert_enabled(id_insert_table_name, conn) do
                   result = internal_exec_sql_query(sql, conn)
                 end

test/cases/view_test_sqlserver.rb

@@ -47,4 +47,12 @@ class ViewTestSQLServer < ActiveRecord::TestCase
       assert_equal 1, klass.count
     end
   end
+
+  describe 'identity insert' do
+    it "identity insert works with views" do
+      assert_difference("SSTestCustomersView.count", 1) do
+        SSTestCustomersView.create!(id: 5, name: "Bob")
+      end
+    end
+  end
 end