Assigning a rails value to a global variable and use it in javascript

Question

I have a javascript function which takes rails value like

<body onload="myFunction(<%p%>)">

and I'm trying to pass a value coming from the controller like this

<% if logged_in? -%><%p= current_user.id %><% end -%> but here the p doesn't contain the value. this works if I put code like this
<body onload="myFunction(<%= current_user.id%>)">
<% if logged_in? -%><%= current_user.id %><% end -%>

But I need a further requirement, so another line like this should be add

<% if logged_out? -%><%p= current_user.id %><% end -%>

So if the user is logged out then the value p will passed to the javascript function. I know this is a small thing but don't know how to do it, I'm new to ror so please help and if you have tutorials to learn this point me too, so that can I save the time of both you and me in the future.

Vadim · Accepted Answer · 2012-06-08 09:31:36Z

1

Hope it will help:

Passing Data to JavaScript

answered Jun 8, 2012 at 9:31

Vadim

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Muhammad Kashif Ali · Accepted Answer · 2012-06-08 06:33:00Z

0

Please use like this when assign any value

      <body onload="myFunction('<%=p%>')">

Hope work it

answered Jun 8, 2012 at 6:33

Muhammad Kashif Ali

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6 Comments

Juliyanage Silva Over a year ago

another thing ,is this right <%p= current_user.id %> kashif?

Juliyanage Silva Over a year ago

but this <body onload="myFunction('<%=p%>')"> is not working..:(

Muhammad Kashif Ali Over a year ago

But i thing better is you first set the id of user into p variable like this p = current_user.id and then pass p variable to function

Juliyanage Silva Over a year ago

Sorry for disturbing you, do you know any ebook or tutorials to learn these things?

Muhammad Kashif Ali Over a year ago

Rails guide is best also micheal hurt tutorial is best.But js you will learn with passage of time.

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