Passing variables between rails and javascript

Rails
1

Hi,

I’ve been looking around on the forums and tutorials but I still can’t
seem to make this work.

Here is what I am trying to do.
I have a view do a form_remote_tag with some variables. In the
controller I want to create an array, fill it with values, and when the
function returns I want to call a javascript function with this array.

currently this is what I have that doesn’t work
******** view *******

<% form_remote_tag :complete => "javascript_functionA(’#{myArray}’),
:url => {:action => :controller_functionA} %>

******** controller *******
class MyController < ApplicationController
def controller_functionA
myArray = [“so”, “many”, “exciting”, “things”]
end
end

I know I must be doing something wrong but being new to rails there just
seems like to many places where I could be messing things up.

Thanks for the help,
Lee

2

Lee Thompson wrote:

******** controller *******
class MyController < ApplicationController
def controller_functionA
myArray = [“so”, “many”, “exciting”, “things”]
end
end

I don’t know what parameters are valid for javascript_functionA(), but
it
may be expecting (‘value1’, ‘value2’, … ). Looks like ‘#{myArray}’ is
giving
just one parameter (‘value1’).

You may have to reference each array value by its indices.

Long

3

Long wrote:

Lee Thompson wrote:

******** controller *******
class MyController < ApplicationController
def controller_functionA
myArray = [“so”, “many”, “exciting”, “things”]
end
end

I don’t know what parameters are valid for javascript_functionA(), but
it
may be expecting (‘value1’, ‘value2’, … ). Looks like ‘#{myArray}’ is
giving
just one parameter (‘value1’).

You may have to reference each array value by its indices.

Long

Thanks for the response Long,

You might be right about that… but for now I actually get this error
undefined local variable or method `myArray’ for
#<#Class:0x409c9ec4:0x409c9e9c>

The array never makes it to the javascript_functionA

the MyController creates myArray, but the view has no idea about it.

4

Lee Thompson wrote:

Thanks for the response Long,

You might be right about that… but for now I actually get this error
undefined local variable or method `myArray’ for
#<#Class:0x409c9ec4:0x409c9e9c>

The array never makes it to the javascript_functionA

the MyController creates myArray, but the view has no idea about it.

Right, try make myArray an instance variable (@myArray) instead of a
local variable.
Then reference @myArray in your view instead of myArray.

Long