Class: Grape::Validations::ValuesValidator

Inherits:
Base
  • Object
show all
Defined in:
lib/grape/validations/validators/values.rb

Instance Attribute Summary

Attributes inherited from Base

#attrs

Instance Method Summary collapse

Methods inherited from Base

convert_to_short_name, #fail_fast?, inherited, #message, #options_key?, #validate, #validate!

Constructor Details

#initialize(attrs, options, required, scope, opts = {}) ⇒ ValuesValidator

Returns a new instance of ValuesValidator.



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# File 'lib/grape/validations/validators/values.rb', line 4

def initialize(attrs, options, required, scope, opts = {})
  @excepts = (options_key?(:except, options) ? options[:except] : [])
  @values = (options_key?(:value, options) ? options[:value] : [])

  @values = options if @excepts == [] && @values == []
  super
end

Instance Method Details

#validate_param!(attr_name, params) ⇒ Object

Raises:



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# File 'lib/grape/validations/validators/values.rb', line 12

def validate_param!(attr_name, params)
  return unless params.is_a?(Hash)
  return unless params[attr_name] || required_for_root_scope?

  values = @values.is_a?(Proc) ? @values.call : @values
  excepts = @excepts.is_a?(Proc) ? @excepts.call : @excepts
  param_array = params[attr_name].nil? ? [nil] : Array.wrap(params[attr_name])

  if param_array.all? { |param| excepts.include?(param) }
    raise Grape::Exceptions::Validation, params: [@scope.full_name(attr_name)], message: except_message
  end

  return if (values.is_a?(Array) && values.empty?) || param_array.all? { |param| values.include?(param) }
  raise Grape::Exceptions::Validation, params: [@scope.full_name(attr_name)], message: message(:values)
end