I have two models user_item and user_item_images.
user_item.rb
has_many :user_item_images, dependent: :destroy
validates :user_item_images, presence: { message: "You must include a picture" }
user_item_images.rb
belongs_to :user_item
I have a nested form with only one user_item_image field which is :picture. When I submit an empty form I get this message
User item images You must include a picture
How do I make it so that the message instead says
You must include a picture
I don't know how to edit the en.yml file because the error is on the presence of another model and not an attribute of a model.
I looked here but the answer is too broad and I think I need a custom validation.
Create a custom validation instead:
has_many :user_item_images, dependent: :destroy
validate :has_a_picture
private
def has_a_picture
errors.add(:base, 'You must include a picture') if user_item_images.none?
end