13316763745

Committed 13 Feb 2025 08:45PM UTC coverage: 82.712% (-0.3%) from 83.023%

Build # 13316763745

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web-flow

Commit Message

Merge pull request #3307 from wp-graphql/release/v2.0.0

release: v2.0.0

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195 of 270 new or added lines in 20 files covered. (72.22%)

180 existing lines in 42 files now uncovered.

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97.0

/src/Type/WPConnectionType.php

<?php
namespace WPGraphQL\Type;

use GraphQL\Error\UserError;
use WPGraphQL\Registry\TypeRegistry;
use WPGraphQL\Type\InterfaceType\PageInfo;
use WPGraphQL\Utils\Utils;

/**
 * Class WPConnectionType
 *
 * @package WPGraphQL\Type
 */
class WPConnectionType {

        /**
         * Configuration for how auth should be handled on the connection field
         *
         * @var array<string,mixed>
         */
        protected $auth;

        /**
         * The config for the connection
         *
         * @var array<string,mixed>
         */
        protected $config;

        /**
         * The args configured for the connection
         *
         * @var array<string,array<string,mixed>>
         */
        protected $connection_args;

        /**
         * The fields to show on the connection
         *
         * @var array<string,mixed>
         */
        protected $connection_fields;

        /**
         * @var string[]|null
         */
        protected $connection_interfaces;

        /**
         * The name of the connection
         *
         * @var mixed|string
         */
        protected $connection_name;

        /**
         * The fields to expose on the edge of the connection
         *
         * @var array<string,array<string,mixed>>
         */
        protected $edge_fields;

        /**
         * The name of the field the connection will be exposed as
         *
         * @var string
         */
        protected $from_field_name;

        /**
         * The name of the GraphQL Type the connection stems from
         *
         * @var string
         */
        protected $from_type;

        /**
         * Whether the connection is a one-to-one connection (default is false)
         *
         * @var bool
         */
        protected $one_to_one;

        /**
         * The Query Class that is used to resolve the connection.
         *
         * @var string
         */
        protected $query_class;

        /**
         * The resolver function to resolve the connection
         *
         * @var callable(mixed $root,array<string,mixed> $args,\WPGraphQL\AppContext $context,\GraphQL\Type\Definition\ResolveInfo $info):mixed
         */
        protected $resolve_connection;

        /**
         * @var mixed|null
         */
        protected $resolve_cursor;

        /**
         * Whether to  include and generate the default GraphQL interfaces on the connection Object types.
         *
         * @var bool
         */
        protected $include_default_interfaces;

        /**
         * The name of the GraphQL Type the connection connects to
         *
         * @var string
         */
        protected $to_type;

        /**
         * The WPGraphQL TypeRegistry
         *
         * @var \WPGraphQL\Registry\TypeRegistry
         */
        protected $type_registry;

        /**
         * The where args for the connection
         *
         * @var array<string,array<string,mixed>>
         */
        protected $where_args = [];

        /**
         * WPConnectionType constructor.
         *
         * @param array<string,mixed>              $config        The config array for the connection
         * @param \WPGraphQL\Registry\TypeRegistry $type_registry Instance of the WPGraphQL Type Registry
         *
         * @throws \Exception
         */
        public function __construct( array $config, TypeRegistry $type_registry ) {
                $this->type_registry = $type_registry;

                /**
                 * Filter the config of WPConnectionType
                 *
                 * @param array<string,mixed>              $config             Array of configuration options passed to the WPConnectionType when instantiating a new type
                 * @param \WPGraphQL\Type\WPConnectionType $wp_connection_type The instance of the WPConnectionType class
                 */
                $config = apply_filters( 'graphql_wp_connection_type_config', $config, $this );

                $this->validate_config( $config );

                $this->config    = $config;
                $this->from_type = $config['fromType'];
                $this->to_type   = $config['toType'];

                /**
                 * Filter the connection field name.
                 *
                 * @internal This filter is internal and used by rename_graphql_field(). It is not intended for use by external code.
                 *
                 * @param string $from_field_name The name of the field the connection will be exposed as.
                 */
                $this->from_field_name = apply_filters( "graphql_wp_connection_{$this->from_type}_from_field_name", $config['fromFieldName'] );

                $this->connection_name = ! empty( $config['connectionTypeName'] ) ? $config['connectionTypeName'] : $this->get_connection_name( $this->from_type, $this->to_type, $this->from_field_name );

                /**
                 * Bail if the connection has been de-registered or excluded.
                 */
                if ( ! $this->should_register() ) {
                        return;
                }

                $this->auth                       = array_key_exists( 'auth', $config ) && is_array( $config['auth'] ) ? $config['auth'] : [];
                $this->connection_fields          = array_key_exists( 'connectionFields', $config ) && is_array( $config['connectionFields'] ) ? $config['connectionFields'] : [];
                $this->connection_args            = array_key_exists( 'connectionArgs', $config ) && is_array( $config['connectionArgs'] ) ? $config['connectionArgs'] : [];
                $this->edge_fields                = array_key_exists( 'edgeFields', $config ) && is_array( $config['edgeFields'] ) ? $config['edgeFields'] : [];
                $this->resolve_cursor             = array_key_exists( 'resolveCursor', $config ) && is_callable( $config['resolve'] ) ? $config['resolveCursor'] : null;
                $this->resolve_connection         = array_key_exists( 'resolve', $config ) && is_callable( $config['resolve'] ) ? $config['resolve'] : static function () {
                        return null;
                };
                $this->where_args                 = [];
                $this->one_to_one                 = isset( $config['oneToOne'] ) && true === $config['oneToOne'];
                $this->connection_interfaces      = isset( $config['connectionInterfaces'] ) && is_array( $config['connectionInterfaces'] ) ? $config['connectionInterfaces'] : [];
                $this->include_default_interfaces = isset( $config['includeDefaultInterfaces'] ) ? (bool) $config['includeDefaultInterfaces'] : true;
                $this->query_class                = array_key_exists( 'queryClass', $config ) && ! empty( $config['queryClass'] ) ? $config['queryClass'] : null;

                /**
                 * Run an action when the WPConnectionType is instantiating.
                 *
                 * @param array<string,mixed>              $config             Array of configuration options passed to the WPObjectType when instantiating a new type
                 * @param \WPGraphQL\Type\WPConnectionType $wp_connection_type The instance of the WPConnectionType class
                 *
                 * @since 1.13.0
                 */
                do_action( 'graphql_wp_connection_type', $config, $this );

                $this->register_connection();
        }

        /**
         * Validates that essential key/value pairs are passed to the connection config.
         *
         * @param array<string,mixed> $config The config array for the connection.
         *
         * @throws \GraphQL\Error\UserError If the config is invalid.
         */
        protected function validate_config( array $config ): void {
                if ( ! array_key_exists( 'fromType', $config ) ) {
                        throw new UserError( esc_html__( 'Connection config needs to have at least a fromType defined', 'wp-graphql' ) );
                }

                if ( ! array_key_exists( 'toType', $config ) ) {
                        throw new UserError( esc_html__( 'Connection config needs to have a "toType" defined', 'wp-graphql' ) );
                }

                if ( ! array_key_exists( 'fromFieldName', $config ) || ! is_string( $config['fromFieldName'] ) ) {
                        throw new UserError( esc_html__( 'Connection config needs to have "fromFieldName" defined as a string value', 'wp-graphql' ) );
                }
        }

        /**
         * Get edge interfaces
         *
         * @param string[] $interfaces Array of interfaces to add to the edge.
         *
         * @return string[]
         */
        protected function get_edge_interfaces( array $interfaces = [] ): array {

                // Only include the default interfaces if the user hasnt explicitly opted out.
                if ( false !== $this->include_default_interfaces ) {
                        $interfaces[] = Utils::format_type_name( $this->to_type . 'ConnectionEdge' );
                }

                if ( ! empty( $this->connection_interfaces ) ) {
                        foreach ( $this->connection_interfaces as $connection_interface ) {
                                $interfaces[] = str_ends_with( $connection_interface, 'Edge' ) ? $connection_interface : $connection_interface . 'Edge';
                        }
                }
                return $interfaces;
        }

        /**
         * Utility method that formats the connection name given the name of the from Type and the to
         * Type
         *
         * @param string $from_type        Name of the Type the connection is coming from
         * @param string $to_type          Name of the Type the connection is going to
         * @param string $from_field_name  Acts as an alternative "toType" if connection type already defined using $to_type.
         */
        public function get_connection_name( string $from_type, string $to_type, string $from_field_name ): string {

                // Create connection name using $from_type + To + $to_type + Connection.
                $connection_name = ucfirst( $from_type ) . 'To' . ucfirst( $to_type ) . 'Connection';

                // If connection type already exists with that connection name. Set connection name using
                // $from_field_name + To + $to_type + Connection.
                if ( $this->type_registry->has_type( $connection_name ) ) {
                        $connection_name = ucfirst( $from_type ) . 'To' . ucfirst( $from_field_name ) . 'Connection';
                }

                return $connection_name;
        }

        /**
         * If the connection includes connection args in the config, this registers the input args
         * for the connection
         *
         * @throws \Exception
         */
        protected function register_connection_input(): void {
                // If there are no connection args, bail
                if ( empty( $this->connection_args ) ) {
                        return;
                }

