Module: KMZCompressor::ControllerExtensions::InstanceMethods

Defined in:
lib/kmz_compressor/controller_extensions.rb

Instance Method Summary collapse

Instance Method Details

#render_202_while_caching(&action) ⇒ Object

Subsequent calls to this action return a 202 while the original result is being cached



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# File 'lib/kmz_compressor/controller_extensions.rb', line 14

def render_202_while_caching(&action)
  cache_key = [:kmz_in_progress, Digest::SHA256.base64digest(params.inspect)]

  if Rails.cache.exist?(cache_key)
    render :status => 202, :nothing => true
  else
    begin
      Rails.cache.write(cache_key, true, :expires_in => 1.hour) # Expire in case we somehow leave the cache key behind
      action.call
    ensure
      Rails.cache.delete(cache_key)
    end
  end
end