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Issue list context menu not working in IE9 (Bug #419)
The best bet would be to update prototype to the latest version (i.e. 1.7) and probably also the scriptaculous files as well. One caveat may be, that Rails might be shipping an adapted version of these versions. Also Rails' JS helpers might rely on API's that were changed with 1.7. This is just guessing, at the moment.
This error was also reported in Redmine - where you may find more information and a possible fix. The fix was released with Redmine 1.1.3.
[#419] Fixing broken multi-select serialization in prototype 1.7
See https://prototype.lighthouseapp.com/projects/8886/tickets/1180 for details.
Contributed by Ben Gunter.
I would like to propose a different approach though. I think updating just one of two tightly coupled libraries (prototype and scriptaculous) seems wrong to me. Also we can assume, that scriptaculous also suffers from bugs with IE9. Rails 2.3 ships with Prototype 184.108.40.206 and script.aculo.us 1.8.2. Although they are rather old - they were added back in November 2009 - updating to their current version (1.7 and 1.9 respectively) will probably work quite well.
We should keep an eye on this particular issue, where mulit-select serialization seems to be broken. There is a patch to fix it, but I do not know, why it was not yet applied to prototype's core.
In general, I think we should care about IE 9 and since 2.0 will be around for some time, I also think, that this should be addressed as soon as possible. Also 2.0 was said to be a dependency update release - updating the JS libraries seems to be a perfect fit.
I would be willing to do the code work and some testing in IE9 and FF 4. I do not know how much testing would be necessary to build enough of confidence.
There would also be an alternative solution which would probably work in the meantime. We could force IE9 to use IE8 compatibility mode by adding a meta tag to the base layout's head.
<meta http-equiv="X-UA-Compatible" content="IE=8"/>
See this Microsoft page for more detailed information.
But I think this approach would be more adequate for a patch level release.
I think I have a rewrite of the context menu using jQuery. I don't know if we could (or should) try to rush that into 2.0 though. Gregor, would you mind trying to test the JS updates and see how much breaks? Worst case we can force IE8 compatibility mode...
(Sidenote: need to look into some JS testing tools)
Since 2.0 will be around for 6 months, I +1 the JS upgrade there. We might have to do some bug fixing in minor releases if things break. The alternative is to do a JS upgrade in a minor release which is riskier (e.g. 2.1.0 -> 2.2.0).
After seeing some other issues that are fixed in IE 9+, I think forcing IE9 back to IE8 might be the wrong direction.
Anyone else want to speak up with their opinions on this?