Rails - Jan 2006 - Passing ruby variable via remote_function (JavaScript)

Hi,

Brand new to this so please excuse anything obvious that I don''t yet 
get.

Here''s what I''m trying to do (This is all in a .rhtml file):

As a simple test I create a local variable called
''localVariable'' and
give it the string "Hello" like this;

<% $localVariable = ''Hello'' %>

Next I want to call a function (nameOfAction) which is expecting to 
receive as input a variable (InputVariable). Now, this all works if I 
hard code in a string in place of $localVariable, but I don''t want to
do
that. The variable is being sent as the name of the variable and not its 
contents. Do I need to escape something???

<% remote_function(:update => :name_of_div,
	:url => { :controller => ''nameOfController'',
	:action => :nameOfAction },
	:with => "''InputVariable='' + $localVariable")
%>

My question is, how do I get the $localVariable to convert to its 
content within the above?

Thanks for any help.

-- 
Posted via http://www.ruby-forum.com/.

Try this


<% remote_function(:update => :name_of_div,
       :url => { :controller => ''nameOfController'',
       :action => :nameOfAction },
       :with => "''InputVariable='' +
#{$localVariable}") %>

On 1/22/06, Rich Johns <richard_louis_johns@hotmail.com>
wrote:
>
> Hi,
>
> Brand new to this so please excuse anything obvious that I don''t
yet
> get.
>
> Here''s what I''m trying to do (This is all in a .rhtml
file):
>
> As a simple test I create a local variable called
''localVariable'' and
> give it the string "Hello" like this;
>
> <% $localVariable = ''Hello'' %>
>
> Next I want to call a function (nameOfAction) which is expecting to
> receive as input a variable (InputVariable). Now, this all works if I
> hard code in a string in place of $localVariable, but I don''t want
to do
> that. The variable is being sent as the name of the variable and not its
> contents. Do I need to escape something???
>
> <% remote_function(:update => :name_of_div,
>         :url => { :controller =>
''nameOfController'',
>         :action => :nameOfAction },
>         :with => "''InputVariable='' +
$localVariable") %>
>
> My question is, how do I get the $localVariable to convert to its
> content within the above?
>
> Thanks for any help.
>
--
anatol (http://pomozov.info)
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Thank you Anatol for your suggestion, but in this case it still did not 
work.

After getting some sleep I have managed to fix my problem, I did it like 
this;


<% remote_function(:update => :name_of_div,
       :url => { :controller => ''nameOfController'',
       :action => :nameOfAction },
       :with => "''InputVariable=" + $localVariable +
"''") %>

It''s all about the arrangement of double and single quotes.

A couple of comments,

a) I am aware that adding $ in front of a variable name makes it global 
and not local as stated.

b) If any beginners (like me) are wondering how I got the 
remote_function to work within a .rhtml file, the solution is to wrap it 
in a javascript tag;

<%= javascript_tag(remote_function(:upda...and so on)) %>

-- 
Posted via http://www.ruby-forum.com/.

Rich Johns wrote:
> 
> <% remote_function(:update => :name_of_div,
>        :url => { :controller => ''nameOfController'',
>        :action => :nameOfAction },
>        :with => "''InputVariable=" + $localVariable +
"''") %>
This should also work...

:with => "\''InputVariable = #{$localVariable}\''"

or

:with => %Q{ \''InputVariable = #{$localVariable}\'' }

_Kevin

-- 
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