Module: Knitsearch::HasManyDependent

Extended by:
ActiveSupport::Concern
Defined in:
lib/knitsearch/has_many_dependent.rb

Instance Method Summary collapse

Instance Method Details

#knitsearch_refresh_has_many_parents ⇒ Object 



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# File 'lib/knitsearch/has_many_dependent.rb', line 18

def knitsearch_refresh_has_many_parents
  dependents = Knitsearch.has_many_dependents[self.class]
  return unless dependents

  dependents.each do |dependent|
    parent_class = dependent[:parent]
    inverse_fk_sym = dependent[:inverse_fk]
    shadow_map = dependent[:columns]
    parent_assoc = dependent[:parent_assoc]

    # Determine which parents to update
    parents_to_update = []

    # Current parent (if FK is set)
    current_fk_value = read_attribute(inverse_fk_sym)
    if current_fk_value.present?
      parents_to_update << current_fk_value
    end

    # Previous parent (if FK was changed)
    if saved_change_to_attribute?(inverse_fk_sym)
      old_fk_value = saved_changes[inverse_fk_sym]&.first
      if old_fk_value.present?
        parents_to_update << old_fk_value
      end
    end

    # Update each affected parent
    parents_to_update.uniq.each do |parent_id|
      parent = parent_class.find_by(id: parent_id)
      next unless parent

      # Recompute shadow columns for this parent
      updates = {}
      shadow_map.each do |shadow_col, source_col|
        values = parent.send(parent_assoc).pluck(source_col).compact.map(&:to_s)
        updates[shadow_col] = values.any? ? values.join(" ") : nil
      end

      parent.update_columns(updates)
    end
  end
end