Default Value - pre propulate - filter ? - Support Fourms

This topic has 6 replies, 2 voices, and was last updated 4 years, 8 months ago by Anh Tran.

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September 19, 2016 at 5:00 PM #4113

Sinusite
Participant

Hi !

I was wondering how i could prefill the custom fields in a new post.
i know i can use the 'std' parameter but i would like to make it conditionnal and dynamic.

For example in a new post, be able to get metadata of another custom post type which the POST_ID would be in a hidden field or a parameter in the URL.

Something like http://www.wpbeginner.com/wp-tutorials/how-to-add-default-content-in-your-wordpress-post-editor/ but for custom fields.

May be with https://metabox.io/docs/filters/#section-rwmb_normalize_field ?

What is the best syntax or way to do this ?

Thank You for your help !
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September 21, 2016 at 9:46 AM #4119
Anh Tran
Keymaster
Hi,

I think normalize filter or field_meta filter both works. However, using normalize filter seems to be better.

But why don't you just use a condition check when defined meta boxes? I think it's faster. Something like this:
```
add_filter( 'rwmb_meta_boxes', function( $meta_boxes ) {
    $field = array(
        'id' => 'test',
        'type' => 'text',
        'std' => 'Default value',
    );
    if ( is_admin() ) {
        $post_id = isset( $_GET['post'] ) ? $_GET['post'] : ( isset( $_POST['post_ID'] ) ? $_POST['post_ID'] : false );
        if ( 1 == $post_id ) {
            $field['std'] = 'Another default value';
        }
    }
    $meta_boxes[] = array(
        // ...
        'fields' => array(
            $field,
            // ...
        ),
    );
    return $meta_boxes;
} );
```
Or you can filter directly to rwmb_meta_boxes to change the std value of a field:
```
add_filter( 'rwmb_meta_boxes', function( $meta_boxes ) {
    if ( is_admin() ) {
        $post_id = isset( $_GET['post'] ) ? $_GET['post'] : ( isset( $_POST['post_ID'] ) ? $_POST['post_ID'] : false );
        if ( 1 == $post_id ) {
            $meta_boxes['fields'][0]['std'] = 'Another default value'; // First field
        }
    }
    return $meta_boxes;
}, 9999 ); // High priority to make sure this function run last
```
September 25, 2016 at 10:34 PM #4140

Sinusite
Participant

Hmmm thank you. My context is a little bit more complex...

I am using add_filter('wp_get_object_terms' but it's not easy to perform query sometimes.

I'll try the second choice you gave me - the problem with this one is you have to care about the fields order.

Thank you!

September 25, 2016 at 11:56 PM #4141

Sinusite
Participant

It would be great to have $meta_boxes['fields']['field_id']['std']

September 27, 2016 at 10:22 PM #4154
Anh Tran
Keymaster
There’s nothing stop you doing that. Simply add keys to fields param, like this:
```
’fields’ => array(
    ‘phone’ => array(
        ‘id’ => ‘phone’,
        ’type’ => ’text’,
        ’name’ => ‘Phone’,
    ),
)
```
September 30, 2016 at 11:37 PM #4200

Sinusite
Participant

Great !
But is it working with Taxonomy fields ?
(Please see this issue)

October 3, 2016 at 8:28 AM #4217

Anh Tran
Keymaster

It should. The taxonomy field needs to work as normal fields. I will check and fix it on Github.
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