Class: Paperclip::Validators::AttachmentSizeValidator

Inherits:
ActiveModel::Validations::NumericalityValidator
  • Object
show all
Defined in:
lib/paperclip/validators/attachment_size_validator.rb

Constant Summary collapse

AVAILABLE_CHECKS = 
[:less_than, :less_than_or_equal_to, :greater_than, :greater_than_or_equal_to].freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ AttachmentSizeValidator

Returns a new instance of AttachmentSizeValidator.



10
11
12
13
 
# File 'lib/paperclip/validators/attachment_size_validator.rb', line 10

def initialize(options)
  extract_options(options)
  super
end

Class Method Details

.helper_method_name ⇒ Object 



15
16
17
 
# File 'lib/paperclip/validators/attachment_size_validator.rb', line 15

def self.helper_method_name
  :validates_attachment_size
end

Instance Method Details

#check_validity! ⇒ Object 



56
57
58
59
60
 
# File 'lib/paperclip/validators/attachment_size_validator.rb', line 56

def check_validity!
  unless (AVAILABLE_CHECKS + [:in]).any? { |argument| options.key?(argument) }
    raise ArgumentError, "You must pass either :less_than, :greater_than, or :in to the validator"
  end
end

#validate_each(record, attr_name, value) ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
 
# File 'lib/paperclip/validators/attachment_size_validator.rb', line 19

def validate_each(record, attr_name, value)
  base_attr_name = attr_name
  attr_name = "#{attr_name}_file_size".to_sym

  error_attrs = []
  case options[:add_validation_errors_to]
  when :base
    error_attrs << base_attr_name
  when :attribute
    error_attrs << attr_name
  else
    error_attrs << base_attr_name
    error_attrs << attr_name
  end

  value = record.send(:read_attribute_for_validation, attr_name)

  unless value.blank?
    options.slice(*AVAILABLE_CHECKS).each do |option, option_value|
      option_value = option_value.call(record) if option_value.is_a?(Proc)
      option_value = extract_option_value(option, option_value)
      operator = ActiveModel::VERSION::MAJOR >= 7 ? COMPARE_CHECKS[option] : CHECKS[option]

      unless value.send(operator, option_value)
        error_message_key = options[:in] ? :in_between : option
        error_attrs.each do |error_attr_name|
          record.errors.add(error_attr_name, error_message_key, **filtered_options(value).merge(
                                                                  min: min_value_in_human_size(record),
                                                                  max: max_value_in_human_size(record),
                                                                  count: human_size(option_value)
                                                                ))
        end
      end
    end
  end
end