# File lib/action_dispatch/middleware/flash.rb, line 97 def [](k) @flashes[k] end
Convenience accessor for flash
# File lib/action_dispatch/middleware/flash.rb, line 196 def alert self[:alert] end
Convenience accessor for flash=
# File lib/action_dispatch/middleware/flash.rb, line 201 def alert=(message) self[:alert] = message end
# File lib/action_dispatch/middleware/flash.rb, line 128 def clear @flashes.clear end
# File lib/action_dispatch/middleware/flash.rb, line 160 def close!; @closed = true; end
# File lib/action_dispatch/middleware/flash.rb, line 115 def delete(key) @flashes.delete key self end
Marks the entire flash or a single flash entry to be discarded by the end of the current action:
flash.discard # discard the entire flash at the end of the current action flash.discard(:warning) # discard only the "warning" entry at the end of the current action
# File lib/action_dispatch/middleware/flash.rb, line 174 def discard(k = nil) use(k) end
# File lib/action_dispatch/middleware/flash.rb, line 132 def each(&block) @flashes.each(&block) end
# File lib/action_dispatch/middleware/flash.rb, line 124 def empty? @flashes.empty? end
# File lib/action_dispatch/middleware/flash.rb, line 83 def initialize_copy(other) if other.now_is_loaded? @now = other.now.dup @now.flash = self end super end
Keeps either the entire current flash or a specific flash entry available for the next action:
flash.keep # keeps the entire flash flash.keep(:notice) # keeps only the "notice" entry, the rest of the flash is discarded
# File lib/action_dispatch/middleware/flash.rb, line 166 def keep(k = nil) use(k, false) end
# File lib/action_dispatch/middleware/flash.rb, line 111 def key?(name) @flashes.key? name end
# File lib/action_dispatch/middleware/flash.rb, line 107 def keys @flashes.keys end
Convenience accessor for flash
# File lib/action_dispatch/middleware/flash.rb, line 206 def notice self[:notice] end
Convenience accessor for flash=
# File lib/action_dispatch/middleware/flash.rb, line 211 def notice=(message) self[:notice] = message end
Sets a flash that will not be available to the next action, only to the current.
flash.now[:message] = "Hello current action"
This method enables you to use the flash as a central messaging system in your app. When you need to pass an object to the next action, you use the standard flash assign ([]=). When you need to pass an object to the current action, you use now, and your object will vanish when the current action is done.
Entries set via now are accessed the same way as standard entries: flash['my-key'].
# File lib/action_dispatch/middleware/flash.rb, line 154 def now @now ||= FlashNow.new(self) end
# File lib/action_dispatch/middleware/flash.rb, line 217 def now_is_loaded? !!@now end
Used internally by the keep and discard methods
use() # marks the entire flash as used use('msg') # marks the "msg" entry as used use(nil, false) # marks the entire flash as unused (keeps it around for one more action) use('msg', false) # marks the "msg" entry as unused (keeps it around for one more action)
Returns the single value for the key you asked to be marked (un)used or the FlashHash itself if no key is passed.
# File lib/action_dispatch/middleware/flash.rb, line 228 def use(key = nil, used = true) Array(key || keys).each { |k| used ? @used << k : @used.delete(k) } return key ? self[key] : self end
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