class Admins::SubDisciplinesController < Admins::BaseController

  def index
    @discipline = current_discipline
    @sub_disciplines = current_discipline.sub_disciplines
  end

  def create
    name = params[:name].to_s.strip
    return render_error('名称重复') if current_discipline.sub_disciplines.where(name: name).exists?
    SubDiscipline.create!(name: name, discipline_id: current_discipline.id)
    render_ok
  end

  def edit
    @sub_discipline = current_sub_discipline
  end

  def update
    if params[:sub_discipline] && params[:sub_discipline][:name].present?
      name = params[:sub_discipline][:name].to_s.strip
      current_sub_discipline.update_attributes!(name: name)
    else
      ActiveRecord::Base.transaction do
        current_sub_discipline.update_attributes!(setting_params)
        current_sub_discipline.tag_disciplines.each do |tag|
          tag.update_attributes!(setting_params)
        end
      end
    end
    @sub_disciplines = current_sub_discipline.discipline&.sub_disciplines
  end

  def destroy
    @sub_discipline_id = params[:id]
    current_sub_discipline.destroy!
  end

  private

  def current_sub_discipline
    @_current_sub_discipline = SubDiscipline.find params[:id]
  end

  def current_discipline
    @_current_discipline = Discipline.find params[:discipline_id]
  end

  def setting_params
    params.permit(:shixun, :subject, :question)
  end
end