Displaying a widget on a single WordPress post

I’ve used WordPress’ conditional tags in the past, for example to make sure that something only shows on a certain type of page or post but, a few months ago, I wanted to limit some code to only run on a specific post – and that was proving to be a challenge.  Then I found a useful plugin called Widget Logic.  As the name suggests, it adds some logic to widgets such that they only appear according to the rules specified using conditional tags.

All I needed to add was is_single('postnumber') to limit the widget to appearing only on the post I specified.  It’s also been handy to limit my warning that older content may be out of date so that it’s not shown on pages, only on posts (using !is_page()).

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