Having problems with the_sub_field();

• luke_r

• August 22, 2013 at 7:04 am

Please see the code below with notes. I am trying to get the sub field to post out as a checkbox through gravity forms. I have a similar function that works but this fails as the_sub_field(“fitters_name”) returns null. Any idea why this could be, var2console is a function I am using to print console.log to find these results.

<?php add_filter('gform_pre_render_1', 'populate_checkbox');
add_filter("gform_pre_submission_filter_1", "populate_checkbox");
function populate_checkbox($form){
	global $values;
	// Stage one
	// Select all the posts available to the user.Assign the posts to an array named $fields_id.
    foreach($form['fields'] as &$field){
        if($field['type'] != 'select' || strpos($field['cssClass'], 'populate-posts') === false)
            continue;
			$posts = get_posts('numberposts=-1&post_status=publish');
			$user_id_a = get_current_user_id();
        foreach($posts as $post){
			$key_1_value = get_post_meta( $post->ID, U_S_C_users, true );
			if ($key_1_value[0] == $user_id_a) {
				$fields_id[] = $post->ID;
			}
        }
    }
	// Stage two
	// For each field id store each fitters name in the posts array in a new array named $values.
	foreach($fields_id as $fields){
		if(get_field('fitters', $fields)):
			while (has_sub_field('fitters', $fields)):
						$values[] = the_sub_field('fitters_name');
						var2console($values);
			endwhile;	
			
		endif;
	}
	// Stage three
	// Select form field id 110 and create checkboxes as documented on the gravity forms site http://www.gravityhelp.com/documentation/page/Gform_pre_render, only using $fitters_name array rather than $post.
    foreach($form['fields'] as &$field){
		$field_id = 110;
        if ($field['id'] != $field_id)
        continue;
		foreach ($values as $value) {
			$choices[] = array('text' => $value, 'value' => $value);
			$inputs[] = array("label" => $value, "id" => "{$field_id}.{$input_id}");
			$input_id++;
		}
        $field['choices'] = $choices;
        $field['inputs'] = $inputs;
    }
    return $form;
}

Thanks.

• luke_r

• August 22, 2013 at 7:37 am

Below is a print out of post meta for first post id looped in “Stage 2” noted above.

ARRAY[26] = array (
  '_edit_last' => 
  array (
    0 => '1',
  ),
  '_edit_lock' => 
  array (
    0 => '1377120757:1',
  ),
  'U_S_C_users' => 
  array (
    0 => 'a:1:{i:0;s:1:"2";}',
  ),
  'U_S_C_message' => 
  array (
    0 => '',
  ),
  'address' => 
  array (
    0 => 'Hotel',
  ),
  '_address' => 
  array (
    0 => 'field_51dd2a41842f7',
  ),
  'city' => 
  array (
    0 => 'Manchester',
  ),
  '_city' => 
  array (
    0 => 'field_51dd2b96938b1',
  ),
  'post_code' => 
  array (
    0 => 'M1 4PS',
  ),
  '_post_code' => 
  array (
    0 => 'field_51dd2ba1938b2',
  ),
  'country' => 
  array (
    0 => 'UK',
  ),
  '_country' => 
  array (
    0 => 'field_51dd2bb6938b3',
  ),
  'fitters_0_fittersname' => 
  array (
    0 => 'Rob',
  ),
  '_fitters_0_fittersname' => 
  array (
    0 => 'field_520e07d86bcd7',
  ),
  'fitters_0_fittersdayrate' => 
  array (
    0 => '90',
  ),
  '_fitters_0_fittersdayrate' => 
  array (
    0 => 'field_520e08306bcd8',
  ),
  'fitters_1_fittersname' => 
  array (
    0 => 'Ben',
  ),
  '_fitters_1_fittersname' => 
  array (
    0 => 'field_520e07d86bcd7',
  ),
  'fitters_1_fittersdayrate' => 
  array (
    0 => '80',
  ),
  '_fitters_1_fittersdayrate' => 
  array (
    0 => 'field_520e08306bcd8',
  ),
  'fitters_2_fittersname' => 
  array (
    0 => 'Phil',
  ),
  '_fitters_2_fittersname' => 
  array (
    0 => 'field_520e07d86bcd7',
  ),
  'fitters_2_fittersdayrate' => 
  array (
    0 => '90',
  ),
  '_fitters_2_fittersdayrate' => 
  array (
    0 => 'field_520e08306bcd8',
  ),
  'fitters' => 
  array (
    0 => '3',
  ),
  '_fitters' => 
  array (
    0 => 'field_520e07c46bcd6',
  ),
);

• luke_r

• August 22, 2013 at 8:14 am

Got it working by not using the_sub_field.. either way I would like to get to the bottom of this for future use. Many thanks.

Working script:

	// Stage two
	// For each field id store each fitters name in the posts array in a new array named $values.
	foreach($fields_id as $fields){
		$rows = get_field('fitters', $fields);
		if($rows):
			foreach($rows as $row) {
						$values[] = $row['fittersname'];
			}
		endif;
	}

• Elliot

• August 22, 2013 at 2:44 pm

Hi @luke_r

Perhaps you needed to use get_sub_field?

• luke_r

• August 23, 2013 at 1:24 pm

I have tried that and a few other things and couldn’t find anything obvious checking through your documentation (which is great btw, thanks for the effort). Been playing about with this for a few days now and think that the problem is with storing the value in a variable which has caused the same issue in a seperate script now.

Other than that small issue with that function though the plugin has been great, saved me a lot of time :).

Many thanks.