rails validation reject if form is all whitespace

Question

I'm trying to find a way to reject creation of a message if the form filled out is empty (including spaces and new lines). Currently I have the form set to required: true but that doesn't stop a user from hitting the spacebar and sending the message. I don't know if Rails has a built in validation or if there is some regex I would have to use.

Maybe [this thread](http://stackoverflow.com/questions/15482354/how-to-validate-text-isnt-blank-in-rails) can help. — Wiktor Stribiżew, Feb 16 '17 at 20:03

score 0 · Answer 1 · answered Feb 16 '17 at 20:07

0

You're after a presence validator in your model. It will explicitly require that your field's present? be true, which it won't be if the column contains only whitespace.

answered Feb 16 '17 at 20:07

user229044

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require :attribute, presence: true – KcUS_unico Feb 16 '17 at 20:08
@KcUS_unico No, `validates :attribute, presence: true`. – user229044 Feb 16 '17 at 20:09
Sorry, of course it is: validates :attribute, presence: true – KcUS_unico Feb 16 '17 at 20:34

rails validation reject if form is all whitespace

1 Answers1