Question

我希望日期更强超过一个特定日期，或者更小，或者两个给定日期 arel 。这是我的控制者：

@from_time = search[:value][:from_time] @to_time = search[:value][:to_time] letters_query = letters[@key].between(@from_time..@to_time) @letters = Letter.joins(:official).where(letters_query)

这是 json 我传入我的控制器

Parameters: {"query"=>{"search"=>{"0"=>{"key"=>"letter_date", "value"=>{"from_time"=>"01/09/1395", "to_time"=>"30/09/1395"}, "type"=>"date"}}}}

我确定要获取参数，要注意我的日期是太阳能类！它会返回错误：

If you are passing user input to a predicate, you must either give an appropriate type caster object to the `Arel::Table`, or manually cast the value before passing it to Arel. DEPRECATION WARNING: Passing a column to `quote` has been deprecated. It is only used for type casting, which should be handled elsewhere. See https://github.com/rails/arel/commit/6160bfbda1d1781c3b08a33ec4955f170e95be11 for more information. (called from p at /home/afsane/Desktop/Afsane Development/Production/isecretariat/app/controllers/searches_controller.rb:511) DEPRECATION WARNING: table_exists? is deprecated and will be removed from Rails 5.1 (use #data_source_exists? instead) (called from p at /home/afsane/Desktop/Afsane Development/Production/isecretariat/app/controllers/searches_controller.rb:511) Arel performing automatic type casting is deprecated, and will be removed in Arel 8.0. If you are seeing this, it is because you are manually passing a value to an Arel predicate, and the `Arel::Table` object was constructed manually. The easiest way to remove this warning is to use an `Arel::Table` object returned from calling `arel_table` on an ActiveRecord::Base subclass. If you're certain the value is already of the right type, change `attribute.eq(value)` to `attribute.eq(Arel::Nodes::Quoted.new(value))` (you will be able to remove that in Arel 8.0, it is only required to silence this deprecation warning). You can also silence this warning globally by setting `$arel_silence_type_casting_deprecation` to `true`. (Do NOT do this if you are a library author) If you are passing user input to a predicate, you must either give an appropriate type caster object to the `Arel::Table`, or manually cast the value before passing it to Arel.

对于greated和更小的我使用了这个：

letters_query = officials[@key].lt(@to_time) letters_query = officials[@key].gt(@from_time)

我测试了很多，所有问题都来自行：

@letters = Letter.joins(:official).where(letters_query)

任何想法？

Answer 1

使用arel，这是如何为日期生成合适的查询：

letters = Letter.arel_table
@letter = Letter.where(letters[:date].between(Date.new(2016,08,24)..Date.new(2016,09,24))

Answer 2

我认为你可以在这里使用parsi-date作为宝石中的年份，你的问题看起来与我相似。您需要相应地解析查询参数。如果数据库中存储的日期是基督徒日历格式，您将执行to_gregorian。

@from_time = Parsi::Date.parse(search[:value][:from_time]).to_gregorian
@to_time = Parsi::Date.parse(search[:value][:to_time]).to_gregorian

获取日期查询使用arel和gt在rails

2 个答案: