Class: ActiveStorageValidations::Metadata

Inherits:
Object
  • Object
show all
Defined in:
lib/active_storage_validations/metadata.rb

Defined Under Namespace

Classes: InvalidImageError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Metadata

Returns a new instance of Metadata.



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# File 'lib/active_storage_validations/metadata.rb', line 7

def initialize(file)
  require_image_processor
  @file = file
end

Instance Attribute Details

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'lib/active_storage_validations/metadata.rb', line 5

def file
  @file
end

Instance Method Details

#exception_class ⇒ Object 



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# File 'lib/active_storage_validations/metadata.rb', line 16

def exception_class
  if image_processor == :vips && defined?(Vips)
    Vips::Error
  elsif defined?(MiniMagick)
    MiniMagick::Error
  end
end

#image_processor ⇒ Object 



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# File 'lib/active_storage_validations/metadata.rb', line 12

def image_processor
  Rails.application.config.active_storage.variant_processor
end

#metadata ⇒ Object 



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# File 'lib/active_storage_validations/metadata.rb', line 32

def metadata
  read_image do |image|
    if rotated_image?(image)
      { width: image.height, height: image.width }
    else
      { width: image.width, height: image.height }
    end
  end
rescue InvalidImageError
  logger.info "Skipping image analysis because ImageMagick or Vips doesn't support the file"
  {}
end

#require_image_processor ⇒ Object 



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# File 'lib/active_storage_validations/metadata.rb', line 24

def require_image_processor
  if image_processor == :vips
    require 'vips' unless defined?(Vips)
  else
    require 'mini_magick' unless defined?(MiniMagick)
  end
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_storage_validations/metadata.rb', line 45

def valid?
  read_image
  true
rescue InvalidImageError
  false
end