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| -rw-r--r-- | guides/source/active_record_validations_callbacks.md | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/guides/source/active_record_validations_callbacks.md b/guides/source/active_record_validations_callbacks.md index 3c6e459453..6f1c0b6c24 100644 --- a/guides/source/active_record_validations_callbacks.md +++ b/guides/source/active_record_validations_callbacks.md @@ -381,6 +381,14 @@ class LineItem < ActiveRecord::Base end ``` +You should also be sure to have a proper `:inverse_of` as well: + +```ruby +class Order < ActiveRecord::Base + has_many :line_items, inverse_of: :order +end +``` + If you validate the presence of an object associated via a `has_one` or `has_many` relationship, it will check that the object is neither `blank?` nor `marked_for_destruction?`. Since `false.blank?` is true, if you want to validate the presence of a boolean field you should use `validates :field_name, inclusion: { in: [true, false] }`. |