Module: CheckForDuplicateAttachedFile::ClassMethods

Defined in:
lib/paperclip_duplicate_check.rb

Overview

Methods added to the class.

Instance Method Summary (collapse)

Instance Method Details

- (Object) check_for_duplicate_attached_file(name, ...)

Marks one or more attachments as performing duplicate checking.

Parameters:

  • name (Symbol) —

    An attachment name.



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# File 'lib/paperclip_duplicate_check.rb', line 21

def check_for_duplicate_attached_file(*names)
  names.each do |name|
    define_method :#{name}_with_dup_check=" do |file|
      attachment = send(name)
      old_fingerprint = attachment.fingerprint
      send :#{name}_without_dup_check=", file
      if attachment.fingerprint == old_fingerprint then
        # restore to saved state
        attachment.instance_variable_set :@queued_for_delete, []
        attachment.instance_variable_set :@queued_for_write, {}
        attachment.instance_variable_set :@errors, {}
        attachment.instance_variable_set :@dirty, false
      end
    end
    alias_method_chain :#{name}=", :dup_check
  end
end