//server.js
app.get("/:url", (req, res) => {
    pool.connect()
        .then(client => {
            client.query(`
                select * from posts
                where url like '%${param}%'
            `)
                .then(data => {
                    client.release();
                    return res.status(200).json({ success: true, data: data.rows[0] });
                })
});

//app.js
class App extends Component {
    componentWillMount() {
        if (this.props.path > 1) {
            Client.search(this.props.path, data => {
                console.log(data);
            });
        }
    }
}