Class: Mutations::FileFilter

Inherits:
AdditionalFilter show all
Defined in:
lib/mutations/file_filter.rb

Instance Attribute Summary

Attributes inherited from InputFilter

#options

Instance Method Summary collapse

Methods inherited from AdditionalFilter

inherited

Methods inherited from InputFilter

#default, default_options, #discard_empty?, #discard_invalid?, #discard_nils?, #has_default?, #initialize

Constructor Details

This class inherits a constructor from Mutations::InputFilter

Instance Method Details

#filter(data) ⇒ Object 



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# File 'lib/mutations/file_filter.rb', line 9

def filter(data)

  # Handle nil case
  if data.nil?
    return [nil, nil] if options[:nils]
    return [nil, :nils]
  end
  
  # Now check if it's empty:
  return [data, :empty] if data == ""

  # Ensure the data responds to each of the methods
  methods = [:read, :size]
  methods.concat([:original_filename, :content_type]) if options[:upload]
  methods.each do |method|
    return [data, :file] unless data.respond_to?(method)
  end

  if options[:size].is_a?(Integer)
    return [data, :size] if data.size > options[:size]
  end

  # We win, it's valid!
  [data, nil]
end