associated_models_validation

🔗 Validating Associated Models

Ensure nested or associated records are valid before saving the parent. Use validates_associated or configure accepts_nested_attributes_for together with validations on child models to enforce integrity.

class Project < ApplicationRecord
  has_many :tasks
  validates_associated :tasks
  accepts_nested_attributes_for :tasks
end

class Task < ApplicationRecord
  belongs_to :project
  validates :name, presence: true
end