This is probably a stupid bug, but here goes.
I need to reject a jQuery Promise inside the success function of a $.ajax() call. The returned value "success" is a boolean value.
function doSomething() {
var myPromise = $.ajax({
method: "POST",
url: "/url/to/use",
data: {"value":$("#value").val()},
success: function(data) {
if (data.success == false) {
ConfirmMessage.showErrorMessage(data.messages[0]);
return new $.Deferred().reject().promise();
} else {
// do other stuff
}
}
});
return myPromise;
}
The doSomething() is used later on in a then() chain:
doSomething().then(doSomethingElse).then(soOn).then(soForth);
So I need to be able to reject the promise and break the chain.
Help appreciated.
This is probably a stupid bug, but here goes.
I need to reject a jQuery Promise inside the success function of a $.ajax() call. The returned value "success" is a boolean value.
function doSomething() {
var myPromise = $.ajax({
method: "POST",
url: "/url/to/use",
data: {"value":$("#value").val()},
success: function(data) {
if (data.success == false) {
ConfirmMessage.showErrorMessage(data.messages[0]);
return new $.Deferred().reject().promise();
} else {
// do other stuff
}
}
});
return myPromise;
}
The doSomething() is used later on in a then() chain:
doSomething().then(doSomethingElse).then(soOn).then(soForth);
So I need to be able to reject the promise and break the chain.
Help appreciated.
Share Improve this question asked Apr 27, 2016 at 12:11 JasonJason 4,14516 gold badges72 silver badges113 bronze badges 1- 1 You can't reject an ajax promise after it's been resolved. Perhaps you can return another promise object which is either marked as resolved or rejected within the ajax callback rather than returning the ajax promise itself. – apokryfos Commented Apr 27, 2016 at 12:19
1 Answer
Reset to default 6You cannot do that from a success callback. There's no reason to use one anyway. Just use then:
function doSomething() {
return $.ajax({
method: "POST",
url: "/url/to/use",
data: {"value":$("#value").val()},
}).then(function(data) {
if (data.success == false) {
ConfirmMessage.showErrorMessage(data.messages[0]);
return new $.Deferred().reject().promise();
} else {
// do other stuff
}
});
}