去掉无用的代码

config/initializers/string_ext.rb

@@ -1,42 +0,0 @@
-require 'rexml/parsers/pullparser'
-
-class String
-  def truncate_html(len = 30, at_end = nil)
-    p = REXML::Parsers::PullParser.new(self)
-    tags = []
-    new_len = len
-    results = ''
-    while p.has_next? && new_len > 0
-      p_e = p.pull
-      case p_e.event_type
-      when :start_element
-        tags.push p_e[0]
-        results << "<#{tags.last}#{attrs_to_s(p_e[1])}>"
-      when :end_element
-        results << "</#{tags.pop}>"
-      when :text
-        results << p_e[0][0..new_len]
-        new_len -= p_e[0].length
-      else
-        results << "<!-- #{p_e.inspect} -->"
-      end
-    end
-    if at_end
-      results << "..."
-    end
-    tags.reverse.each do |tag|
-      results << "</#{tag}>"
-    end
-    results
-  end
-
-  private
-
-  def attrs_to_s(attrs)
-    if attrs.empty?
-      ''
-    else
-      ' ' + attrs.to_a.map { |attr| %{#{attr[0]}="#{attr[1]}"} }.join(' ')
-    end
-  end
-end