Rails - Oct 2005 - Pushing Javascript Helper to external file.

I have a table and when I mouseover a row I want a pop-up with some
additional information for that specific row (called remotely).

I can do this easily with something along the lines of...

onmouseover="<%= remote_function(:updated => "notediv",
:loading => "
Element.show(''note'');", :url => {:action =>
''get_note'', :id =>
inventory.id<http://inventory.id>})
-%>" onmouseout="Element.hide(''note'')".

Okay, the problem with that is, when someone moves the mouse over several
rows and then settles on one row, it loads the data from all those rows,
causing a lagged response. I need to abort the remote call in onmouseover.
This isn''t a huge problem. I have to remove the :loading part from my
helper
function and do it myself, but in the end I can do something like this...

onmouseover="abortCallandShowDiv(); tempvar =
<%remote_function(:update=>''notediv'', :url =>
{:action => ''get_note'', :id =>
inventory.id <http://inventory.id>}) -%>"

And that works, but now I''m serving twice as much data as I need to.
The
purist in me really wants to move all this javascript into a single function
in an external file. onmouseover would just call one function passing the
event and the id as arguments. And I can do this, but I have to hardcode the
call to new Ajax.Updater, so it looks something like this...

tempvar = new Ajax.Updater(''notediv'',
''/store_room/get_note/'' + id,
{asynchronous:true, evalScripts:true});

I just copied the result of remote_function. Anyhow, as you can probably
tell this is going to cause a problem if my app is deployed to a
subdirectory, say /inventory, then the Ajax.Updater should call
''/inventory/store_room/get_note'' + id, but it won''t.
I need that :url magic
in my external .js file.

Is there a solution to this?


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On 11-okt-2005, at 19:24, Rube wrote:
>
> I just copied the result of remote_function.  Anyhow, as you can  
> probably tell this is going to cause a problem if my app is  
> deployed to a subdirectory, say /inventory, then the Ajax.Updater  
> should call ''/inventory/store_room/get_note'' + id, but it
won''t.  I
> need that :url magic in my external .js file.
>
> Is there a solution to this?
class JavascriptController <  ApplicationController
     before_filter :javascript_header
  layout nil
   def index
     render :text=>''alert("Hello from the
controller")''
   end

    def whatever
       @items_belonging_to_user = Item.all_find_by_owner_id(@user.id)
         # will render whatever.rhtml where you can put some javascript
   end

   private

    def javascript_header
     response.env["Content-type"] = "text/javascript"
   end
end




-- 
Julian "Julik" Tarkhanov

On Tuesday 11 October 2005 19:24, Rube wrote:
> I just copied the result of remote_function.  Anyhow, as you can
> probably tell this is going to cause a problem if my app is deployed
> to a subdirectory, say /inventory, then the Ajax.Updater should call
> ''/inventory/store_room/get_note'' + id, but it
won''t.  I need that
> :url magic in my external .js file.
No magic, but two suggestions

1) define a JavaScript variable urlPrefix in your main layout
2) include a config script where you define such a prefix

Michael

-- 
Michael Schuerig               Most people would rather die than think.
mailto:michael-q5aiKMLteq4b1SvskN2V4Q@public.gmane.org                          
In fact, they do.
http://www.schuerig.de/michael/                      --Bertrand Russell