生产中的数据表中没有记录

Question

我使用rails的Datatables服务器端处理。在开发中一切正常。但在生产中没有显示表中的记录。我看到桌子但没有任何记录。 我用railscasts datatables

编写了应用程序

我在制作中看到的错误是

Completed 500 Internal Server Error in 9ms

NoMethodError (undefined method `page' for #<ActiveRecord::Relation:0xaafff00>):

我的domains_datatable.rb是

class DomainsDatatable
  delegate :params, :h, :link_to, :edit_domain_path, :number_to_currency, to: :@view

  def initialize(view)
    @view = view
  end

  def as_json(options = {})
    {
      sEcho: params[:sEcho].to_i,
      iTotalRecords: Domain.count,
      iTotalDisplayRecords: domains.total_count,
      aaData: data
    }
  end

  private

  def data
    domains.each_with_index.map do |domain, key|
      [
        key+1,
        link_to(domain.name, domain),
        domain.tic,
        domain.indexed,
        domain.pr,
        domain.notes,
        link_to("Edit", edit_domain_path(domain))
      ]
    end
  end

  def domains
    @domains ||= fetch_domains
  end

  def fetch_domains
    domains = Domain.order("#{sort_column} #{sort_direction}")
    domains = domains.page(page).per(per_page)
    if params[:sSearch].present?
      domains = domains.where("name like :search", search: "%#{params[:sSearch]}%")
    end
    domains
  end

  def page
    params[:iDisplayStart].to_i/per_page + 1
  end

  def per_page
    params[:iDisplayLength].to_i > 0 ? params[:iDisplayLength].to_i : 10
  end

  def sort_column
    columns = %w[name tic indexed pr filter registrator created expires hosting]
    columns[params[:iSortCol_0].to_i]
  end

  def sort_direction
    params[:sSortDir_0] == "desc" ? "desc" : "asc"
  end
end