Get Sub Field From ACF’s Flexible Content Field #wordpress #ACF

flex-field-by-page-id.php

<?php

/*
* Get a sub field from within a layout of a flexible content field on a specific page
* @param string $flexFieldName The flexible content field name
* @param string $flexFieldLayoutName The flexible content's layout name 
* @param string $flexFieldLayoutField The FCs layout's sub field name
* @return string If exists, then returns the value of the layout's sub field. If not, then it returns a message.
*/

function getFlexFieldByPageID($flexFieldName, $flexFieldLayoutName, $flexFieldLayoutField, $pageID=null){
     $pageID = $pageID? $pageID : get_the_ID();
     // check if the flexible content field has rows of data on the provided page
     if(have_rows($flexFieldName, $pageID)){
          // loop through the rows of data of the flexible content field
          while(have_rows($flexFieldName,$pageID)){ the_row();
               if(get_row_layout() == $flexFieldLayoutName){
                    return get_sub_field($flexFieldLayoutField);
               }else{
                    return "No layout";
               }//end if 
          }//end while
     }else{
          return "No data";
     }//end if
}

/*
*
* Usage Example:
* Get the address and city values from a “contact_info” layout that is located on the contact page.
*
*/

$contactPageID = 123;
$address = getFlexFieldByPageID('modules', 'contact_info', 'contact_info_address', $contactPageID);
$city = getFlexFieldByPageID('modules', 'contact_info', 'contact_info_city', $contactPageID);


/*
* Source: http://rarespud.com/get-sub-field-acfs-flexible-content-field/
*/

?>