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Showing content from http://rubydoc.info/github/piotrmurach/github/master/Github/Validations/Presence below:

Presence – Documentation for piotrmurach/github (master) – RubyDoc.info

A mixin to help validate presence of non-empty values

• #assert_presence_of(*args) ⇒ Object

  Ensure that essential arguments are present before request is made.

Ensure that essential arguments are present before request is made.

Hash/Array of arguments to be checked against nil and empty string

assert_presence_of user: '...', repo: '...'
assert_presence_of user, repo

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# File 'lib/github_api/validations/presence.rb', line 19

def assert_presence_of(*args)
  hash = args.last.is_a?(::Hash) ? args.pop : {}

  errors = hash.select { |key, val| val.to_s.empty? }
  raise Github::Error::Validations.new(errors) unless errors.empty?

  args.each do |arg|
    raise ArgumentError, "parameter cannot be nil" if arg.nil?
  end
end

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