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| -rw-r--r-- | guides/source/active_record_migrations.md | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/guides/source/active_record_migrations.md b/guides/source/active_record_migrations.md index 5a550d9e55..628ff8b5bd 100644 --- a/guides/source/active_record_migrations.md +++ b/guides/source/active_record_migrations.md @@ -434,6 +434,8 @@ change_column_default :products, :approved, false This sets `:name` field on products to a `NOT NULL` column and the default value of the `:approved` field to false. +TIP: Unlike `change_column` (and `change_column_default`), `change_column_null` is reversible. + ### Column Modifiers Column modifiers can be applied when creating or changing a column: |