mongoid validates array has at least 1 element

Question

We have

class Event
  include Mongoid::Document
  field :categories, type: Array, default: []
end

How to validate an event object to have at least 1 element in categories? Should I use custom validator? Thank you

nort · Accepted Answer · 2014-07-05 05:31:30Z

4

class Event
  include Mongoid::Document
  field :categories, type: Array, default: []

  validates :categories, length: { minimum: 1 }
end

answered Jul 5, 2014 at 5:31

nort

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2 Comments

Has anyone tested the solution given in this answer?

I did test it. This actually works. You should mark this answer as correct Yudho. Thanks nort.