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Contents
require "active_model"
module Lookbook
class StringValueCaster < Service
def initialize(value, type = "string")
@value = value.to_s
@type = type.to_s.downcase
@cast_method = :"cast_to_#{@type}"
unless respond_to?(@cast_method)
raise ArgumentError.new "'#{@type}' is not a valid value type to cast to."
end
end
def call
return @nil if @value.empty?
public_send(@cast_method)
rescue => exception
Lookbook.logger.debug "Failed to parse '#{@value}' into a '#{@type}' [#{exception}]"
raise exception
end
def cast_to_string
@value
end
def cast_to_symbol
@value.delete_prefix(":").to_sym if @value.present?
end
def cast_to_hash
result = YamlParser.call(@value)
unless result.is_a?(Hash)
raise ParserError.new "'#{@value}' is not a YAML Hash"
end
result
end
def cast_to_array
result = YamlParser.call(@value)
unless result.is_a?(Array)
raise ParserError.new "'#{@value}' is not a YAML Array"
end
result
end
def cast_to_datetime
DateTime.parse(@value)
end
def active_model_cast
type_class = "ActiveModel::Type::#{@type.camelize}".constantize
type_class.new.cast(@value)
end
alias_method :cast_to_boolean, :active_model_cast
alias_method :cast_to_integer, :active_model_cast
alias_method :cast_to_float, :active_model_cast
end
end
Version data entries
44 entries across 44 versions & 1 rubygems