app/datatables/product_datatable.rb

product_datatable.rb

class ProductDatatable < AjaxDatatablesRails::Base

  def_delegators :@view, :render, :to_price

  def sortable_columns
    @sortable_columns ||= [
        'Product.name',
        'Prototype.name',
        'ProducersDictionary.name',
        'ProductCategory.name',
        'Product.margin'
      ]
  end

  def searchable_columns
    @searchable_columns ||= [
        'Product.name',
        'Prototype.name',
        'ProducersDictionary.name',
        'ProductCategory.name'
      ]
  end

  private

  def data
    records.map do |record|
      [
        record.name,
        record.prototype_name,
        record.producers_dictionary_name,
        record.product_category_name,
        "#{to_price(record.margin)} %",
        render('/products/products_list_buttons', product: record)
      ]
    end
  end

  def get_raw_records
    options[:search_params] ||= {}
    #we join associations inside
    ProductSearch.new(options[:search_params].merge!(current_user: options[:current_user])).search
  end

end