Class: Attribool::Validators::MethodNameValidator

Inherits:

Object

• Object
• Attribool::Validators::MethodNameValidator

Defined in:

lib/attribool/validators/method_name_validator.rb

Overview

Ensures that if multiple attributes are being defined, and method_name is provided, that method_name is a Proc.

Instance Method Summary

• #error ⇒ ArgumentError

  The exception to raise if validations fail.

• #initialize(method_name, number_of_attributes) ⇒ MethodNameValidator constructor

  Construct the validator.

• #valid? ⇒ Boolean

  Is there either one attribute, or is method_name nil or a Proc?.

Constructor Details

#initialize(method_name, number_of_attributes) ⇒ MethodNameValidator

Construct the validator.

Parameters:

• *items (Attribool::Attribute)

# File 'lib/attribool/validators/method_name_validator.rb', line 12

def initialize(method_name, number_of_attributes)
  @method_name = method_name
  @number_of_attributes = number_of_attributes
end

Instance Method Details

#error ⇒ ArgumentError

The exception to raise if validations fail.

Returns:

• (ArgumentError) —

  the exception with message

# File 'lib/attribool/validators/method_name_validator.rb', line 27

def error
  ArgumentError.new("Must use a Proc when creating multiple methods")
end

#valid? ⇒ Boolean

Is there either one attribute, or is method_name nil or a Proc?

Returns:

• (Boolean)

# File 'lib/attribool/validators/method_name_validator.rb', line 19

def valid?
  @number_of_attributes == 1 || nil_or_proc?
end