counter_cache :name => :user, :inverse_of => :topics
受保护属性,不能接受页面参数
attr_protected :user_id
scope :last_actived, desc("replied_at").desc("created_at")
controller:
caches_page :feed, :node_feed, :expires_in => 1.hours
国际化:
初始化:
I18n.default_locale = :en
LANGUAGES = [
['English', 'en'],
["Español".html_safe, 'es']
]
气质过滤器:
def set_i18n_locale_from_params
if params[:locale]
if I18n.available_locales.include?(params[:locale].to_sym)
I18n.locale = params[:locale]
else
flash.now[:notice] =
"#{params[:locale]} translation not available"
logger.error flash.now[:notice]
end
end
自增:(计数器)
@topic.hits.incr(1)
counter :hits, :default => 0
防止crsf攻击:
protect_from_forgery ----controller
<%= csrf_meta_tag %> --layout
发起其他方式提交:标签用
auto_discovery_link_tag(type = :rss, url_options = {}, tag_options = {})
分词插件:RMMSeg::Algorithm
input=text 默认显示字体 设置 :placeholder =>"xianshi"