BP_REST_Topics_Endpoint::get_collection_params()

	public function get_collection_params() {
		$params                        = parent::get_collection_params();
		$params['context']['default']  = 'view';
		$params['per_page']['default'] = bbp_get_topics_per_page();

		$params['author'] = array(
			'description'       => __( 'Author ID, or comma-separated list of IDs.', 'buddyboss' ),
			'default'           => '',
			'type'              => 'string',
			'sanitize_callback' => 'sanitize_key',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['author_exclude'] = array(
			'description'       => __( 'An array of author IDs not to query from.', 'buddyboss' ),
			'type'              => 'array',
			'items'             => array( 'type' => 'integer' ),
			'sanitize_callback' => 'wp_parse_id_list',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['exclude'] = array(
			'description'       => __( 'An array of topic IDs not to retrieve.', 'buddyboss' ),
			'type'              => 'array',
			'items'             => array( 'type' => 'integer' ),
			'sanitize_callback' => 'wp_parse_id_list',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['include'] = array(
			'description'       => __( 'An array of topic IDs to retrieve.', 'buddyboss' ),
			'type'              => 'array',
			'items'             => array( 'type' => 'integer' ),
			'sanitize_callback' => 'wp_parse_id_list',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['offset'] = array(
			'description'       => __( 'The number of topics to offset before retrieval.', 'buddyboss' ),
			'type'              => 'integer',
			'sanitize_callback' => 'absint',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['order'] = array(
			'description'       => __( 'Designates ascending or descending order of topics.', 'buddyboss' ),
			'default'           => 'asc',
			'type'              => 'string',
			'enum'              => array( 'asc', 'desc' ),
			'sanitize_callback' => 'sanitize_key',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['orderby'] = array(
			'description'       => __( 'Sort retrieved topics by parameter.', 'buddyboss' ),
			'type'              => 'array',
			'items'             => array(
				'type' => 'string',
				'enum' => array(
					'meta_value',
					'date',
					'ID',
					'author',
					'title',
					'modified',
					'parent',
					'rand',
					'popular',
					'activity',
				),
			),
			'sanitize_callback' => 'bp_rest_sanitize_string_list',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['status'] = array(
			'description'       => __( 'Limit result set to topic assigned a specific status.', 'buddyboss' ),
			'default'           => array( 'publish', 'private' ),
			'type'              => 'array',
			'items'             => array(
				'type' => 'string',
				'enum' => array( 'publish', 'private', 'hidden' ),
			),
			'sanitize_callback' => 'bp_rest_sanitize_string_list',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['parent'] = array(
			'description'       => __( 'Forum ID to retrieve all the topics.', 'buddyboss' ),
			'default'           => '0',
			'type'              => 'integer',
			'sanitize_callback' => 'absint',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['subscriptions'] = array(
			'description'       => __( 'Retrieve subscribed topics by user.', 'buddyboss' ),
			'default'           => false,
			'type'              => 'boolean',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['favorites'] = array(
			'description'       => __( 'Retrieve favorite topics by the current user.', 'buddyboss' ),
			'default'           => false,
			'type'              => 'boolean',
			'validate_callback' => 'rest_validate_request_arg',
		);

		$params['tag'] = array(
			'description'       => __( 'Search topic with specific tag.', 'buddyboss' ),
			'type'              => 'string',
			'validate_callback' => 'rest_validate_request_arg',
		);

		/**
		 * Filters the collection query params.
		 *
		 * @param array $params Query params.
		 */
		return apply_filters( 'bp_rest_topics_collection_params', $params );
	}