Module: Preserve

Defined in:
lib/preserve.rb,
lib/preserve/version.rb

Constant Summary collapse

VERSION = 
'0.1.1'

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.filter(name, key) ⇒ Object 



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# File 'lib/preserve.rb', line 4

def self.filter(name, key)
  lambda do
    if params[name].blank?
      value = session[key.to_sym]
      params[name] = value if value.present?
    else
      session[key.to_sym] = params[name]
    end
  end
end

Instance Method Details

#_set_preserve_filter(*args, &block) ⇒ Object 



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# File 'lib/preserve.rb', line 25

def _set_preserve_filter(*args, &block)
  if respond_to?(:before_action)
    before_action(*args, &block)
  else
    before_filter(*args, &block)
  end
end

#preserve(*parameters) ⇒ Object 



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# File 'lib/preserve.rb', line 15

def preserve(*parameters)
  options = parameters.extract_options!
  prefix = options.delete(:prefix)

  parameters.each do |name|
    key = [prefix, controller_name, name].compact.join('_')
    _set_preserve_filter(options, &Preserve.filter(name, key))
  end
end