在Javascript中将对象承诺转换为字符串

我正在使用React，Next.Js，semantic-ui-react和Solidity。我的目标是打印出用户地址（从MetaMask）和ProjectTitle（由用户设置）作为语义UI反应卡的元信息。可以打印出“页眉”中的地址，但是我无法将ProjectTitle打印为“元”。标题应该是一个字符串，但是我收到一个对象承诺。

static async getInitialProps() {
    const projects = await factory.methods.getDeployedProjects().call();
    return {
        projects
    };
}

async getProjectTitle(address) {
    let title;
    try {
        title = await factory.methods.projectTitle(address).call();
    } catch (err) {
        console.log('err');
    }
    return title;
}

renderProjects() {
    const items = this.props.projects.map(address => {
        return {
            header: address,
            color: 'green',
            description: (
                <Link route={`/projects/${address}`}>
                    <a>View Project</a>
                </Link>
            ),
            **meta: this.getProjectTitle(address)**,
            fluid: true,
            style: { overflowWrap: 'break-word' }
        };
    }, );
    return <Card.Group items={items} />
}

团结合同的一部分：

address[] public deployedProjects;
mapping(address => string) public projectTitle;

function createProject(string startup, string title, string deadline, string description, uint wage) public {
    address newProject = new Project(startup, title, deadline, description, wage, msg.sender);
    projectTitle[newProject] = title;
    deployedProjects.push(newProject);
}

function getDeployedProjects() public view returns (address[]) {
    return (
        deployedProjects
    );
}

基本框架来自Stephen Grider的Udemy课程“以太坊和团结：完整的开发人员指南”。