Class: Attachment

Inherits:
ApplicationRecord
  • Object
show all
Includes:
Dis::Model, PagesCore::Sweepable
Defined in:
app/models/attachment.rb

Instance Attribute Summary

Attributes included from PagesCore::Sweepable

#cache_swept

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.formats ⇒ Object 



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# File 'app/models/attachment.rb', line 28

def formats
  {
    "audio/mpeg" => :mp3,
    "image/gif" => :gif,
    "image/jpeg" => :jpg,
    "image/jpg" => :jpg,
    "image/pjpeg" => :jpg,
    "image/png" => :png,
    "application/pdf" => :pdf
  }
end

.verifier ⇒ Object 



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# File 'app/models/attachment.rb', line 22

def verifier
  @verifier ||= PagesCore::DigestVerifier.new(
    Rails.application.key_generator.generate_key("attachments")
  )
end

Instance Method Details

#digest ⇒ Object 



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# File 'app/models/attachment.rb', line 41

def digest
  return unless id

  self.class.verifier.generate(id.to_s)
end

#filename_extension ⇒ Object 



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# File 'app/models/attachment.rb', line 55

def filename_extension
  if filename_extension?
    filename.match(/\.([^.]+)$/)[1]
  else
    ""
  end
end

#filename_extension? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/attachment.rb', line 63

def filename_extension?
  filename.include?(".")
end

#format ⇒ Object 



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# File 'app/models/attachment.rb', line 51

def format
  self.class.formats[content_type]
end

#format? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/attachment.rb', line 47

def format?
  content_type && self.class.formats.key?(content_type)
end

#to_param ⇒ Object

Includes a timestamp fingerprint in the URL param, so that rendered images can be cached indefinitely.



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# File 'app/models/attachment.rb', line 69

def to_param
  [id, updated_at.utc.to_fs(cache_timestamp_format)].join("-")
end