3445 Posts in 1031 Topics by 872 members
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12 November 2011 at 7:48am Last edited: 12 November 2011 7:52am
I understand about result caching in templates, as described in http://doc.silverstripe.org/sapphire/en/reference/advanced-templates and how we cannot rely on things like counters, etc. to guarantee unique values for use in a template. But how do we create unique values in template includes when reusing them, such as HTML Element IDs, which must be unique for scripting to work properly?
Here is my scenario: Let's say I have a template include called "MyWidget.ss". Inside this include file is HTML something like:
<div id="element-id-X"><otherHTML /></div>
var widgetDivId = document.getElementById('element-id-X');
This scenario is becoming more frequent as I start to bring in things like Google Custom Search scripting, Disqus elements, etc. One example (though not the only one) is a GoogleSearchBox.ss that is included in the outer "chrome" of the site (IOW the Page.ss that is in the template root folder.) However, there are other pages in the site that will also use *another* GoogleSearchBox.ss on the main page -- styled larger, but otherwise exactly the same, so it would be wrong from a code reuse POV to have a different SS file for that one.
22 November 2011 at 8:11am Last edited: 22 November 2011 8:13am
Doesn't every widget instance provide an "unique" ID (because of its auto-increment field)?
If so, it would be enough to do it this way
<div id="element-id-$ID"><otherHTML /></div>
var widgetDivId = document.getElementById('element-id-$ID');
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