Class: Reins::Flash

Inherits:
Object
  • Object
show all
Defined in:
lib/reins/flash.rb

Overview

One-shot flash messages, persisted via the Rack session.

‘flash = v` is readable on the next request and cleared after it. `flash.now = v` is readable on the current request only.

Defined Under Namespace

Classes: NowProxy

Constant Summary collapse

SESSION_KEY = 
"_flash".freeze

Instance Method Summary collapse

Constructor Details

#initialize(session) ⇒ Flash

Returns a new instance of Flash.



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# File 'lib/reins/flash.rb', line 9

def initialize(session)
  @session = session
  @inbound = (session[SESSION_KEY] || {}).dup
  @outbound = {}
  @now_store = {}
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/reins/flash.rb', line 16

def [](key)
  key = key.to_s
  return @now_store[key] if @now_store.key?(key)

  @inbound[key]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/reins/flash.rb', line 23

def []=(key, value)
  @outbound[key.to_s] = value
end

#now ⇒ Object 



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# File 'lib/reins/flash.rb', line 27

def now
  @now ||= NowProxy.new(@now_store)
end

#sweep! ⇒ Object 



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# File 'lib/reins/flash.rb', line 31

def sweep!
  if @outbound.empty?
    @session.delete(SESSION_KEY)
  else
    @session[SESSION_KEY] = @outbound
  end
end