constructor(props) {
    super(props)

    this.state = {
        post: [{
            nome: '',
            conteudo: '',
            comment: false
        }]
    }
    this.handleClickComment = this.handleClickComment.bind(this)

}

handleClickComment(postagem) {
    let indice = postagem.id -1
    let comment = this.state.comment ? false : true
    this.setState({...this.state.post[indice], comment})
}