                $input_fields = $this->connection_args;

                // If input fields not array, bail
                if ( ! is_array( $input_fields ) ) {
                        return;
                }

                $input_name = $this->connection_name . 'WhereArgs';

                $this->where_args = [
                        'where' => [
                                'description' => __( 'Arguments for filtering the connection', 'wp-graphql' ),
                                'type'        => $input_name,
                        ],
                ];

                // Only register the input type if it hasn't already been registered.
                if ( ! $this->type_registry->has_type( $input_name ) ) {
                        $this->type_registry->register_input_type(
                                $input_name,
                                [
                                        'description' => sprintf(
                                        // translators: %s is the name of the connection
                                                __( 'Arguments for filtering the %s connection', 'wp-graphql' ),
                                                $this->connection_name
                                        ),
                                        'fields'      => $input_fields,
                                        'queryClass'  => $this->query_class,
                                ]
                        );
                }
        }

        /**
         * Registers the One to One Connection Edge type to the Schema
         *
         * @throws \Exception
         */
        protected function register_one_to_one_connection_edge_type(): void {
                if ( $this->type_registry->has_type( $this->connection_name . 'Edge' ) ) {
                        return;
                }

                // Only include the default interfaces if the user hasnt explicitly opted out.
                $default_interfaces = false !== $this->include_default_interfaces ? [
                        'OneToOneConnection',
                        'Edge',
                ] : [];
                $interfaces         = $this->get_edge_interfaces( $default_interfaces );

                $this->type_registry->register_object_type(
                        $this->connection_name . 'Edge',
                        [
                                'interfaces'  => $interfaces,
                                'description' => sprintf(
                                        // translators: Placeholders are for the name of the Type the connection is coming from and the name of the Type the connection is going to
                                        __( 'Connection between the %1$s type and the %2$s type', 'wp-graphql' ),
                                        $this->from_type,
                                        $this->to_type
                                ),
                                'fields'      => array_merge(
                                        [
                                                'node' => [
                                                        'type'              => [ 'non_null' => $this->to_type ],
                                                        'description'       => __( 'The node of the connection, without the edges', 'wp-graphql' ),
                                                        'deprecationReason' => ! empty( $this->config['deprecationReason'] ) ? $this->config['deprecationReason'] : null,
                                                ],
                                        ],
                                        $this->edge_fields
                                ),
                        ]
                );
        }

        /**
         * Registers the PageInfo type for the connection
         *
         * @throws \Exception
         */
        public function register_connection_page_info_type(): void {
                if ( $this->type_registry->has_type( $this->connection_name . 'PageInfo' ) ) {
                        return;
                }

                $this->type_registry->register_object_type(
                        $this->connection_name . 'PageInfo',
                        [
                                'interfaces'  => [ $this->to_type . 'ConnectionPageInfo' ],
                                'description' => sprintf(
                                        // translators: %s is the name of the connection.
                                        __( 'Page Info on the "%s"', 'wp-graphql' ),
                                        $this->connection_name
                                ),
                                'fields'      => PageInfo::get_fields(),
                        ]
                );
        }

        /**
         * Registers the Connection Edge type to the Schema
         *
         * @throws \Exception
         */
        protected function register_connection_edge_type(): void {
                if ( $this->type_registry->has_type( $this->connection_name . 'Edge' ) ) {
                        return;
                }
                // Only include the default interfaces if the user hasnt explicitly opted out.
                $default_interfaces = false === $this->include_default_interfaces ? [
                        'Edge',
                ] : [];
                $interfaces         = $this->get_edge_interfaces( $default_interfaces );

                $this->type_registry->register_object_type(
                        $this->connection_name . 'Edge',
                        [
                                'description' => __( 'An edge in a connection', 'wp-graphql' ),
                                'interfaces'  => $interfaces,
                                'fields'      => array_merge(
                                        [
                                                'cursor' => [
                                                        'type'              => 'String',
                                                        'description'       => __( 'A cursor for use in pagination', 'wp-graphql' ),
                                                        'resolve'           => $this->resolve_cursor,
                                                        'deprecationReason' => ! empty( $this->config['deprecationReason'] ) ? $this->config['deprecationReason'] : null,
                                                ],
                                                'node'   => [
                                                        'type'              => [ 'non_null' => $this->to_type ],
                                                        'description'       => __( 'The item at the end of the edge', 'wp-graphql' ),
                                                        'deprecationReason' => ! empty( $this->config['deprecationReason'] ) ? $this->config['deprecationReason'] : null,
                                                ],
                                        ],
                                        $this->edge_fields
                                ),
                        ]
                );
        }

