Thank you very much Danielo for your help.
You was very clear in your respone.
Have a nice day.
Paulin
Il giorno giovedì 4 agosto 2016 17:52:30 UTC+2, Danielo Rodríguez ha
scritto:
>
> I'm surprised that you got Promises working without any library. You are
> probably using a very modern browser.
>
> Promises aside, you have to provide a callback to your function. Then, on
> the callback you perform the required operations.
>
> /*
> * Run the macro
> */
> exports.run = function(url, callback) {
> var url = url || "None";
>
>
> [ ........ I REMOVED AJAX CODE .........]
>
> ajax('./test-2.php?url='+url).then(function(result) {
> console.log('**** > '+result);
> callback(null,result); // it is a convention tu return the
> error in first place, and then the results. We don't get any error, so put
> null in place
> }).catch(function(error) {
> console.log('Error');
> callback(error)
> });
> };
>
> As you can see, I am not returning anything, I'm just calling the callback
> with the response. Then you should use it like this:
>
> //this function will handle the results
> function my_ResultHandler(err,result){
> if(err){
> return; //finalize execution, we got an error. You are already
> handling this on the promise, so no need for an extra handling here
> }
> //doo whatever you want with your result here, maybe creating a new
> tiddler?
> tw.addTiddler({title:'ajaxResult', text:result})
> }
>
> //here you call your macro, widget or whatever
> url('my/url',my_ResultHandler);
>
>
> Since you are using promises already you can return the promise on your
> url code (like you do on the ajax function) which is more cleaner:
>
> //This time we don't need a callback because we are using promises
> exports.run = function(url) {
> var url = url || "None";
>
> [.... I removed code here because it is the same ....]
>
> return ajax('./test-2.php?url='+url).catch(
> function(err) {
> console.log('Error!', err);
> });
>
> // you can handle errors, but it is not mandatory, you can just return the
> promise, so code above can become
> // return ajax('./test-2.php?url='+url)
>
> }
>
> function my_ResultHandler(result){....} // we don't need the error here,
> because that is handled inside the .catch() statement.
>
> //then calling it
> url('my/url').then(my_ResultHandler);
>
>
> hope this helps
>
>
>
--
You received this message because you are subscribed to the Google Groups
"TiddlyWiki" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at https://groups.google.com/group/tiddlywiki.
To view this discussion on the web visit
https://groups.google.com/d/msgid/tiddlywiki/74f2142b-3210-45d9-816a-ecd06cf3fccf%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
