How to validate text isn't blank in Rails

Question

if I do

  validates :body, :presence => true, :length => {:maximum => 30000, :message => \' is a bit long...\'}
  validates :body, :length =>         


        

Answer 1

Rails adds the handy method blank? which checks for false, nil and empty strings as described here.
Rails also adds the handy validator allow_blank: false.

So in your case it should be:

validates :body, presence: true, allow_blank: false

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Edit (original answer above):

As stated in the answer below, allow_blank: false is not needed as that's the default behaviour of presence: true.