Class: ApiQueryLanguage::Filtering::Fields::FilterValueCaster

Inherits:
Object
  • Object
show all
Defined in:
lib/api_query_language/filtering/fields/filter_value_caster.rb

Overview

type_caster must duck-type two methods:

.type        → Symbol drawn from SUPPORTED_TYPES
.cast(value) → typed value or nil

The AR column type_caster satisfies this; consumers can inject their own.

Constant Summary collapse

SUPPORTED_TYPES = 
%i[boolean date datetime decimal float integer string text time].freeze
BOOLEAN_TRUE_VALUES = 
%w[1 t T true TRUE True on ON yes Y y].freeze
BOOLEAN_FALSE_VALUES = 
%w[0 f F false FALSE False off OFF no N n].freeze

Instance Method Summary collapse

Constructor Details

#initialize(type_caster, supported_types: SUPPORTED_TYPES) ⇒ FilterValueCaster

Returns a new instance of FilterValueCaster.

Raises:



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# File 'lib/api_query_language/filtering/fields/filter_value_caster.rb', line 15

def initialize(type_caster, supported_types: SUPPORTED_TYPES)
  raise Errors::UnsupportedFieldTypeError.new(type_caster.type) unless supported_types.include?(type_caster.type)

  @type_caster = type_caster
end

Instance Method Details

#cast(value) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/api_query_language/filtering/fields/filter_value_caster.rb', line 21

def cast(value)
  raise ArgumentError, "Value must be a string" unless value.is_a?(String)

  case type
  when :integer, :decimal, :float
    raise Errors::InvalidFieldValueError.new(type, value) unless numeric_value?(value)
    convert_numeric(value)
  when :boolean
    if BOOLEAN_TRUE_VALUES.include?(value)
      true
    elsif BOOLEAN_FALSE_VALUES.include?(value)
      false
    else
      raise Errors::InvalidFieldValueError.new(type, value)
    end
  else
    @type_caster.cast(value).tap do |casted_value|
      raise Errors::InvalidFieldValueError.new(@type_caster.type, value) if casted_value.nil?
    end
  end
end