On Nov 17, 12:13 pm, badgerduke <[EMAIL PROTECTED]> wrote:
> Hello:
>
> I've been trying to use Ajax.Request(). The following is my code:
>
> function retrieveProjectPermissions(stateDataID, projectID) {
>
> new Ajax.Request('/gallupFaith/me25/
> ProjectPermissionsAjaxAction.action',
> {
> method:'get',
> parameters: {statedataid: stateDataID, projectid: projectID},
> onSuccess: function(transport){
> var responsePP = transport.responseText;
> alert("Success! \n\n" + responsePP);
> if (agentPP.indexOf('msie') != -1) {
Is this based on UA sniffing? If yes, then it's not a good idea. How
do `msPopulatePP` and its counterpart differ?
> var permissionArray = msPopulatePP(responsePP);
> return permissionsArray;
> }
> else if (agentPP.indexOf('mozilla') != -1) {
Same here : )
> var permissionArray = nonMSPopulatePP(responsePP);
> return permissionsArray;
> }
> },
> onFailure: function(){ alert('Something went wrong...') }
> });
>
> }
>
> I am trying to return the variable permissionsArray to the caller of
> retrieveProjectPermissions(). I can't use global variables because
> there is some timing issue . . . the variables always end up undefined
> after I set them. How can I return permissionsArray?
Ajax.Request is asynchronous. `onSuccess` is called much later after
`retrieveProjectPermissions` exits (when client receives response from
the server and that response is "successful"). Use `onSuccess` to
retrieve and then start using that variable; E.g. you can pass some
kind of callback to enclosing function and invoke that callback
function passing it variable in question:
function retrieveProjectPermissions(stateDataID, projectID, callback)
{
// ...
// initialize Ajax.Request
// ...
onSuccess: function(response) {
// get permissionArray
callback(permissionArray);
}
};
and then call it like so:
retrieveProjectPermissions(1, 23, function(arr) {
// do something with `arr`
});
>
> Thanks
> Eric-
--
kangax
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