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Bug 229979 - Properties declared using self not found
Summary: Properties declared using self not found
Alias: None
Product: javascript
Classification: Unclassified
Component: Editor (show other bugs)
Version: 7.4
Hardware: PC All
: P4 normal (vote)
Assignee: Petr Pisl
Depends on:
Reported: 2013-05-20 08:46 UTC by Vladimir Riha
Modified: 2015-03-18 16:18 UTC (History)
3 users (show)

See Also:
Issue Type: DEFECT
Exception Reporter:


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Description Vladimir Riha 2013-05-20 08:46:58 UTC
To reproduce, please try to create KnockoutJS sample project (KnockoutJS must-play game list) and open the html page

=> Navigator does not contain gamesToPlay, gamesCount etc. and also code completion in 

 <strong data-bind="text: |"></strong>

does not offer these properties. It is because they are declared using self pattern

self = this;
self.gamesToPlay = ko.observableArray(games);

Product Version: NetBeans IDE Dev (Build web-main-10560-on-20130519)
Java: 1.7.0_21; Java HotSpot(TM) Client VM 23.21-b01
Runtime: Java(TM) SE Runtime Environment 1.7.0_21-b11
System: Linux version 3.2.0-43-generic-pae running on i386; UTF-8; en_US (nb)
Comment 1 Marek Fukala 2013-05-20 13:39:31 UTC
Petr Pisl already implemented #229717 - The common constructor pattern with "self" is not supported. So possibly sg. needs to be also done at the KO side or there's a bug in the ppisl's change.
Comment 2 Petr Hejl 2013-05-21 07:12:58 UTC
Yep pretty strange. I guess some more tweaking has to be done for self pattern in the model. I'll try to (at least) evaluate it.
Comment 3 Petr Hejl 2013-05-21 08:01:28 UTC
It looks like the self variable in your sample is global and that's why the self-pattern detection does not work imo. Is the use of global variable intentional?
Comment 4 Vladimir Riha 2013-05-21 08:04:31 UTC
I think that is just unfortunate choice of sample's author
Comment 5 Petr Hejl 2013-05-21 08:08:32 UTC
Petre, can you tweak the self pattern solution?
Comment 6 Roman Svitanic 2015-03-02 15:17:35 UTC
Issue is not reproducible using current dev build (and using KO sample project):
Product Version: NetBeans IDE Dev (Build 20150302-84205dde7ed0)
Java: 1.7.0_75; Java HotSpot(TM) 64-Bit Server VM 24.75-b04
Runtime: Java(TM) SE Runtime Environment 1.7.0_75-b13
System: Mac OS X version 10.10.2 running on x86_64; UTF-8; en_US (nb)
Comment 7 Vladimir Riha 2015-03-02 15:25:01 UTC
This is still reproducible (albeit it is a bad pattern), you need to make self on line 10 global again:

self = this

The sample project author fixed it after I asked him to do so [1] so it would work in NetBeans :)

Comment 8 Roman Svitanic 2015-03-18 16:18:20 UTC
(In reply to Vladimir Riha from comment #7)
> This is still reproducible (albeit it is a bad pattern), you need to make
> self on line 10 global again:
> self = this

Thanks for the clarification,. This can be reproduced in Plain JS as well:

MyModel = function() {
    self = this;
    self.demoProperty = 'demo';
var m = new MyModel();

demoProperty is not offered by CC.
I am lowering to P4, since it is really bad practice.