Class: ActiveStorage::Transformers::ImageProcessingTransformer
Relationships & Source Files | |
Namespace Children | |
Exceptions:
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Super Chains via Extension / Inclusion / Inheritance | |
Class Chain:
self,
Transformer
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Instance Chain:
self,
Transformer
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Inherits: |
ActiveStorage::Transformers::Transformer
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Defined in: | activestorage/lib/active_storage/transformers/image_processing_transformer.rb |
Class Method Summary
Transformer
- Inherited
Instance Attribute Summary
Transformer
- Inherited
Instance Method Summary
- #operations
- #process(file, format:)
- #processor
- #validate_arg_array(argument)
- #validate_arg_hash(argument)
- #validate_arg_string(argument)
- #validate_transformation(name, argument)
Transformer
- Inherited
#transform | Applies the transformations to the source image in |
#process | Returns an open Tempfile containing a transformed image in the given |
Constructor Details
This class inherits a constructor from ActiveStorage::Transformers::Transformer
Instance Method Details
#operations
[ GitHub ]# File 'activestorage/lib/active_storage/transformers/image_processing_transformer.rb', line 32
def operations transformations.each_with_object([]) do |(name, argument), list| if ActiveStorage.variant_processor == :mini_magick validate_transformation(name, argument) end if name.to_s == "combine_options" raise ArgumentError, <<~ERROR.squish Active Storage's ImageProcessing transformer doesn't support :combine_options, as it always generates a single command. ERROR end if argument.present? list << [ name, argument ] end end end
#process(file, format:)
[ GitHub ]# File 'activestorage/lib/active_storage/transformers/image_processing_transformer.rb', line 19
def process(file, format:) processor. source(file). loader(page: 0). convert(format). apply(operations). call end
#processor
[ GitHub ]# File 'activestorage/lib/active_storage/transformers/image_processing_transformer.rb', line 28
def processor ImageProcessing.const_get(ActiveStorage.variant_processor.to_s.camelize) end
#validate_arg_array(argument)
[ GitHub ]# File 'activestorage/lib/active_storage/transformers/image_processing_transformer.rb', line 79
def validate_arg_array(argument) argument.each do |arg| if arg.is_a?(Integer) || arg.is_a?(Float) next elsif arg.is_a?(String) || arg.is_a?(Symbol) validate_arg_string(arg) elsif arg.is_a?(Array) validate_arg_array(arg) elsif arg.is_a?(Hash) validate_arg_hash(arg) end end end
#validate_arg_hash(argument)
[ GitHub ]# File 'activestorage/lib/active_storage/transformers/image_processing_transformer.rb', line 93
def validate_arg_hash(argument) argument.each do |key, value| validate_arg_string(key) if value.is_a?(Integer) || value.is_a?(Float) next elsif value.is_a?(String) || value.is_a?(Symbol) validate_arg_string(value) elsif value.is_a?(Array) validate_arg_array(value) elsif value.is_a?(Hash) validate_arg_hash(value) end end end
#validate_arg_string(argument)
# File 'activestorage/lib/active_storage/transformers/image_processing_transformer.rb', line 71
def validate_arg_string(argument) unsupported_arguments = ActiveStorage.unsupported_image_processing_arguments.any? do |bad_arg| argument.to_s.downcase.include?(bad_arg) end raise UnsupportedImageProcessingArgument if unsupported_arguments end
#validate_transformation(name, argument)
[ GitHub ]# File 'activestorage/lib/active_storage/transformers/image_processing_transformer.rb', line 51
def validate_transformation(name, argument) method_name = name.to_s.tr("-", "_") unless ActiveStorage.supported_image_processing_methods.any? { |method| method_name == method } raise UnsupportedImageProcessingMethod, <<~ERROR.squish One or more of the provided transformation methods is not supported. ERROR end if argument.present? if argument.is_a?(String) || argument.is_a?(Symbol) validate_arg_string(argument) elsif argument.is_a?(Array) validate_arg_array(argument) elsif argument.is_a?(Hash) validate_arg_hash(argument) end end end