ajax-datatables-rails Rails 5.1 fix

base.rb

def sort_records(records)
    sort_by = []

    params[:order].to_unsafe_h.each do |item|
      sort_by << "#{sort_column(item[1]["column"])} #{sort_direction(item[1]["dir"])}"
    end
    records.order(sort_by.join(", "))
  end

  def sort_column(item)
    new_sort_column(item)
    rescue
      ::AjaxDatatablesRails::Base.deprecated '[DEPRECATED] Using table_name.column_name notation is deprecated. Please refer to: https://github.com/antillas21/ajax-datatables-rails#searchable-and-sortable-columns-syntax'
      deprecated_sort_column(item)
  end

  def sort_direction(item)
    options = %w(desc asc)
    options.include?(item) ? item.upcase : 'ASC'
  end

  def new_sort_column(item)
    model, column = sortable_columns[sortable_displayed_columns.index(item.to_i)].split('.')
    col = [model.constantize.table_name, column].join('.')
  end


  def generate_sortable_displayed_columns
    @sortable_displayed_columns = []
    params[:columns].to_unsafe_h.each do |column|
      @sortable_displayed_columns << column[1]["data"].to_i if column[1]["orderable"] == 'true'
    end
    @sortable_displayed_columns
  end