update a acf sub_field with the value from a different sub_field

• RenaR

• May 22, 2016 at 8:23 pm

I have a ACF repeater field ‘add_full_address’ for an address with 4 sub_fields.
The user fills in their address in their profile.
I would like this field to also show on the a different post type ‘general_info’
I’ve created another ACF repeater field ‘c_address’ with 4 sub_fields connected to the 2nd post type ‘general_info’.
I need write some code so the sub_fields of ‘c_address’ are updated with the data from the ‘add_full_address’ fields.
I’ve tried

function my_load_field($field) {
$post_id = get_the_id();
$post_author_id = get_post_field( ‘post_author’, $post_id );
$field[‘readonly’] = 1;
if( have_rows(‘add_full_address’, ‘user_’ . get_post_field( ‘post_author’, $post_id )) ):
while( have_rows(‘add_full_address’, ‘user_’ . get_post_field( ‘post_author’, $post_id )) ) : the_row();
$value = get_sub_field(‘c_address_1’);
$field[‘value’] = $value;
endwhile;
endif;
return $field;
}
add_filter(“acf/load_field/key=field_573d88ef3f3bb”, “my_load_field”);
but it isn’t working for a repeater field. (only plain text)

I also tried to use update_sub_field() with a test value ’23’ I put it in the function my_load_field2($field) but it also doesn’t work.
How should I do this?
Thanks

function my_load_field2($field){
$post_id = get_the_id();
$post_author_id = get_post_field( ‘post_author’, $post_id );
$field[‘readonly’] = 1;
$field_key = “field_573d88ef3f3bb”; //key of the sub_field
$user_id = ‘user_’ . get_post_field( ‘post_author’, $post_id);
$value = get_field($field_key, $user_id);
$value[] = “23”;
$field = update_field( $field_key, $value, $user_id );
return $field;
}
add_filter(“acf/load_field/key=field_573d88ef3f3bb”, “my_load_field2”);

• James

• May 23, 2016 at 12:34 pm

Hi @renar

You need to do it by using the acf/save_post hook instead. That way, the data will be updated when your users are saving the address.

Also please use the update_field() function with the field key of the repeater field instead of the subfield. This page should give you more idea about it: https://www.advancedcustomfields.com/resources/update_field/.

I hope this helps. If you have any other questions, feel free to ask me again 🙂

• RenaR

• May 23, 2016 at 8:01 pm

I tried:

function my_acf_post_fieldb($post){
$post_id = get_the_id();
$post_author_id = get_post_field( ‘post_author’, $post_id );
$field[‘readonly’] = 1;
$field_key = “field_573d8df4646da”;// field_key of repeater field
$value = array(
array(
“c_address1” => “Foo”,
“c_address2” => “Bar”
)
);
$field = update_field($field_key, $value);
return $field;
}
add_filter(‘acf/save_post hook’, ‘my_acf_post_fieldb’);

and it isn’t working either. The fields are not being populated with values.
What do I need to return out of the function? I tried return $post; it doesn’t work either.

• James

• May 24, 2016 at 2:59 pm

Hi @renar

I’m afraid you have several mistakes there. The hook should be “acf/save_post”, not “acf/save_post hook”. Here’s an example how I do it:

function my_acf_post_fieldb($post_id){

    // Field key where you want to update (c_address)
    $field_key = 'field_573d8df4646da';

    // The General Info post ID that you want to update
    $general_info_post_id = 99;
    
    // Get the saved value from the user profile
    $value = get_field('add_full_address', $post_id);
    
    // Check if the value exists or not
    if( $value ) {
        // Update the repeater field in the selected post
        update_field($field_key, $value, $general_info_post_id);
    }
}
add_filter('acf/save_post', 'my_acf_post_fieldb', 20);

I’m not sure how did you set the custom field to the General Info post type, so I just assume that you want to update the value on a selected post.

I hope this makes sense 🙂

• RenaR

• May 24, 2016 at 6:43 pm

Your code works, but only for a text field, not for a repeater field.
I got it working for a repeater field using the code below:
`function my_acf_post_fields($post_id){
$post_id = get_the_id();
$post_author_id = get_post_field( ‘post_author’, $post_id );
if( have_rows(‘add_full_address’, ‘user_’ . get_post_field( ‘post_author’, $post_id )) ):
$i = 0;
while( have_rows(‘add_full_address’, ‘user_’ . get_post_field( ‘post_author’, $post_id )) ) : the_row();
$i++;
$value{$i} = get_sub_field(‘add_address_1’);
$value2{$i} = get_sub_field(‘add_address_2’);
$value3{$i} = get_sub_field(‘add_city’);
$value4{$i} = get_sub_field(‘add_zip_code’);

if( have_rows(‘c_address_of_your_clinics’) ) {
$i = 0;
while( have_rows(‘c_address_of_your_clinics’) ) {
the_row();
$i++; update_sub_field(‘c_address1’, $value{$i});
update_sub_field(‘c_address2’, $value2{$i});
update_sub_field(‘c_city’, $value3{$i});
update_sub_field(‘c_zipcode’, $value4{$i});
}
}
endwhile;
endif;
}
add_filter(‘acf/save_post’, ‘my_acf_post_fields’, 20);

However, it is not lopping through all the rows, it stops at the first row.
How do I make it look through and display all the row values.
Do I need to change the order of the if() and while() loops?

• James

• May 25, 2016 at 2:05 pm

Hi @renar

The loop stopped because you executed the the_row() function in the existing loop. Also, please don’t use get_the_id() in functions.php as it can get any ID depends on how it’s executed.

If my code works for a text field, it should be working for a repeater field too. Could you please share the JSON or XML export of your field groups so I can test it out on my end?

Thanks 🙂

• RenaR

• May 25, 2016 at 4:40 pm

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