client error on IE: Assignment to read-only properties is not allowed in strict mode

[SuneBahn]

When running Odoo 9.0 from git:

1. install project
2. open a client connection from IE
3. click on Project>Projects and click on a project

Expected:
The project is shown

Actual:
client error: Assignment to read-only properties is not allowed in strict mode .... at web.assets_common.js

This only happens on IE, not on Chrome.

[sle-odoo]

hi,
which version of IE?

[SuneBahn]

IE 11.
I have tried it both on windows phone (8.1), Windows surface RT, and a laptop running Win8.1, all with the same result.

[rgeleta]

Same problem, also IE 11.
Odoo Client Error
Assignment to read-only properties is not allowed in strict mode
http://192.168.1.72:8069/web/content/360-e45bb5b/web.assets_common.js:2614
Traceback:
TypeError: Assignment to read-only properties is not allowed in strict mode
at _trigger_up (http://192.168.1.72:8069/web/content/360-e45bb5b/web.assets_common.js:2614:901)
at trigger_up (http://192.168.1.72:8069/web/content/360-e45bb5b/web.assets_common.js:2614:796)
at on_card_clicked (http://192.168.1.72:8069/web/content/570-de31092/web.assets_backend.js:6617:321)
at on_card_clicked (http://192.168.1.72:8069/web/content/570-de31092/web.assets_backend.js:4445:434)
at Anonymous function (http://192.168.1.72:8069/web/content/360-e45bb5b/web.assets_common.js:2535:360)
at on_card_clicked (http://192.168.1.72:8069/web/content/570-de31092/web.assets_backend.js:4463:983)
at Anonymous function (http://192.168.1.72:8069/web/content/360-e45bb5b/web.assets_common.js:2535:360)
at on_global_click (http://192.168.1.72:8069/web/content/570-de31092/web.assets_backend.js:6617:13)
at Anonymous function (http://192.168.1.72:8069/web/content/360-e45bb5b/web.assets_common.js:2638:1)
at jQuery.event.dispatch (http://192.168.1.72:8069/web/content/360-e45bb5b/web.assets_common.js:740:372)

Note: On different project, issue
angular/material#3943
was similar, has been resolved
Microsoft has documentation of strict mode at
https://msdn.microsoft.com/en-us/library/br230269(v=vs.94).aspx

[auditum]

Does anybody have a quick fix for this issue? The Odoo 9 Community edition currently cannot be used by IE 11 users! Is this issue fixed in the enterprise version?

[auditum]

Fix:

in File: addons/web/static/src/js/framework/mixins.js
change _trigger_up function (starting at line 279) to

_trigger_up: function(event) {
        this.__edispatcherEvents.trigger(event.name, event);
        var parent = this.getParent();
        if (!event.is_stopped() && (parent)) {
            parent._trigger_up(event);
        }
    }

Diff:

281c281,282
<         if (!event.is_stopped() && (parent = this.getParent())) {
---
>         var parent = this.getParent();
>         if (!event.is_stopped() && (parent)) {

[nle-odoo]

Hello thanks for reporting and investigating, it should be fixed in f5bd1cc which has the same effect than your last diff.

Is this issue fixed in the enterprise version?

It was fixed but was part of a very big commit. Hence, that this small line was also needed in community was overlooked.

[sjatkins]

Is this a general fix or for this specific project. Many people hit this error and mentioning what the general problem is and how to generally handle it would help many. Thanks for considering it.

[nle-odoo]

@sjatkins the fix I spoke above is a fix for this particular issue.

the issue could happen to any project and was that we used a variable without declaring it (by doing var my_variable;) which when the javascript code is set as strict mode caused this error.