Reply To: Using acf/update_value in Flexible Content Field

• sporklab

• March 9, 2021 at 10:49 am

Chasing my tail on this, php-fpm config had a typo in the logging setup, all my debugging was going nowhere… Thanks so much though, I’m very happy to now know how to fetch these values in flex content fields – very helpful!

So this seems to work very well. For anyone finding this while searching, I use a lazy-loader (https://github.com/vb/lazyframe) for videos to keep page weight down (and we have some pages with 50+ videos) and for it to look nice and provide flexibility if the user wants to override the default vimeo thumb, I provide a field for the video thumbnail. The user only needs to enter the vimeo video ID.

If the thumbnail/poster field isleft blank, I want to fetch the URL to the thumbnail from vimeo. This does that.

	// Fetch vimeo thumbnail on save - takes video ID as input
	add_filter('acf/update_value/key=field_60412898401c1', 'rf_acf_update_vimeo_thumb_inspo', 20, 4);	
	function rf_acf_update_vimeo_thumb_inspo( $value, $post_id, $field, $original ) {
		/* error_log( "in wfh thumb debug, value is $value", 0 );
		error_log( "in wfh thumb debug, post_id is $post_id", 0 );
		error_log( "in wfh thumb debug, field is " . print_r($field, true), 0 );
		error_log( "in wfh thumb debug, original is $original", 0 ); */
		
		// only set a new value if the field is empty
		if ( $value == '') {
			// get url field's full name (includes flex name, row #, field name concatenated w/"_")
			$field_name = $field['name'];
			// strip this field's name from full name
			$field_name = str_replace('_inspo_thumbnail_url', '', $field_name);
			// append video ID field to stripped name
			$field_name .= '_inspo_vimeo_video_id';
			// use get_post_meta to get the value from the same row (inspo_vimeo_video_id)
  			$vimeo_video_id = get_post_meta($post_id, $field_name, true);
			// get video here
			$vimeo_meta = file_get_contents("https://vimeo.com/api/v2/video/$vimeo_video_id.json");
			$vimeo_meta = json_decode($vimeo_meta);
			$vimeo_thumb = $vimeo_meta[0]->thumbnail_large;
			// set value
			$value = $vimeo_thumb;
			return $value;
		} else {
			error_log('$value was not empty',0);
			return $value;
		}
	}