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Allow passing a Proc or Symbol as an argument to length validator values #30674

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merged 1 commit into from Oct 26, 2017

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@prognostikos
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prognostikos commented Sep 21, 2017

This brings the Length validator in line with the Numericality validator, which currently supports Proc & Symbol arguments.

An example:

class Topic
  include ActiveModel::Validations

  attr_accessor :title, :foo

  validates :title, length: { maximum: ->(topic) { topic.max_length_for_title } }

  def max_length_for_title
    if foo
      5
    else
      10
  end
end
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rails-bot commented Sep 21, 2017

Thanks for the pull request, and welcome! The Rails team is excited to review your changes, and you should hear from @pixeltrix (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

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prognostikos commented Oct 25, 2017

I would love to get rid of my freedom patch for this feature - is there any chance this PR will be accepted? Any feedback is appreciated.

@rafaelfranca

Could you add a CHANGELOG entry and squash your commits? I'll merge after that.

Allow passing a Proc or Symbol as an argument to length validator values
This brings the Length validator in line with the Numericality
validator, which currently supports Proc & Symbol arguments
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prognostikos commented Oct 26, 2017

@rafaelfranca done, thanks for taking care of this.

@rafaelfranca rafaelfranca merged commit 12de5e2 into rails:master Oct 26, 2017

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