So I realize that the new CF11 mobile features have been received with some very mixed reviews, but I wanted to try them out to see if I could use them for some really simple device detection, however I cannot get anything to actually work.
For example, I am looking at the doc for cfclientsettings, specifically at the first example on the page under the "Device detection" heading. Here's the code for reference (I formatted it a little to ensure it's easy to read here):
<cfClientSettings detectDevice=true />
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Creating a new .cfm page and adding this code produces the text and button on the page, but clicking the button throws a JS error in Chrome: "Uncaught The function signature is invokeCFClientFunction(functionName [, arg1, arg2, arg3, ...], successCallback, failureCallback). The functionName, successCallback and failureCallback are mandatory. If you don't have a successCallback or failureCallback, null can be passed as the value."
Ok, not great. So I checked some more docs and decided to add another null argument to the invokeCFClientFunction() call to fix the missing callback. This at least corrects the JS error, but now nothing at all happens when clicking the button.
So after some more fussing, I arrived at the following code, which still does not work, but seems closer:
<cfClientSettings detectDevice=true />
<cfscript>
</cfscript>
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So this code, when you click the button, sets the innerHTML of the canvas element to "undefined". Awesome.
Honestly, I've been trying every example I can find for using cfclient and NONE of them work. Is there some secret I'm missing? I have a sneaking suspicion that if I'm not creating a 'Mobile Project' in CFBuilder that this stuff doesn't work? If so that's stupid and they don't state that in the docs really.
What I'm trying to do, in the end, is simply use cfclient for some basic device detection and to grab the width of the browser/device to do some basic media query style detection very much like in the "Using media queries" section of thecfclientsettings doc. I just want to grab the width and then set a session variable based on it.
I am running a fully patched developer version of CF11 on my Win7 machine setup with IIS. Any and all support is welcome.
Message was edited by: Andrew Regis Fixed a few spelling/grammer errors!