搜索后如何在rails中保留复选框参数答案

【问题标题】：How to hold the checkbox params in rails after search搜索后如何在rails中保留复选框参数
【发布时间】：2019-05-14 15:19:07
【问题描述】：

搜索工作正常，但问题是当我根据结果打印 excel 报告时。它显示数据库中的所有值，过滤器不起作用。重新加载整个页面，然后复选框的真实值为走了。刷新页面后如何保持参数

   .row
            .col-md-3
              = check_box_tag "search_customer_supplier[accounts_dealer_types.dealer_code][]","CUS", false
              = label_tag "Organizational Customer"
            .col-md-3
              = check_box_tag "search_customer_supplier[accounts_dealer_types.dealer_code][]", "SUP", false, class: "first_resolution"
              = label_tag "Organzational Supplier"
            .col-md-3
              = check_box_tag "search_customer_supplier[accounts_dealer_types.dealer_code][]", "INDCUS", false, class: "first_resolution"
              = label_tag "Individual Customer"
            .col-md-3
              = check_box_tag "search_customer_supplier[accounts_dealer_types.dealer_code][]", "INDSUP", false, class: "first_resolution"
              = label_tag "Individual Supplier"

这是我的控制器，

    if params[:search].present? or params[:excel_report].present?

      search_customer_supplier = params[:search_customer_supplier]
      if params[:organization_children].present? and search_customer_supplier["id"].present?
        organization_id = search_customer_supplier["id"]
        organization = Organization.find(organization_id)
        anchestor_ids = organization.anchestors.map{|o| o[:member].id }
        search_customer_supplier["id"] = "(#{anchestor_ids.join(' OR ')})" if anchestor_ids.any?
      end
      params[:search_customer_supplier]['accounts_dealer_types.dealer_code'] = params[:search_customer_supplier]['accounts_dealer_types.dealer_code'].join(" OR ") if params[:search_customer_supplier]['accounts_dealer_types.dealer_code'].present?

      @all_address = params[:all_address].to_bool if params[:all_address].present?
      customer_report = params[:search_customer_supplier].map { |k, v| "#{k}:#{v}" if v.present? }.compact
    else
      customer_report = ["accounts_dealer_types.dealer_code:(CUS OR SUP OR INDCUS OR INDSUP)"]
    end

【问题讨论】：

标签： ruby-on-rails ruby ruby-on-rails-3

【解决方案1】：

您可以在第三个参数上使用检查提交的值：

check_box_tag 'search_customer_supplier[accounts_dealer_types.dealer_code]', 'CUS', params[:search_customer_supplier]['accounts_dealer_types.dealer_code'] == 'CUS'

【讨论】：

它给了我一个错误 ``` undefined method `[]' for nil:NilClass ```
我可以使用下面的 params.dig 方法来保存参数的值 ``` = label_tag "Account No:" = text_field_tag "search_customer_supplier[account.account_no]", params.dig('search_customer_supplier ', 'account.account_no'), 类: "form-control", 占位符: "Account No" ```
是的，试试#dig。应该没问题。
**params.dig('search_customer_supplier', 'accounts_dealer_types.dealer_code') == "CUS" ** 完成了。非常感谢
，但它不再容纳一个复选框值。选择两个或一起时，它不会包含params span>

【解决方案2】：

之后，当我分页到第二页时，又引起了另一个问题。

这是分页到下一页时的输出。 https://i.stack.imgur.com/5MDpq.png

下面我提到了代码（在控制器中），我认为是分页时调用的查询。

 params[:search_customer_supplier]['accounts_dealer_types.dealer_code'] = params[:search_customer_supplier]['accounts_dealer_types.dealer_code'].join(" OR ") if params[:search_customer_supplier]['accounts_dealer_types.dealer_code'].present?

【讨论】：