I just hate things that fail silently, just like User.order_by(:created_at).find_each

Which will simply ignore the order option….

So here comes the alternative…

class ActiveRecord::Base
  # normal find_each does not use given order but uses id asc
  def self.find_each_with_order(options={})
    raise "offset is not yet supported" if options[:offset]

    page = 1
    limit = options[:limit] || 1000

    loop do
      offset = (page-1) * limit
      batch = find(:all, options.merge(:limit => limit, :offset => offset))
      page += 1

      batch.each{|x| yield x }

      break if batch.size < limit
    end
  end
end

(the 😮 is : and o)

Evil users often write something like “SomeThingNewAndGreat,use,it aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa” just to annoy us developers who try to get their content into a 50x100px div (at least I suspect it…).

Usage
(Use it after truncating, since it adds additional characters)

#!invisible char between 6 and 7!
"12345 12345678".split_after(3) == "12345 123456​78"
"12345 12345678".split_after(6, :with=>'<br />') == "12345 123456<br />78"

Code

  # splits to long words after max chars with invisible "zero-length-space"
  # UTF8 char that should display in all browsers
  # http://www.fileformat.info/info/unicode/char/200b/index.htm
  def split_after(max, options={})
    zero_length_space = '​' #aka ​
    options[:with] ||= zero_length_space

    split(/ /).map do |part|
      part = part.mb_chars
      if part.length > max
        part[0...max] + options[:with] + part[max..-1].to_s.split_after(max)
      else
        part
      end
    end * ' '
  end

Make any kind of params to a path

  # :controller=>'xxx' --> /xxx
  # /xxx -> /xxx
  # http://adasd.com/xxx -> /xxx
  def path_for(path)
    if path.is_a? Hash
      url_for(path.merge(:only_path=>true))
    else
      URI.parse(path).path
    end
  end