Rails spinoffs - Apr 2006 - RE: Prototype Ajax - How to pass my own params toonComplete ?

You need a closure.

onComplete: function (response) { NamedActionResponseHandler(theElement,
response); }

Is that what you mean?

Greg
> -----Original Message-----
> From:
rails-spinoffs-bounces-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
[mailto:rails-spinoffs-
> bounces-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org] On Behalf Of
Erin Brewer
> Sent: Monday, April 10, 2006 10:18 AM
> To: rails-spinoffs-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> Subject: [Rails-spinoffs] Prototype Ajax - How to pass my own params
> toonComplete ?
> 
> Sorry if this has been covered before, i can''t imagine it
hasn''t, but
> i''ve been unable to find any information on it.
> 
> Can i pass my own parameters to the onComplete function specified by
> Ajax.Request ?
> 
> My basic setup is i have an html element triggering an event (the ajax
> update).
> I have additional information encoded into the element about how it
> should handle different response codes returned from the ajax event.
> The problem is, i havn''t figured out a way to specify the id of my
> element to be passed along to the onComplete function, so right now i
> just stick it in a global js variable before the ajax call and then
look
> it up in my on Complete function, but thats pretty hacky.
> 
> I suppose i can pass the elementId as a param to my ajax call, and
have
> the responder return it as part of the response codes, but that seems
> kinda weak as well.
> 
> Is there no way to keep my current context when the ajax onComplete
> function is triggered?
> 
> Here''s my trimmed down code sample:
> -----------------------------------
> //global reference to the element invoking the action
> var NamedActionElement;
> 
> function NamedActionHandler(theElement)
> {
> 	//set our global reference to the element so we can access it in
> later
> functions
> 	//since ajax calls take us to other functions and we can''t seem
to
> pass
> it along
> 	NamedActionElement = theElement;
> 
> //skip setting up my vars for the ajax call
> 
> 	//make the ajax call
> 	var ajaxCall = new Ajax.Request( urlCall,
> 		{method: ''post'',
> 		postBody: postFormData,
> 		onComplete: NamedActionResponseHandler}
> 	);
> }
> 
> function NamedActionResponseHandler(theResponse)
> {
> 	var elementThatTriggeredEvent = NamedActionElement;
> 
> //do stuff based on values i have encoded into the element and
> //the data returned in theResponse
> }
> 
> ----------------------
> 
> As you can see, i have to have this global variable so my onComplete
> function can know which element triggered the event.
> Is there a way to pass my own argument to the onComplete function?
> 
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> Posted via http://www.ruby-forum.com/.
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Yes, thats exactly what i needed apparently ;-)

I had tried to do it as you speced out below, but i got an undefined 
object js error so i had assumed due to scoping issues i couldn''t quite
do it like this.
The other response to my post from Michael Peters (which had me to a 
closure in the actual function invoked by onComplete) seems to work.

I tried it again your way (because this seems a little more intuitive to 
me) but still recieved a js error so i''m not quite sure ...

Thanks though.

Gregory Hill wrote:
> You need a closure.
> 
> onComplete: function (response) { NamedActionResponseHandler(theElement,
> response); }
> 
> Is that what you mean?
> 
> Greg
> 
>> -----Original Message-----
>> From:
rails-spinoffs-bounces-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> [mailto:rails-spinoffs-
>> Ajax.Request ?
>> 
>> My basic setup is i have an html element triggering an event (the ajax
>> update).
>> I have additional information encoded into the element about how it
>> should handle different response codes returned from the ajax event.
>> The problem is, i havn''t figured out a way to specify the id
of my
>> element to be passed along to the onComplete function, so right now i
>> just stick it in a global js variable before the ajax call and then
> look
>> it up in my on Complete function, but thats pretty hacky.
>> 
>> I suppose i can pass the elementId as a param to my ajax call, and
> have
>> 
>> function NamedActionHandler(theElement)
>> {
>> 	//set our global reference to the element so we can access it in
>> later
>> functions
>> 	//since ajax calls take us to other functions and we can''t
seem
> to

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