Class: EchoUploads::Mapper

Inherits:
Object
  • Object
show all
Defined in:
lib/echo_uploads/mapper.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Mapper

Returns a new instance of Mapper.



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# File 'lib/echo_uploads/mapper.rb', line 5

def initialize(file)
  unless(
    file.is_a?(ActionDispatch::Http::UploadedFile) or
    file.is_a?(Rack::Test::UploadedFile)
  )
    raise(
      "Expected file to be a ActionDispatch::Http::UploadedFile "+
      "or Rack::Test::UploadedFile, but was #{file.inspect}"
    )
  end
  
  @uploaded_file = file
  @outputs = []
end

Instance Attribute Details

#outputs ⇒ Object (readonly)

Returns the value of attribute outputs.



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# File 'lib/echo_uploads/mapper.rb', line 20

def outputs
  @outputs
end

Instance Method Details

#write(ext) {|path| ... } ⇒ Object

Yields:

  • (path) 


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# File 'lib/echo_uploads/mapper.rb', line 22

def write(ext)
  folder = ::File.join Rails.root, 'tmp/echo_uploads'
  FileUtils.mkdir_p folder
  path = ::File.join(folder, SecureRandom.hex(15) + ext)
  yield path
  # The map callback might not write a file. That could happen if, for example, the
  # input file is an invalid image. The best thing to do here is to fail silently.
  # The application author should write code to handle the failure case, e.g. by
  # appending to the ActiveRecord errors hash.
  if ::File.exists? path
    file = ::File.open path, 'rb'
    mapped_file = ::EchoUploads::MappedFile.new(
      tempfile: file, filename: @uploaded_file.original_filename
    )
    mapped_file.mapped_filename = ::File.basename path
    outputs << mapped_file
  end
end