如何按月查找记录 Datamapper [英] How to find records by month Datamapper

问题描述

在我的项目中，我需要能够添加报告.添加报告的用户可以选择放置报告的日期.(未创建_at)我将此数据保存在日期"中:DataTime - 格式列(2012-03-24T00:00:00+00:00)用户从 datepicker 中选择日期，然后我用 DateTime.parse(2012-03-24) 解析它，然后保存到数据库.比用户通过日期选择器选择一个月.如何正确执行查询以查找特定月份的所有记录?有没有办法按月找?

In my project I need to have ability ti add reports. Adding a report user can choose date for placing his report. (not created_at) I save this data in "Date":DataTime - format column(2012-03-24T00:00:00+00:00) User selects date from datepicker and than i parse it with DateTime.parse(2012-03-24) and than save to DB. Than user via datepicker selects a month. How can I correctly perform a query to find all records for perticular month? Is there any method to find by month?

推荐答案

没有.您应该计算保证金日期并使用 :date =>;range(它将创建 sql BETWEEN 查询).例如:

No. You should calculate margin dates and use :date => range (it will create sql BETWEEN query). For example:

month = params[:month].to_i
date_a = DateTime.new Date.today.year, month, 1
date_b = (date_a >> 1) + 1  # will add a month and a day
Page.all :updated_at => date_a..date_b

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