Feed in dynamic options to CFS's Select field type

ansel-cfs-select-hook.php

<?php
/**
 * Hooking into the CFS Select field and filling it with whatever options we want
 */

/**
 * Unfortunately, there only seems to be a hook for ALL OF THE FIELDS!
 */
add_filter( 'cfs_pre_render_fields', 'iso_override_select' );
function iso_override_select( $input_fields ) {

	/**
	 * We'll be getting all the info for all fields declared
	 *
	 * Let's get through all of them...
	 */
	foreach ( $input_fields as $input_field ) {

		/**
		 * ...until we find the one that we want by "name" AKA the field slug
		 *
		 * In this example, the field's slug was 'select_test'
		 */
		if ( 'select_test' === $input_field->name ) {
			/**
			 * Found it!!
			 *
			 * Let's overwrite the values that show up
			 *
			 */


			/**
			 * THIS IS WHERE YOU'D GET OR FEED IN ALL YOUR SQL RETURNED STUFF
			 * AS A OPTION VALUE => PRETTY DISPLAY PAOR
			 *
			 * As an example, I'm simply declaring an array in here...
			 */

			// get the values you want into this array
			$values = array(
				'something_value'      => 'Something pretty text',
				'something_else_value' => 'Something else pretty text',
				'michal_rocks'         => 'Michal rocks!',
				'ansel_rocks'          => 'Ansel is totes awesome!'
			);

			/**
			 * If ever you want the values entered in the UI side AND the ones we got just above,
			 * simply do an array_merge of $values and $input_field->options['choices']
			 *
			 * Otherwise....  (overwriting)
			 */
			$input_field->options['choices'] = $values;

		}

		// That's it, but if you wanted to affect other fields, this would be the place to do it.
		// try doing a var_dump($input_field) here.
		// It should shed light on how the other field types behave / what info they contain
	}


	return $input_fields;

}