Module: Shrine::Plugins::ValidatePdfPageCount::AttacherMethods

Defined in:
lib/shrine/plugins/validate_pdf_page_count.rb

Constant Summary collapse

TOO_MANY_PAGES = 
'too_many_pages'
TOO_FEW_PAGES = 
'too_few_pages'

Instance Method Summary collapse

Instance Method Details

#get_page_count(file) ⇒ Object (private) 



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# File 'lib/shrine/plugins/validate_pdf_page_count.rb', line 25

def get_page_count(file)
  reader = PDF::Reader.new(file)
  reader.page_count
end

#validate_pdf_page_count(max_pages: nil, min_pages: 1) ⇒ Object 



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# File 'lib/shrine/plugins/validate_pdf_page_count.rb', line 10

def validate_pdf_page_count(max_pages: nil, min_pages: 1)
  return unless get.mime_type == Mime[:pdf].to_s

  file = get.download
  page_count = get_page_count(file)

  if page_count > max_pages
    record.warnings << TOO_MANY_PAGES
  elsif page_count < min_pages
    record.warnings << TOO_FEW_PAGES
  end
end