问题描述
我的堆栈是
红宝石 3.0.0 导轨 6.1.3.1 Mongoid 7.1.2
Mongo 在应该引发其他人时总是抛出相同的异常:
ArgumentError (wrong number of arguments (given 3,expected 1..2))
例如:
我对字段进行了唯一性验证:
irb(main):010:0> Model.create!(field: 'sape')
=> #<Model _id: 606207343dcde26a1595eb48,created_at: 2021-03-29 16:58:28.006091 UTC,updated_at: 2021-03-29 16:58:28.006091 UTC,field: "sape">
irb(main):011:0> Model.create!(field: 'sape')
Traceback (most recent call last):
1: from (irb):11:in `<main>'
ArgumentError (wrong number of arguments (given 3,expected 1..2))
find_by 也一样: 如果响应找到一个,它会检索它:
irb(main):012:0> Model.find_by(field: 'sape')
=> #<Model _id: 606207343dcde26a1595eb48,created_at: 2021-03-29 16:58:28.006 UTC,updated_at: 2021-03-29 16:58:28.006 UTC,field: "sape">
但是如果它不存在:
irb(main):001:0> Model.find_by(field: 'sape')
Traceback (most recent call last):
1: from (irb):1:in `<main>'
ArgumentError (wrong number of arguments (given 2,expected 0..1))
这是我的模型:
class Model
include ActiveModel::Validations
include Mongoid::Document
include Mongoid::Timestamps::Created
include Mongoid::Timestamps::Updated
field :field,type: String,default: nil
index({ field: 1 },{ unique: true })
end
解决方法
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