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24 lines
959 B
Ruby
24 lines
959 B
Ruby
# frozen_string_literal: true
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module ActiveStorageFileUtil
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# Method expects instance of ActiveStorage::Blob as argument
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def previewable_document?(blob)
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previewable = Constants::PREVIEWABLE_FILE_TYPES.include?(blob.content_type)
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file_extension = blob.filename.extension
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content_type = blob.content_type
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extensions = %w(.xlsx .docx .pptx .xls .doc .ppt)
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# Mimetype sometimes recognizes Office files as zip files
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# In this case we also check the extension of the given file
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# Otherwise the conversion should fail if the file is being something else
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previewable ||= (content_type == 'application/zip' && extensions.include?(file_extension))
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# Mimetype also sometimes recognizes '.xls' and '.ppt' files as
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# application/x-ole-storage (https://github.com/minad/mimemagic/issues/50)
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previewable ||= (content_type == 'application/x-ole-storage' && %w(.xls .ppt).include?(file_extension))
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previewable
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end
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end
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