Question

我试图通过react-images-upload包上传图片。但是，我不知道API处理应该是什么样子。

到目前为止的React代码：

    renderForm() {
        return (
            <section className="col-md-12 col-sm-12">
                <div className="col-md-6 col-sm-6">
                    <form onSubmit={ this.handleSubmit }>
                        <div className="form-group">
                            <ImageUploader
                                name='image'
                                withIcon={ true }
                                buttonText='Choose images'
                                onChange={ this.onDrop }
                                imgExtension={ ['.jpg', '.png'] }
                                maxFileSize={ 1048576 }
                                withPreview={ true }
                                label='Max file size: 10mb, accepted: jpg, png'
                                fileSizeError='File is too big.'
                                fileTypeError=': not supported extension.'
                            />
                        </div>
                        <input className="btn btn-default" type="submit" value="Submit" />
                    </form>
                </div>
            </section>
        );
    }

handleSubmit(event) {
    event.preventDefault();
    this.props.createSponsor(this.state);
}

onDrop(picture) {
    this.setState({
        pictures: this.state.pictures.concat(picture)
    });
}

constructor(props) {
    super(props);

    this.state = {
        name: '',
        pictures: []
    };

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

和Yii2 API代码。当我试图用UploadedFile :: getInstance（$ model，＆＃39; image＆＃39;）填充$模型时，它在var_dumping之后仍然是空的。

    public function actionCreateSponsor()
    {
        $request = Yii::$app->request;

        if ($request->post()) {
            $model = new Sponsors();
            $model->name = $request->post('name');

            $model->image = UploadedFile::getInstance($model, 'image');

            //var_dump($model); die;

            if (ImageUploadComponent::upload($model)) {
                return Json::encode(['status' => true, 'data' => 'success']);
            } else {
                return Json::encode(['status' => false, 'data' => 'error_not_saved']);
            }
    }

注意：ImageUploadComponent现在是空的。

Answer 1

尝试使用

    $model->image = \yii\web\UploadedFile::getInstanceByName('image');

   //instead of
    $model->image = UploadedFile::getInstance($model, 'image');

Answer 2

由于您没有使用ActiveForm和$model来生成表单，并且您的表单没有特定名称，您必须通过以下方式获取文件：

$model->image = UploadedFile::getInstanceByName('image');

ReactJS使用yii2 api上传图片

2 个答案: