Question

不知道这是怎么回事。我在尝试建立新模型的实例时遇到错误。一直在尝试一些不同的解决方案来顺利导出模型。经过数小时的尝试，我决定将我的第一个问题发布在stackoverflow上。

谢谢！

Note_model.js：


const Schema = mongoose.Schema;

const NoteSchema = new Schema({
  a_string: String,
  a_date: Date
});

module.exports = mongoose.model('Note', NoteSchema);

Article.js

const mongoose = require('mongoose');
import Layout from '../components/Layout'
const Note = require('../models/Note_model');



class Article extends Component {
  constructor(props) {
    super(props);
    this.state = {
      value: 'Write new Article.'
    };

    this.handleChange = this.handleChange.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
  }

  handleChange(event) {
    this.setState({value: event.target.value});
  }

  handleSubmit(event) {

   alert('An article was submitted: ' + this.state.value);
   var awesome_instance = new Note({ a_string: "hey" });

   awesome_instance.save(function (err) {
   if (err) return handleError(err);
   });
   }

render() {
    return (
        <div className="container">
     <Layout title="Create Article">
       <form onSubmit={this.handleSubmit}>
        <label>
         Essay:
          <textarea value={this.state.value} onChange={this.handleChange} />
        </label>
        <input type="submit" value="Submit" />
         </form>
      </Layout>
        </div>

    );
  }
}

export default Article;

错误消息：

Article.handleSubmit
./pages/Article.js:27
  24 | 
  25 | alert('An article was submitted: ' + this.state.value);
> 26 | var awesome_instance = new Note({ a_string: "hey" });
     | ^  27 | 
  28 | awesome_instance.save(function (err) {
  29 |   if (err) return handleError(err);

猫鼬错误：在另一个文件中使用模型时，“注释不是构造函数”

0 个答案: