验证该值是否在一定范围内，例如1＆LT; = VAL＆LT; = 2 [英] Validate that a value is in a certain range, e.g. 1 <= val <=2

问题描述

我想验证数字：值将在1或2

 验证：值：格式=＆GT; {：带=＆GT; / 1 | 2 /，：消息=＆GT; 选择号码..}
 

然而，上述code失败验证时，价值== 1

请确保您的解决方案允许我补充一个消息的确认。

解决方案

 验证：价值：包括=＆GT; {：在=＆GT;并[1,2]}
 

请参阅<一href="http://apidock.com/rails/ActiveModel/Validations/HelperMethods/validates_inclusion_of">http://apidock.com/rails/ActiveModel/Validations/HelperMethods/validates_inclusion_of

I want to validate a number :value to be within 1 or 2

validates :value, :format => { :with => /1|2/, :message => "Select number.." }

However, the above code is failing the validation when value == 1

Please ensure that your solution allows me to add a message for the validation.

解决方案

validates :value, :inclusion => {:in => [1,2]}

See http://apidock.com/rails/ActiveModel/Validations/HelperMethods/validates_inclusion_of

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