Rails 3 + Select2 multiple ids + AJAX -

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I use selection 2 to create an AJMX call to select users for simple messaging inside my app I am here. Everything seems to be getting the most out of work (even intense seals through ANACage), except that I am tearing off my hair to try to make my hair as an easy thing: everyone's To create a message again, run through several user ids. > The problem, apparently, is that Selection 2 returns several IDs in the form of a string that expects the rail. I have tried that a bunch of things do not seem to work ....

How do I change the string? 

  {"username" = & gt; "78,21,12"}   
 to  
  {"username" = & gt; [78221]}    
 
 
 Here's a solution:  
  h = {"username" = & gt; "78,21,12"} h.map {| A, b {One = & gt; B.split (',')}} Decrease (: merge)   
 Product:  
  {"user name" => ["78" , "21", "12"]}   
 or if you want an integer instead of a string:  
  h.map {| A, b {One = & gt; B.split (','). Map (& amp;: to_i)}} Reduce (Merge)   
 Product:  
  {"user name" = & gt; [78, 21, 12]}

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