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 = [&quot;123456789&quot;, &quot;fDF125847&quot;, &quot;124578&q

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

davidb · Accepted Answer · 2012-12-19 11:35:45Z

5

Instead of

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

you should write

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

answered Dec 19, 2012 at 11:35

davidb

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Comments

Misha Reyzlin · Accepted Answer · 2012-12-19 11:59:32Z

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.

answered Dec 19, 2012 at 11:12

Misha Reyzlin

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one more details I use Hstor on my database :

her is the code : <%= @users.collect{|item| item.details['name'] }

did you try to apply .to_json to it? you show unchanged code from your initial question

Bruno Campos · Accepted Answer · 2012-12-19 11:37:05Z

1

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

answered Dec 19, 2012 at 11:37

Bruno Campos

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