I am trying to override the error function on zul.Upload. My script is as follows:
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zk.afterLoad("zul", function () {
var _xUpload = {};
zk.override(zul.Upload.prototype, _xUpload, {
error : function(msg, uuid, sid) {
// custom code here
}
});
});
No errors are thrown - but my custom code is never called. I am missing anything obvious here ? I have tried several ways based on documentation, but no luck.
My hope is to handle errors from uploads in a custom way, ie change the message and where they are displayed.
The above javascript is loaded globally.
Thanks for any help.
yes there's a slight oversight ... it's not really obvious but nevertheless important
You can test this yourself in the developer console:
zul.Upload.prototype.error
-> undefined
zul.Upload.error
-> ƒ (msg, uuid, sid) {
var wgt = zk.Widget.$(uuid);
if (wgt) {
jq.alert(msg, {desktop: wgt.desktop, icon: 'ERROR'});
zul.Upload.close(uuid, sid);
}
}
As you can see the error function is not on the prototype but at class level more like a static method.
You can see this in the source code: functions above this line are prototype functions (2nd parameter of zk.$extends), methods below are static defined on the class itself (3rd parameter).
Based on this information the way to override the static error method is this (omitting the prototype):
zk.afterLoad("zul", function () {
var _xUploadStatic = {};
zk.override(zul.Upload, _xUploadStatic, {
error : function(msg, uuid, sid) {
// custom code here
}
});
});
Then the method can be called in place of the original.
Awesome thanks cor3000. Yes I did notice that debugging - I managed to get it working by using: zul.Upload.prototype.$class.error = function(...
JustinFrost ( 2018-06-07 13:20:27 +0800 )editAsked: 2018-06-01 22:50:27 +0800
Seen: 20 times
Last updated: Jun 05 '18