Class: SmartParams::Field

Inherits:
Object
  • Object
show all
Defined in:
lib/smart_params/field.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path:, type:, optional: false) ⇒ Field

Returns a new instance of Field.



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# File 'lib/smart_params/field.rb', line 8

def initialize(path:, type:, optional: false, **)
  @path = path
  @type = type
  @optional = !!optional
end

Instance Attribute Details

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/smart_params/field.rb', line 5

def path
  @path
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/smart_params/field.rb', line 6

def type
  @type
end

Instance Method Details

#map(raw) ⇒ Object 



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# File 'lib/smart_params/field.rb', line 14

def map(raw)
  case [*dig_until(@path, raw), @type, @type&.optional? || @optional]
  in [:error, last, _, false]
    [:error, SmartParams::MissingPropertyException.new(path:, last:)]
  in [:error, _, _, true]
    :skip
  in [:ok, value, nil, _]
    [:ok, value]
  in [:ok, value, type, _]
    type.try(value)
  end
rescue Dry::Types::ConstraintError => constraint_error
  Dry::Types::Result::Failure.new(value, constraint_error)
end

#update_in(result, value) ⇒ Object 



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# File 'lib/smart_params/field.rb', line 29

def update_in(result, value)
  *body, butt = @path

  result.dup.tap do |tree|
    body.reduce(tree) do |mapping, key|
      mapping[key]
    end.store(butt, value)
  end
end