        /**
         * Registers the Connection Type to the Schema
         *
         * @throws \Exception
         */
        protected function register_connection_type(): void {
                if ( $this->type_registry->has_type( $this->connection_name ) ) {
                        return;
                }

                $interfaces   = ! empty( $this->connection_interfaces ) ? $this->connection_interfaces : [];
                $interfaces[] = Utils::format_type_name( $this->to_type . 'Connection' );

                // Only include the default interfaces if the user has not explicitly opted out.
                if ( false !== $this->include_default_interfaces ) {
                        $interfaces[] = 'Connection';
                }

                $this->type_registry->register_object_type(
                        $this->connection_name,
                        [
                                'description'       => sprintf(
                                        // translators: the placeholders are the name of the Types the connection is between.
                                        __( 'Connection between the %1$s type and the %2$s type', 'wp-graphql' ),
                                        $this->from_type,
                                        $this->to_type
                                ),
                                'interfaces'        => $interfaces,
                                'connection_config' => $this->config,
                                'fields'            => $this->get_connection_fields(),
                        ]
                );
        }

        /**
         * Returns fields to be used on the connection
         *
         * @return array<string,array<string,mixed>>
         */
        protected function get_connection_fields(): array {
                return array_merge(
                        [
                                'pageInfo' => [
                                        'type'        => [ 'non_null' => $this->connection_name . 'PageInfo' ],
                                        'description' => __( 'Information about pagination in a connection.', 'wp-graphql' ),
                                ],
                                'edges'    => [
                                        'type'        => [ 'non_null' => [ 'list_of' => [ 'non_null' => $this->connection_name . 'Edge' ] ] ],
                                        // translators: %s is the name of the connection.
                                        'description' => sprintf( __( 'Edges for the %s connection', 'wp-graphql' ), $this->connection_name ),
                                ],
                                'nodes'    => [
                                        'type'        => [ 'non_null' => [ 'list_of' => [ 'non_null' => $this->to_type ] ] ],
                                        'description' => __( 'The nodes of the connection, without the edges', 'wp-graphql' ),
                                ],
                        ],
                        $this->connection_fields
                );
        }

        /**
         * Get the args used for pagination on connections
         *
         * @return array<string,array<string,mixed>>
         */
        protected function get_pagination_args(): array {
                if ( true === $this->one_to_one ) {
                        $pagination_args = [];
                } else {
                        $pagination_args = [
                                'first'  => [
                                        'type'        => 'Int',
                                        'description' => __( 'The number of items to return after the referenced "after" cursor', 'wp-graphql' ),
                                ],
                                'last'   => [
                                        'type'        => 'Int',
                                        'description' => __( 'The number of items to return before the referenced "before" cursor', 'wp-graphql' ),
                                ],
                                'after'  => [
                                        'type'        => 'String',
                                        'description' => __( 'Cursor used along with the "first" argument to reference where in the dataset to get data', 'wp-graphql' ),
                                ],
                                'before' => [
                                        'type'        => 'String',
                                        'description' => __( 'Cursor used along with the "last" argument to reference where in the dataset to get data', 'wp-graphql' ),
                                ],
                        ];
                }

                return $pagination_args;
        }

        /**
         * Registers the connection in the Graph
         *
         * @throws \Exception
         */
        public function register_connection_field(): void {

                // merge the config so the raw data passed to the connection
                // is passed to the field and can be accessed via $info in resolvers
                $field_config = array_merge(
                        $this->config,
                        [
                                'type'                  => true === $this->one_to_one ? $this->connection_name . 'Edge' : $this->connection_name,
                                'args'                  => array_merge( $this->get_pagination_args(), $this->where_args ),
                                'auth'                  => $this->auth,
                                'isConnectionField'     => true,
                                'deprecationReason'     => ! empty( $this->config['deprecationReason'] ) ? $this->config['deprecationReason'] : null,
                                'description'           => ! empty( $this->config['description'] )
                                        ? $this->config['description']
                                        : sprintf(
                                                // translators: the placeholders are the name of the Types the connection is between.
                                                __( 'Connection between the %1$s type and the %2$s type', 'wp-graphql' ),
                                                $this->from_type,
                                                $this->to_type
                                        ),
                                'resolve'               => function ( $root, $args, $context, $info ) {
                                        $context->connection_query_class = $this->query_class;
                                        $resolve_connection              = $this->resolve_connection;

