I am creating an in-house plugin that will offer a filtering mechanism using AJAX for any post type depending on the configuration, which I have stored in a JSON.
When the plugin is loaded, I need to set the callback for the AJAX call, and I set that right away (I’m sticking to OOP):
That sets the callback and it works fine…but that instance of $gbf is lost when the page that displays the posts loads and I need to set more properties when the template is loaded.
For instance, when the page that displays the posts loads, I create a new FilterBuilder object and pass it the query args which are then stored on the instance as a property of the class.
When the callback is invoked, it’s dealing with its own instance of a FilterBuilder, so anything I defined in the template does not exist in this class instance.
This puts me in a bit of a pickle because I would like to have access to the query args that were defined when that particular instance was created.
I have resorted for the time being to use transients so I can have a common place to access the query args that the template instance defined from the callback function, but this just feels wrong. Furthermore, I believe transients have a max length and therefore this might explode if that limit is reached.
What other options are there? Maybe serializing the template class instance into a JSON and load it from the callback? That also sounds … a bit meh.
I do not want to use global variables…interested in what you think would be an elegant approach to circumvent this issue.
Thanks for taking the time to read this! 👍🏽
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