Module: Essence::FetchOrFallbackHelper

Included in:
ApplicationComponent
Defined in:
app/helpers/essence/fetch_or_fallback_helper.rb

Constant Summary collapse

InvalidValueError = 
Class.new(StandardError)

Instance Method Summary collapse

Instance Method Details

#fetch_or_fallback(allowed_values, given_value, fallback = nil) ⇒ Object 



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# File 'app/helpers/essence/fetch_or_fallback_helper.rb', line 7

def fetch_or_fallback(allowed_values, given_value, fallback = nil)
  if allowed_values.include?(given_value)
    given_value
  else
    if Rails.env.local?
      raise InvalidValueError, <<~MSG
        fetch_or_fallback was called with an invalid value.

        Expected one of: #{allowed_values.inspect}
        Got: #{given_value.inspect}

        This will not raise in production, but will instead fallback to: #{fallback.inspect}
      MSG
    end

    fallback
  end
end

#fetch_or_fallback_boolean(given_value, fallback: false) ⇒ Object 



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# File 'app/helpers/essence/fetch_or_fallback_helper.rb', line 26

def fetch_or_fallback_boolean(given_value, fallback: false)
  if [true, false].include?(given_value)
    given_value
  else
    fallback
  end
end

#integer_or_fallback(given_value, fallback = nil) ⇒ Object 



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# File 'app/helpers/essence/fetch_or_fallback_helper.rb', line 34

def integer_or_fallback(given_value, fallback = nil)
  given_value.is_a?(Integer) ? given_value : fallback
end