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.
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# File 'lib/active_storage_validations/dimension_validator.rb', line 9 def initialize() [: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
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# File 'lib/active_storage_validations/dimension_validator.rb', line 120 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
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# File 'lib/active_storage_validations/dimension_validator.rb', line 29 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
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# File 'lib/active_storage_validations/dimension_validator.rb', line 66 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
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# File 'lib/active_storage_validations/dimension_validator.rb', line 51 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 |