Eliminar un comentario - React js
En realidad, he estado tratando de agregar una funcionalidad 'Eliminar un comentario' a mi sistema de Cuadro de comentarios.
Aquí está mi código: -
var Comment = React.createClass({
handleClick: function(e){
e.preventDefault();
var commentId = this.props.comment.id;
return this.props.onDelete(commentId);
},
render: function () {
return (
<div className="comment">
<h4 className="commentAuthor">
{this.props.comment.email}
</h4>
{this.props.comment.comment}
<a onClick={this.handleClick}> × </a>
</div>
);
}
});
var CommentList = React.createClass({
handleDelete: function(commentId){
return this.props.del(commentId);
},
render: function () {
var commentNodes = this.props.comments.map(function (comment, index) {
return (
<Comment comment = {comment} onDelete = {this.handleDelete} key = {index} />
);
});
return (
<div className="commentList">
{commentNodes}
</div>
);
}
});
var CommentBox = React.createClass({
getInitialState: function () {
return {comments: []};
},
componentDidMount: function () {
this.loadCommentsFromServer();
},
loadCommentsFromServer: function () {
$.ajax({
url: this.props.url,
dataType: 'json',
success: function (comments) {
this.setState({comments: comments});
}.bind(this),
error: function (xhr, status, err) {
console.error(this.props.url, status, err.toString());
}.bind(this)
});
},
handleCommentSubmit: function(comment) {
var comments = this.state.comments;
var newComments = comments.concat([comment]);
this.setState({comments: newComments});
$.ajax({
url: this.props.url,
dataType: 'json',
type: 'POST',
data: {"comment": comment},
success: function(data) {
this.loadCommentsFromServer();
}.bind(this),
error: function(xhr, status, err) {
console.error(this.props.url, status, err.toString());
}.bind(this)
});
},
delc: function(commentId){
$.ajax({
url: this.props.url,
data: {"id" : commentId},
type: 'DELETE',
dataType: 'json',
success: function (comments) {
this.setState({comments: comments});
}.bind(this),
error: function(xhr, status, err) {
console.error(this.props.url, status, err.toString());
}.bind(this)
});
},
render: function () {
return (
<div className="commentBox">
<h1>Comments</h1>
<CommentList del={this.delc} comments={this.state.comments} />
<CommentForm onCommentSubmit={this.handleCommentSubmit}/>
</div>
);
}
});
var CommentForm = React.createClass({
handleSubmit: function() {
var email = this.refs.email.getDOMNode().value.trim();
var comment = this.refs.comment.getDOMNode().value.trim();
this.props.onCommentSubmit({email: email, comment: comment});
this.refs.email.getDOMNode().value = '';
this.refs.comment.getDOMNode().value = '';
return false;
},
render: function() {
return (
<form className="commentForm" onSubmit={this.handleSubmit}>
<input type="email" placeholder="Your email" ref="email" />
<input type="text" placeholder="Say something..." ref="comment" />
<input type="submit" value="Post" />
</form>
);
}
});
var ready = function () {
React.renderComponent(
<CommentBox url="18/comments.json" />,
document.getElementById('art')
);
};
$(document).ready(ready);
Ahora, cuando intento eliminar un comentario, aparece un error que dice 'Error de tipo no capturado: undefined no es una función'
Al cambiar a la pestaña 'fuente' en devTool, descubrí que el problema está en la función 'onDelete'.
Dice que la función 'onDelete' no está definida.
Creo que el problema se debe a 'esta' palabra clave, pero no estoy seguro.
¿Qué debo hacer para resolver este problema? Avísame si me estoy perdiendo algo (soy un novato)
Gracias de antemano.