Populate Select Advanced Field With Data From WP_Query - Meta Box

This topic has 2 replies, 2 voices, and was last updated 1 year, 9 months ago by Piotr.

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March 10, 2023 at 6:20 AM #40933

Piotr
Participant

Hello,

I'd like to populate Select Advanced field with data from WP_Query, but not on page load with the default callback function, but dynamically based on value of another field (Radio Button).

I have already developed AJAX interchange involving jQuery/php so that I am receiving WP_Query data as expected based on Radio Button selected item, then put them into key => value array, but I got stuck on how to actually inject this array into the existing Select Advanced field. Should it be inserted into the [options] key of the field?

Thanks.

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March 10, 2023 at 10:35 PM #40947

Peter
Moderator

Hello,

If you can create an ajax call to get the query data, please append the value to the option list by using jQuery. The [options] field setting is loaded on page load so if you put your code there, it will not work as expected. Please refer to this topic https://stackoverflow.com/questions/17384705/updating-list-of-select-options-using-jquery-and-ajax

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March 11, 2023 at 6:50 PM #40956

Piotr
Participant

Hi Peter,

I missed one crucial part: I forgot that the php hook have to actually ECHO the data that is to be used by JavaScript... Now the link you provided makes sense.

Thank you!

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