40 lines
No EOL
1.6 KiB
Ruby
40 lines
No EOL
1.6 KiB
Ruby
module Image::AttachmentExtensions
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extend ActiveSupport::Concern
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class_methods do
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def has_one_attached_with_sizes(attribute_name, sizes)
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if sizes.nil? || !sizes.is_a?(Hash) || !sizes.any?
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raise ArgumentError, "You must pass a valid hash of sizes"
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end
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attribute = attribute_name.to_s
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# clean up sizes
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sizes.keys.each do |key|
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value = sizes[key]
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if value.is_a?(Numeric)
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sizes[key] = [value, value]
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elsif value.is_a?(Array) && value.count == 1 && value.all?{|i| i.is_a?(Numeric)}
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sizes[key]= [value[0], value[0]]
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elsif value.is_a?(Array) && value.count == 2 && value.all?{|i| i.is_a?(Numeric)}
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sizes[key] = [value[0], value[1]]
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else
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raise ArgumentError, "#{value.to_s} was not a valid size."
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end
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end
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class_eval <<-RUBY, __FILE__, __LINE__ + 1
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def #{attribute}_by_size(size)
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case (size)
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#{sizes.map do |k,v|
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<<-INNER
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when :#{k.to_sym}
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return #{attribute}.variant(resize: "#{v[0]}x#{v[1]}")
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INNER
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end.join("\n")}
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else
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raise ArgumentError, ":" + size.to_s + " is not a valid size. Valid sizes are: #{sizes.keys.map{|i| ":" + i.to_s}.join(', ')}"
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end
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end
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RUBY
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end
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end
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end |