Class: BlockKit::Fixers::NullValue

Inherits:
Base
  • Object
show all
Defined in:
lib/block_kit/fixers/null_value.rb

Instance Method Summary collapse

Methods inherited from Base

#dangerous?

Constructor Details

#initialize(attribute:, **options) ⇒ NullValue

Returns a new instance of NullValue.



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# File 'lib/block_kit/fixers/null_value.rb', line 8

def initialize(attribute:, **options)
  super

  @error_types = options.delete(:error_types) { [:blank] }
end

Instance Method Details

#fix(model, fixing_dangerously: false) ⇒ Object 



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# File 'lib/block_kit/fixers/null_value.rb', line 14

def fix(model, fixing_dangerously: false)
  return if dangerous? && !fixing_dangerously

  model.validate
  errors = errors_for(model)

  return unless errors.any? { |e| error_types.include?(e.type) }

  value = model.attributes[attribute.to_s]

  # First, check if the attribute is an array and if we have an `inclusion` error.
  # If so, we'll remove invalid values from the array. If the new value is empty
  # and this fixer is configured to handle `blank` errors, we'll nullify it.
  if value.is_a?(Enumerable) && (error = errors.find { |e| e.type == :inclusion })
    new_value = value - error.options[:invalid_values]
    new_value = new_value.presence if error_types.include?(:blank)

    model.assign_attributes(attribute => new_value)
  else
    model.assign_attributes(attribute => nil)
  end
end