Rails Friendly ID: slug is not generated on model.new or model.import

Question

Hi I am using friendly_id gem,

class Student < ActiveRecord::Base
  extend FriendlyId
  friendly_id :name, use: :slugged

Here Student.create generates a slug as name as required.

But in my case, I am creating array of Student using 'new' method and saving to database using active-record-import

student_names.uniq.each do |s|
  students << Student.new(name: s)
end

Student.import students, on_duplicate_key_update: {
    conflict_target: [:name],
    timestamps: true
}

On 'new', it doesn't create slug and also on import.

How can I generate slug on import? Thanks in advance

Answer 1

FriendlyId uses a before_validation callback to generate and set the slug (doc), but activerecord-import does NOT call ActiveRecord callbacks ...(wiki).

So, you need to call before_validation callbacks manually:

students.each do |student|
  # Note: if you do not pass the `{ false }` block, `after_callback` will be called and slug will be cleared.
  student.run_callbacks(:validation) { false }
end
Student.import ...