Module: Roda::RodaPlugins::SharedVars::InstanceMethods

Defined in:
lib/roda/plugins/shared_vars.rb

Instance Method Summary collapse

Instance Method Details

#shared(vars = nil) ⇒ Object

Returns the current shared vars for the request. These are stored in the request's environment, so they will be implicitly shared with other apps using this plugin.

If the vars argument is given, it should be a hash that will be merged into the current shared vars.

If a block is given, a vars argument must be provided, and it will only make the changes to the shared vars for the duration of the block, restoring the previous shared vars before the block returns.



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# File 'lib/roda/plugins/shared_vars.rb', line 61

def shared(vars=nil)
  h = env['roda.shared'] ||= {}

  if defined?(yield)
    if vars
      begin
        env['roda.shared'] = h.merge(vars)
        yield
      ensure
        env['roda.shared'] = h
      end
    else
      raise RodaError, "must pass a vars hash when calling shared with a block"
    end
  elsif vars
    h.merge!(vars)
  end

  h
end