我在应用程序中为 Bill 模式创建了活动管理界面, 并要在索引和过滤搜索的侧边栏中显示统计信息( 类似当前过滤的账单的总数 )。 在侧边栏接缝中, 我可访问 < code> bills 关系, 例如 :
sidebar do
bills.sum(:amount)
end
bills 正确覆盖了当前过滤器的范围:日期、编号等 。
但账单关系只包含30个记录(在页面上显示,30个是默认页形大小),但总共超过300个。 对于当前过滤过的账单(目前选中的过滤器), 我如何获得“ 未页数” 关系?
自己去获取它, 我可以使用 bills. limit(nil) , 以覆盖当前页面选择的相关内容, 并返回全部范围 。
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