def users_list  
  html = ''  
  self.users.each do |user|  
    html << user.link_avatar_tag  

I feel that it is possible to write shorter.

Is it possible get rid of the temporary variable(html)?

  • \$\begingroup\$ What class is user? html_safe is no standard method for String - What gems are you using? Or in short: Can you provide a MWE? And to answer: It looks ok for me. \$\endgroup\$ – knut Jan 7 '13 at 15:08
  • \$\begingroup\$ Main topic of my question: Is it possible get rid of the temporary variable(html)? \$\endgroup\$ – fantgeass Jan 7 '13 at 15:30
  • \$\begingroup\$ I'll tag this rails, that's where html_safe comes from. \$\endgroup\$ – tokland Jan 7 '13 at 16:41
  • \$\begingroup\$ one question about self.users, is this a model? a helper? \$\endgroup\$ – tokland Jan 8 '13 at 8:39
  • \$\begingroup\$ This is TaskDecorator. Task has_and_belongs_to_many :users github.com/drapergem/draper \$\endgroup\$ – fantgeass Jan 8 '13 at 12:54

You should use map (don't use each to accumulate. Check this page about functional programming):

def users_list  
  • 1
    \$\begingroup\$ I change code a bit & that works: self.users.map(&:link_avatar_tag).join.html_safe \$\endgroup\$ – fantgeass Jan 7 '13 at 16:47
  • \$\begingroup\$ mmm, yes, you are right, here safe_join is not necessary, edited. \$\endgroup\$ – tokland Jan 7 '13 at 17:05

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