bassius

I managed to get it to work with the following code:

add_action( 'rest_api_init', function () {
    register_rest_field( 'lv_listing', 'meta', array(
        'get_callback' => function( $data ) {
            $listing_obj = get_post_meta( $data['id'], '', false );
            return $listing_obj;
        },
        'update_callback' => function($value, $listing_obj, $field_name ) {
            foreach ($value as $key => $value) {
                #post id to link meta to
                error_log($listing_obj->ID);
                #name of the meta field to update/add
                error_log($key);
                #value of the meta field
                error_log($value);
                update_post_meta($listing_obj->ID, $key, $value);
            }
            return true;
        },
         'schema' => null,
    ) );
} );
 

With this code however I am only able to create meta fields that contain 1 value. When I send an array for each meta field, it results in a 400 – Bad Request, probably because the function can’t handle multiple values per meta item.

On the other hand I don’t think that I need to be able to handle two values per meta object, although this wordpress theme returns two values when I use the GET function.

I’ve tested my code and so far I can achieve what I wanted to achieve 🙂

Hi bcworkz and thanks for responding.

I’ve just added an update_callback and all that based on some other how-to from stackexchange and it now looks like this:

function rest_api_lv_listing_meta() {
    register_rest_field('lv_listing', 'meta', array(
            'get_callback' => 'get_lv_listing_meta',
           'update_callback' => 'update_lv_listing_meta',
           'schema' => null,
        )
    );
}

function get_lv_listing_meta($object) {
    $postId = $object['id'];

    return get_post_meta($postId);
}

function update_lv_listing_meta($meta, $post) {
    $postId = $post->ID;

    foreach ($meta as $data) {
        update_post_meta($postId, $data['key'], $data['value']);
    }
}

add_action('rest_api_init', 'rest_api_lv_listing_meta');

If there is meta available for the post type, it is shown in the JSON GET.

If i now however do this POST request:

{	
"status": "publish",	
"title":  "Homegrown",	
"content": "<p>Quisque</p>" ,
"excerpt": "<p>Quisque vel sem ac enim facilisis ultrices. Vivamus neque sapien]<\/p>\n",	
"comment_status": "closed",		
"listing_amenities": [420, 421, 422, 448, 449],	
"listing_category": [419,  430], 	
"listing_location": [459], 
"listing_keyword": [349, 350, 352, 362],	
"meta": {		
  "lv_listing_lng": ["-0.146984374219"],		
  "lv_listing_lat": ["51.5167522444"],		
  "_phone2": ["207-2363-4657"],
  "_address": ["14 Sample St. London 316"], 
  "_email": ["[email protected]"],		
  "_website": ["http:\/\/javothemes.com\/javo-spot"]	
 }
} 

For a minute I thought it was related to multiple “values” per each meta item, but after removing them (as in the example above) it still doesn’t work.

The response I get to my POST request is this, where the meta array is shown as empty.

{
    "data": {
        "id": 10583,
        "date": "2018-03-31T18:54:06",
        "date_gmt": "2018-03-31T18:54:06",
        "guid": {
            "rendered": "http://mywebsite.com/listing/homegrown-3/",
            "raw": "http://mywebsite.com/listing/homegrown-3/"
        },
        "modified": "2018-03-31T18:54:06",
        "modified_gmt": "2018-03-31T18:54:06",
        "password": "",
        "slug": "homegrown-3",
        "status": "publish",
        "type": "lv_listing",
        "link": "http://mywebsite.com/listing/homegrown-3/",
        "title": {
            "raw": "Homegrown",
            "rendered": "Homegrown"
        },
        "content": {
            "raw": "<p>Quisque</p>",
            "rendered": "<p>Quisque</p>
",
            "protected": false
        },
        "excerpt": {
            "raw": "<p>Quisque vel sem ac enim facilisis ultrices. Vivamus neque sapien]</p>
",
            "rendered": "<p>Quisque vel sem ac enim facilisis ultrices. Vivamus neque sapien]</p>
",
            "protected": false
        },
        "author": 2,
        "featured_media": 0,
        "comment_status": "closed",
        "ping_status": "closed",
        "template": "",
        "listing_amenities": [
            420,
            421,
            422,
            448,
            449
        ],
        "listing_category": [
            419,
            430
        ],
        "listing_location": [
            459
        ],
        "listing_keyword": [
            349,
            350,
            352,
            362
        ],
        "meta": []
    },
    "headers": {
        "Location": "http://mywebsite.com/wp-json/wp/v2/lv_listing/10583",
        "Allow": "GET, POST"
    },
    "status": 201
}

Any quick hints on what I’m doing wrong? I suspect something is up with the update_post_meta statement that I’ve made there and i’m wondering whether or not it should be an array. Unfortunately my PHP skills really aren’t that good to get the syntax correct. I tried making some changes to it based on the official WP API example you linked earlier but that just ends up with an internal server error :/.

• This reply was modified 8 years, 2 months ago by bassius.

Thanks for that then 🙂

Could you tell me how I can style the thumbnail element in CSS? Apparently I do not need to make a seperate PHP line in the index.php, which causes me to not have a seperate div for the thumbs.

Yes, and it doesn’t give me the option to enable thumbnails. What I can check there is:

– Categories
– Post
– Tags
– kandidaat (taxonomy)
– Featured Image
– WP Calendar Event
– Excerpt
– Send Trackbacks
– Custom Fields
– Discussion Comments
– Slug
– Author
– Revisions

Featured image is not the correct one if im right.