58 lines
1.9 KiB
Ruby
58 lines
1.9 KiB
Ruby
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module SystemLogHelper
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class SystemLog
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class << self
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# 分页（支持多关键字查询）
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def logo_data(page,per,search)
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logs = find_all_logs
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# 根据search参数来决定是否需要查询
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keywords = search
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if keywords && !keywords.strip.blank?
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# 把keywords转化成正则表达式数组
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keywords = keywords.strip.split(/\s+/).collect! {|w| Regexp.new(w, 'i')}
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# 一条记录应该匹配每个关键字
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logs = logs.find_all do |log|
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keywords.all? { |r| log =~ r }
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end
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logs = Kaminari.paginate_array(logs).page(page).per(per).collect! {|log| parse(log)}
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logs.collect! do |log|
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keywords.each { |r| log.gsub!(r, '<span class="search_results">\0</span>')}
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log
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end
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else
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logs = Kaminari.paginate_array(logs).page(page).per(per).collect! {|log| parse(log)}
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end
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logs
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end
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#清除日誌
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def clear
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File.open(logfile_path, 'w') do |f|
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f.print ''
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end
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end
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#讀取日誌
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private
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def find_all_logs
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File.open(logfile_path) do |f|
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#打开文件，并按照正则表达式切分，逆序，最新一个记录可以扔掉（因为最新的记录永远都是访问System_log)
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f.read.split("Processing").reverse[1..-1]
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end
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end
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# 日志文件的路径，一般在Rails.root/log下，根据环境配置
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# 依次记录到product.log development.log test.log中
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def logfile_path
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File.join(Rails.root, "log", "#{Rails.env}.log")
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end
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#替換換行符
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def parse(log)
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ERB::Util.html_escape(log.gsub(/\e\[[\d;m]+/, '')).gsub("\n", "<br/>")
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end
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end
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end
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end
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