How to Add extra arguments into exsisting singular post type

[mohan-neethu]

I need to add extra Arguments for Post type "Post" (Singular post). Like Id, idType, asPreview I need to add additional new Argumet into Singular Post. How can I add this?
@jasonbahl Could you please help me here?

[simplenotezy]

I am curious about this too

[justlevine]

Hey ya'll

Currently this is a two-step process:

First, you need to filter the connection config to add the input args to the schema:

add_filter(
  'graphql_wp_connection_type_config',
  static function( array $config ): array {
    // Add an input arg only for RootQuery -> Posts.
    if ( 'RootQuery' !== $config['fromType'] || 'Post' !== $config['toType'] ) {
      return $config;
    }

    $config['connectionArgs'] = array_merge(
      $config['connectionArgs'],
      [ 
        'myCustomInput' => [
          'type' => 'String'
          'description' => 'What this does to the query',
        ],
        // other new input field configs
      ]
    );

    return $config;  
  },
  10
);

Then you have to tell the connection resolver what to do with your new arg:

add_filter(
  'graphql_connection_query_args',
  function( $query_args, $connection_resolver ) {
    // bail if not a post object resolver.
    if (  ! $connection_resolver instanceof \WPGraphQL\Data\Connection\PostObjectConnectionResolver::class ) {
      return $query_args;
    }
    // the input args are stored inside $query_args
    if ( isset( $query_args['graphql_args']['where']['myCustomInput'] ) {
       // Alter the query args somehow based on the input value.
       $query_args....
    }

    return $query_args;
  },
  10,
  2,
);

Let us know if you have any further questions :-)

[okansahin]

The condition should be:

if( 'RootQuery' !== $config['fromType'] || 'Post' !== $config['toType'] ) {