Created
April 15, 2021 13:27
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| require "ruby-boolean" | |
| class TypeValidator < ActiveModel::EachValidator | |
| def validate_each(record, attribute, value) | |
| value_to_test = type_before_coercion(record, attribute, value) | |
| expected_type = type_class(options[:with]) | |
| record.errors.add attribute, (options[:message] || "argument of #{record.class} is not of class: #{options[:with].to_s.camelize}. It is class: #{value.class} with value of #{value}") unless value_to_test.is_a?(expected_type) | |
| end | |
| private | |
| def type_class(type) | |
| @type_class ||= type.is_a?(Class) ? type : symbol_class(type) | |
| end | |
| def symbol_class(symbol) | |
| { | |
| array: Array, | |
| boolean: Boolean, | |
| float: Float, | |
| hash: Hash, | |
| integer: Integer, | |
| string: String, | |
| symbol: Symbol, | |
| time: Time, | |
| date: Date, | |
| big_decimal: BigDecimal, | |
| }[symbol] || fail(UnsupportedType, | |
| "Unsupported type #{symbol.to_s.camelize} given for validates_type.") | |
| end | |
| def type_before_coercion(record, attribute, value) | |
| record.try(:"#{attribute}_before_type_cast") || value | |
| end | |
| class UnsupportedType < StandardError; end | |
| end |
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