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我想要验证包含无效日期的日期时间。我正在使用带有 Rails 4 的 Mongoid 4alpha2，在我的模型上我有一个

field :date_of_birth, type: DateTime

当我从控制器为具有“1988/02/30”的 date_of_birth 进行常规“创建”时，模型会以“1988/03/1”的 date_of_birth 保存，而不是像常规 DateTime 那样出现 DateInvalid 错误。 new(1988,2,30) 将在 rails 控制台中。我不确定 moped 或 mongoid 是否绕过了 DateTime 上的 Rails 验证，还有其他人遇到过这种情况吗？

这是rails日志

Started POST "/drivers" for 127.0.0.1 at 2014-01-16 10:42:40 -0500 Processing by DriversController#create as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"LiKx1ZToNVtNL9FAEgyLNNWW7mABy2BPKPwVVcTtXKk=", "driver"=>{"field_worker_name"=>"Field Worker", "hack_number"=>"38924", "first_name"=>"test", "middle_initial"=>"", "last_name"=>"testing", "date_of_birth"=>"1988/02/30", "gender"=>"", "nationality"=>"", "language"=>"", "street"=>"something", "apartment_number"=>"", "city"=>"something", "state"=>"NY", "zip_code"=>"02398", "cell_phone"=>"", "other_phone"=>"", "email"=>"", "dmv_number"=>"", "state_of_residence"=>"", "has_health_insurance"=>"false", "health_plan"=>"", "date_of_recertification"=>""}, "commit"=>"Add Driver"}

MOPED: 127.0.0.1:27017 COMMAND database=admin command={:ismaster=>1} runtime: 0.5280ms

MOPED: 127.0.0.1:27017 QUERY database=healthfund_development collection=users selector={"$query"=>{"_id"=>BSON::ObjectId('52d59524544b38160c000000')}, "$orderby"=>{:_id=>1}} flags=[] limit=-1 skip=0 batch_size=nil fields=nil runtime: 0.4150ms

MOPED: 127.0.0.1:27017 QUERY database=healthfund_development collection=drivers selector={"hack_number"=>38924} flags=[] limit=-1 skip=0 batch_size=nil fields={:_id=>1} runtime: 1.1000ms

MOPED: 127.0.0.1:27017 INSERT database=healthfund_development collection=drivers documents=[{"field_worker_name"=>"Field Worker", "hack_number"=>38924, "first_name"=>"test", "middle_initial"=>"", "last_name"=>"testing", "date_of_birth"=>1988-03-01 00:00:00 UTC, "gender"=>"", "street"=>"something", "apartment_number"=>"", "city"=>"something", "state"=>"NY", "zip_code"=>"02398", "cell_phone"=>"", "other_phone"=>"", "email"=>"", "nationality"=>"", "language"=>"", "dmv_number"=>"", "state_of_residence"=>"", "has_health_insurance"=>false, "health_plan"=>"", "date_of_recertification"=>nil, "_id"=>38924, "updated_at"=>2014-01-16 15:42:40 UTC, "created_at"=>2014-01-16 15:42:40 UTC}] flags=[] COMMAND database=healthfund_development command={:getlasterror=>1, :w=>1} runtime: 3.4590ms Redirected to http://localhost:3000/drivers/38924 Completed 302 Found in 17ms

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1 回答 1

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看起来 Mongoid 将日期解析留给 MongoDB。在 MongoDB shell 中检查它：

> new Date('1988/02/30')
ISODate("1988-03-01T08:00:00Z")

对于JavaScript 的Date构造函数来说，这是完全可以接受的行为：

注意：如果 Date 被调用为具有多个参数的构造函数，如果值大于其逻辑范围（例如，提供 13 作为月份值或 70 作为分钟值），则将调整相邻值。eg new Date(2013,13,1)等价于new Date(2014,1,1)，两者都为 . 创建日期2014-01-01。同样对于其他值：new Date(2013,2,1,0,70)相当于new Date(2013,2,1,1,10)两者都为2013-02-01T01:10:00.

因此，就 MongoDB 而言，1988/02/30是 1988 年加上 2 个月加上 30 天，因为 1988 年是闰年，所以 2 月加上 3 月 1 日的 30 天。

无论如何，您应该使用 a:type => Date作为出生日期。当然，Date具有相同的“像 JavaScript 一样对待它”行为：

class M
  include Mongoid::Document
  field :d, :type => Date
end

m = M.create(:d => '1988/02/30')
m.d
# Tue, 01 Mar 1988

所以这没有多大帮助。

你可以报告一个错误，看看 Mongoid 人是怎么想的。同时，如果你需要更严格的解析，你可以自己做：

field :date_of_birth, :type => Date

def date_of_birth=(date)
  super(Date.parse(date))
end

然后当你说你会得到你的例外Model.create(:date_of_birth => '1988/02/30')。

于 2014-01-17T00:39:34.740 回答