This code generates ‘default’ fields (ones that appear on every post regardless of how many ‘sibling’ posts there are). The resulting fields in this code will return in a get_fields() dump:
function Add_ACF_Location_Fields() {
acf_add_local_field_group(
array(
'key' => 'group_1234',
'title' => 'Location Settings',
'fields' => array(
array (
'key' => 'field_1',
'label' => 'Room',
'name' => 'location_compartment_value',
'type' => 'text',
),
),
'location' => array (
array (
array (
'param' => 'post_type',
'operator' => '==',
'value' => 'locations',
),
),
),
)
);
}
And then this code generates ‘sibling’ fields – one set of fields for each ‘sibling’ post. The resulting fields in this code do not return in a get_fields() dump but do save properly when a post is updated:
function Location_Specific_Fields() {
/**
* Return if trash
*/
if( isset( $_GET['post_status'] ) ){
if( $_GET['post_status'] === 'trash' ) {
return;
}
}
/**
* Get the ID of the post being editted
*/
global $post;
if( isset( $post->ID ) ) {
$edit_ID = $post->ID;
} elseif( isset( $_GET['post'] ) ) {
$edit_ID = $_GET['post'];
} elseif ( isset( $_POST['post_ID'] ) ) {
$edit_ID = $_POST['post_ID'];
} else {
return;
}
// Blank array to hold location field arrays
$fields = [];
// Get all Locations
$args = array(
'post_type' => 'locations',
'posts_per_page' => '800',
'order' => 'menu_order',
'order' => 'ASC'
);
$locs = new WP_Query($args);
// Create fields for each location
if( $locs->have_posts() ) :
while( $locs->have_posts() ) : $locs->the_post();
$cur_id = strval( get_the_id() );
// Do not add fields for current post
if( $cur_id === $post_id ) {
continue;
}
// Unique ID using ids of current post and target post
$field_end_string = $post_id . $cur_id;
// Showing just a text field here for sample purposes, but there
// are other fields that use the same logic.
// *KEYS ARE UNIQUE from field to field but do not change*
$fields[] = array (
'key' => 'field_foo_' . $field_end_string,
'label' => 'Foo',
'name' => 'foo_' . $field_end_string,
'type' => 'text',
'parent' => 'group_1234',
);
// Example Repeater Field
$fields[] = array (
'key' => 'field_bar_' . $field_end_string,
'label' => 'Bar',
'name' => 'bar_' . $field_end_string,
'type' => 'repeater',
'parent' => 'group_1234',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'collapsed' => '',
'min' => 0,
'max' => '',
'layout' => 'row',
'button_label' => 'Add Step'
);
// Example Repeater Sub Field
// Directions SubField: Step
$fields[] = array (
'key' => 'field_bar_step_' . $field_end_string,
'label' => 'Step',
'name' => 'step',
'type' => 'text',
'parent' => 'field_bar_' . $field_end_string,
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'default_value' => '',
'placeholder' => '',
'prepend' => '',
'append' => '',
'maxlength' => '',
'readonly' => 0,
'disabled' => 0,
);
endwhile;
endif;
// Iterate through $fields array, add each child array as local field.
foreach ($fields as $field) {
acf_add_local_field($field);
}
}
Both functions are called via add_action( 'acf/init', funcName ).
If anything needs clarity, please let me know!
