spree-contrib/spree-product-assembly

class Spree::Admin::PartsController < Spree::Admin::BaseController
  helper_method :product

  def index
    @parts = product.assemblies_parts.includes(:assembly, :part)
  end

  def remove
    assembly_part = Spree::AssembliesPart.find(params[:id])
    assembly_part.destroy
    render 'spree/admin/parts/update_parts_table'
  end

  def set_count
    save_part(existing_part_params)
  end

  def available
    if params[:q].blank?
      @available_products = []
    else
      query = "%#{params[:q]}%"
      @available_products = Spree::Product.search_can_be_part(query).distinct!
    end
    respond_to do |format|
      format.html {render :layout => false}
      format.js {render :layout => false}
    end
  end

  def create
    save_part(new_part_params)
  end

  private

    def save_part(part_params)
      form = Spree::AssignPartToBundleForm.new(product, part_params)
      if form.submit
        render 'spree/admin/parts/update_parts_table'
      else
        error_message = form.errors.full_messages.to_sentence
        render json: error_message.to_json, status: 422
      end
    end

    def product
      @product ||= Spree::Product.find_by(slug: params[:product_id])
    end

    def new_part_params
      params.require(:assemblies_part).permit(
        :count,
        :part_id,
        :assembly_id,
        :variant_selection_deferred
      )
    end

    def existing_part_params
      params.permit(:id, :count)
    end
end