WPGraphQL respects WordPress core access control rights. This means that data that is only available to authenticated users in the WordPress admin is only available to authenticated users making GraphQL requests. 



Sometimes, you want to expose fields that are restricted by default. 



Take the Post Type Label field, for example. 



Querying for the label of a Post Type as a public user returns a <code>null</code> value by default: 



<figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="1024" height="335" src="https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-08-at-6.10.35-AM-1024x335.png" alt="Screenshot of a query for ContentTypes and their label, showing null value for the label." class="wp-image-7771" srcset="https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-08-at-6.10.35-AM-1024x335.png 1024w, https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-08-at-6.10.35-AM-300x98.png 300w, https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-08-at-6.10.35-AM-768x251.png 768w, https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-08-at-6.10.35-AM.png 1146w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /></figure>



With the following snippet, you can expose the <code>label</code> field to public users:



<pre class="wp-block-code lang-php"><code>add_filter( 'graphql_allowed_fields_on_restricted_type', function( $allowed_restricted_fields, $model_name, $data, $visibility, $owner, $current_user ) {

	if ( 'PostTypeObject' === $model_name ) {
		$allowed_restricted_fields[] = 'label';
	}

	return $allowed_restricted_fields;

}, 10, 6 );</code></pre>



And below we can see the same query, showing the value of the labels to public users.



<figure class="wp-block-image size-large"><img loading="lazy" decoding="async" width="1024" height="333" src="https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-08-at-6.10.22-AM-1-1024x333.png" alt="Screenshot of a query for ContentTypes and their label, showing the label's value for the label." class="wp-image-7767" srcset="https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-08-at-6.10.22-AM-1-1024x333.png 1024w, https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-08-at-6.10.22-AM-1-300x98.png 300w, https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-08-at-6.10.22-AM-1-768x250.png 768w, https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-08-at-6.10.22-AM-1.png 1143w" sizes="auto, (max-width: 1024px) 100vw, 1024px" /></figure>

Showing Post Type labels in public queries

The following snippet shows how to add the &#8220;Edit&#8221; link as a GraphQL field to all post types: 



<pre class="wp-block-code lang-php"><code>add_action( 'graphql_register_types', function() {

	register_graphql_field( 'ContentNode', 'editLink', [
		'type' => 'String',
		'description' => __( 'Link to edit the content', 'your-textdomain' ),
		'resolve' => function( \WPGraphQL\Model\Post $post, $args, $context, $info ) {
		 return get_edit_post_link( $post->databaseId );
		}
	]);

} );</code></pre>



This could then be queried like so: 



<div class="wp-block-image"><figure class="aligncenter size-large is-resized"><img loading="lazy" decoding="async" src="https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-01-at-8.02.58-AM-1024x409.png" alt="Screenshot of a GraphQL Query for posts with their editLink" class="wp-image-7721" width="852" height="340" srcset="https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-01-at-8.02.58-AM-1024x409.png 1024w, https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-01-at-8.02.58-AM-300x120.png 300w, https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-01-at-8.02.58-AM-768x307.png 768w, https://content.wpgraphql.com/wp-content/uploads/2020/12/Screen-Shot-2020-12-01-at-8.02.58-AM.png 1168w" sizes="auto, (max-width: 852px) 100vw, 852px" /><figcaption>Screenshot of a GraphQL Query for posts with their editLink</figcaption></figure></div>

Add Edit Link to All Post Types

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