Class: ActiveStorageValidations::DimensionValidator
- Inherits:
-
ActiveModel::EachValidator
- Object
- ActiveModel::EachValidator
- ActiveStorageValidations::DimensionValidator
- Defined in:
- lib/active_storage_validations/dimension_validator.rb
Overview
:nodoc
Constant Summary collapse
- AVAILABLE_CHECKS =
%i[width height min max].freeze
Instance Method Summary collapse
- #add_error(record, attribute, type, **attrs) ⇒ Object
- #check_validity! ⇒ Object
-
#initialize(options) ⇒ DimensionValidator
constructor
A new instance of DimensionValidator.
- #is_valid?(record, attribute, file_metadata) ⇒ Boolean
-
#validate_each(record, attribute, _value) ⇒ Object
Rails 5.
Constructor Details
#initialize(options) ⇒ DimensionValidator
Returns a new instance of DimensionValidator.
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 |
# File 'lib/active_storage_validations/dimension_validator.rb', line 9 def initialize() require 'mini_magick' unless defined?(MiniMagick) [:width, :height].each do |length| if [length] and [length].is_a?(Hash) if range = [length][:in] raise ArgumentError, ":in must be a Range" unless range.is_a?(Range) [length][:min], [length][:max] = range.min, range.max end end end [:min, :max].each do |dim| if range = [dim] raise ArgumentError, ":#{dim} must be a Range (width..height)" unless range.is_a?(Range) [:width] = { dim => range.first } [:height] = { dim => range.last } end end super end |
Instance Method Details
#add_error(record, attribute, type, **attrs) ⇒ Object
122 123 124 125 126 |
# File 'lib/active_storage_validations/dimension_validator.rb', line 122 def add_error(record, attribute, type, **attrs) key = [:message].presence || type return if record.errors.added?(attribute, key) record.errors.add(attribute, key, **attrs) end |
#check_validity! ⇒ Object
31 32 33 34 |
# File 'lib/active_storage_validations/dimension_validator.rb', line 31 def check_validity! return true if AVAILABLE_CHECKS.any? { |argument| .key?(argument) } raise ArgumentError, 'You must pass either :width, :height, :min or :max to the validator' end |
#is_valid?(record, attribute, file_metadata) ⇒ Boolean
68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 |
# File 'lib/active_storage_validations/dimension_validator.rb', line 68 def is_valid?(record, attribute, ) # Validation fails unless file metadata contains valid width and height. if [:width].to_i <= 0 || [:height].to_i <= 0 add_error(record, attribute, [:message].presence || :image_metadata_missing) return false end # Validation based on checks :min and :max (:min, :max has higher priority to :width, :height). if [:min] || [:max] if [:min] && ( ([:width][:min] && [:width] < [:width][:min]) || ([:height][:min] && [:height] < [:height][:min]) ) add_error(record, attribute, [:message].presence || :"dimension_min_inclusion", width: [:width][:min], height: [:height][:min]) return false end if [:max] && ( ([:width][:max] && [:width] > [:width][:max]) || ([:height][:max] && [:height] > [:height][:max]) ) add_error(record, attribute, [:message].presence || :"dimension_max_inclusion", width: [:width][:max], height: [:height][:max]) return false end # Validation based on checks :width and :height. else [:width, :height].each do |length| next unless [length] if [length].is_a?(Hash) if [length][:in] && ([length] < [length][:min] || [length] > [length][:max]) add_error(record, attribute, [:message].presence || :"dimension_#{length}_inclusion", min: [length][:min], max: [length][:max]) return false else if [length][:min] && [length] < [length][:min] add_error(record, attribute, [:message].presence || :"dimension_#{length}_greater_than_or_equal_to", length: [length][:min]) return false end if [length][:max] && [length] > [length][:max] add_error(record, attribute, [:message].presence || :"dimension_#{length}_less_than_or_equal_to", length: [length][:max]) return false end end else if [length] != [length] add_error(record, attribute, [:message].presence || :"dimension_#{length}_equal_to", length: [length]) return false end end end end true # valid file end |
#validate_each(record, attribute, _value) ⇒ Object
Rails 5
53 54 55 56 57 58 59 60 61 62 63 64 65 |
# File 'lib/active_storage_validations/dimension_validator.rb', line 53 def validate_each(record, attribute, _value) return true unless record.send(attribute).attached? changes = record.[attribute.to_s] return true if changes.blank? files = Array.wrap(changes.is_a?(ActiveStorage::Attached::Changes::CreateMany) ? changes.attachables : changes.attachable) files.each do |file| = Metadata.new(file). next if is_valid?(record, attribute, ) break end end |