                                        /**
                                         * Return the results of the connection resolver
                                         */
                                        return $resolve_connection( $root, $args, $context, $info );
                                },
                                'allowFieldUnderscores' => isset( $this->config['allowFieldUnderscores'] ) && true === $this->config['allowFieldUnderscores'],
                        ]
                );

                $this->type_registry->register_field(
                        $this->from_type,
                        $this->from_field_name,
                        $field_config
                );
        }

        /**
         * @throws \Exception
         */
        public function register_connection_interfaces(): void {
                $connection_edge_type = Utils::format_type_name( $this->to_type . 'ConnectionEdge' );

                if ( ! $this->type_registry->has_type( $this->to_type . 'ConnectionPageInfo' ) ) {
                        $this->type_registry->register_interface_type(
                                $this->to_type . 'ConnectionPageInfo',
                                [
                                        'interfaces'  => [ 'WPPageInfo' ],
                                        // translators: %s is the name of the connection edge.
                                        'description' => sprintf( __( 'Page Info on the connected %s', 'wp-graphql' ), $connection_edge_type ),
                                        'fields'      => PageInfo::get_fields(),
                                ]
                        );
                }

                if ( ! $this->type_registry->has_type( $connection_edge_type ) ) {
                        $this->type_registry->register_interface_type(
                                $connection_edge_type,
                                [
                                        'interfaces'  => [ 'Edge' ],
                                        // translators: %s is the name of the type the connection edge is to.
                                        'description' => sprintf( __( 'Edge between a Node and a connected %s', 'wp-graphql' ), $this->to_type ),
                                        'fields'      => [
                                                'node' => [
                                                        'type'        => [ 'non_null' => $this->to_type ],
                                                        // translators: %s is the name of the type the connection edge is to.
                                                        'description' => sprintf( __( 'The connected %s Node', 'wp-graphql' ), $this->to_type ),
                                                ],
                                        ],
                                ]
                        );
                }

                if ( ! $this->one_to_one && ! $this->type_registry->has_type( $this->to_type . 'Connection' ) ) {
                        $this->type_registry->register_interface_type(
                                $this->to_type . 'Connection',
                                [
                                        'interfaces'  => [ 'Connection' ],
                                        // translators: %s is the name of the type the connection is to.
                                        'description' => sprintf( __( 'Connection to %s Nodes', 'wp-graphql' ), $this->to_type ),
                                        'fields'      => [
                                                'edges'    => [
                                                        'type'        => [ 'non_null' => [ 'list_of' => [ 'non_null' => $connection_edge_type ] ] ],
                                                        'description' => sprintf(
                                                                // translators: %1$s is the name of the type the connection is from, %2$s is the name of the type the connection is to.
                                                                __( 'A list of edges (relational context) between %1$s and connected %2$s Nodes', 'wp-graphql' ),
                                                                $this->from_type,
                                                                $this->to_type
                                                        ),
                                                ],
                                                'pageInfo' => [
                                                        'type' => [ 'non_null' => $this->to_type . 'ConnectionPageInfo' ],
                                                ],
                                                'nodes'    => [
                                                        'type'        => [ 'non_null' => [ 'list_of' => [ 'non_null' => $this->to_type ] ] ],
                                                        // translators: %s is the name of the type the connection is to.
                                                        'description' => sprintf( __( 'A list of connected %s Nodes', 'wp-graphql' ), $this->to_type ),
                                                ],
                                        ],
                                ]
                        );
                }
        }

        /**
         * Registers the connection Types and field to the Schema.
         *
         * @todo change to 'Protected'. This is public for now to allow for backwards compatibility.
         *
         * @throws \Exception
         */
        public function register_connection(): void {
                $this->register_connection_input();

                if ( false !== $this->include_default_interfaces ) {
                        $this->register_connection_interfaces();
                }

                if ( true === $this->one_to_one ) {
                        $this->register_one_to_one_connection_edge_type();
                } else {
                        $this->register_connection_page_info_type();
                        $this->register_connection_edge_type();
                        $this->register_connection_type();
                }

                $this->register_connection_field();
        }

        /**
         * Checks whether the connection should be registered to the Schema.
         */
        protected function should_register(): bool {

                // Don't register if the connection has been excluded from the schema.
                $excluded_connections = $this->type_registry->get_excluded_connections();
                if ( in_array( strtolower( $this->connection_name ), $excluded_connections, true ) ) {
                        return false;
                }

                // Don't register if one of the connection types has been excluded from the schema.
                $excluded_types = $this->type_registry->get_excluded_types();
                if ( ( in_array( strtolower( $this->from_type ), $excluded_types, true ) || in_array( strtolower( $this->to_type ), $excluded_types, true ) ) ) {
                        return false;
                }

                return true;
        }
}

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