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Versions: 29
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Stored size: 1.53 KB
Contents
class Card
module Env
# session history helpers: we keep a history stack so that in the case of
# card removal we can crawl back up to the last un-removed location
module LocationHistory
def location_history
session[:history] ||= [Env::Location.card_path("")]
session[:history].shift if session[:history].size > 5
session[:history]
end
def save_location card
return unless save_location?(card)
discard_locations_for card
session[:previous_location] =
Env::Location.card_path card.name.url_key
location_history.push previous_location
end
def save_location? card
!Env.ajax? && Env.html? && card.known? && (card.codename != :signin)
end
def previous_location
return unless location_history
session[:previous_location] ||= location_history.last
end
def discard_locations_for card
# quoting necessary because cards have things like "+*" in the names..
session[:history] = location_history.reject do |loc|
if (url_key = url_key_for_location(loc))
url_key.to_name.key == card.key
end
end.compact
session[:previous_location] = nil
end
def save_interrupted_action uri
session[:interrupted_action] = uri
end
def interrupted_action
session.delete :interrupted_action
end
def url_key_for_location location
(%r{/([^/]*$)} =~ location) ? Regexp.last_match[1] : nil
end
end
end
end
Version data entries
29 entries across 29 versions & 1 rubygems