trustieforge/app/caches/homework_common_cache.rb

35 lines
897 B
Ruby

class HomeworkCommonCache
class<<self
#-----------------------------作业
def homework_common_cache(id)
key = "homework_common:"+id.to_s
data = Rails.cache.read(key) rescue nil
if data.nil?
#直接存数据库对象
data = HomeworkCommon.find(id) rescue nil
if data
Rails.cache.write(key,data,{ expires_in: 90.minutes }) rescue Rails.cache.delete(key)
end
end
data
end
#更新
def update_homework_common_cache(id,homework_common)
key = "homework_common:"+id.to_s
data = Rails.cache.read(key)
if data.nil?
else
Rails.cache.write(key,homework_common,{ expires_in: 90.minutes }) rescue Rails.cache.delete(key)
end
end
#删除
def delete_homework_common_cache(id)
key = "homework_common:"+id.to_s
Rails.cache.delete(key)
end
end
end