Array between Rails and JavaScript

Question

I'm working on a ROR application and i need to get an array from my database and use it on JS , so i did this

var tab = <%= @users.collect{|item| item.names }%>;

But when i try to use may Tab i get this error :

SyntaxError: syntax error 
var tab = ["123456789", "fDF125847", "124578&q

i think that I need to cast the & quot; to " but i dont know how ??

Answer 1

Instead of

var tab = <%= @users.collect{|item| item.names }%>;

you should write

var tab = <%= @users.collect{|item| item.names }.to_json.html_safe %>;

Answer 2

You should use JSON for this. Something among the lines

var tab = <%= @users.collect{|item| item.names }.to_json %>;

Or in case your collection doesn't have to_json method, you could use ActiveSupport::JSON and its encode method.

UPD. Also I'd recommend to read How to Securely Bootstrap JSON in a Rails View

• haffane hatim: one more details I use Hstor on my database :
• haffane hatim: her is the code : <%= @users.collect{|item| item.details['name'] }
• Misha Reyzlin: did you try to apply .to_json to it? you show unchanged code from your initial question

Answer 3

var tab = <%= @users.collect{|item| item.names }.to_s.html_safe %>;