当我取出条件来加载数据时，它会将数据保存到数据库中，$_POST会获取值，但不会将它们发送到控制器，这种方式在我的其他项目中有效，但在这里无效。如果我使用if(isset($_POST['money']) && isset($_POST['username'])){来保存数据，它会有效，但load()函数无效。
控制器

public function actionSend() {
    $model = new User();
    $model->getErrors();
    if ($model->load(Yii::$app->request->post())) {
        $model->money = 'something';
        $model->username = 'something';
        $model->save();
    }
    return $this->render('send', [
        'model' => $model
    ]);
}

型号

<?php

namespace app\models;
use yii\db\ActiveRecord;

use Yii;

class User extends \yii\db\ActiveRecord {
    public static function tableName() {
        return 'user';
    }

    public function rules() {
        return [
            [['username', 'money'], 'safe'],
            [['username', 'password'], 'string', 'max' => 15],
            [['auth_key', 'access_token'], 'string', 'max' => 32],
            [['money'], 'string', 'max' => 8],
        ];
    }

    public function attributeLabels() {
        return [
            'id' => 'ID',
            'username' => 'Username',
            'password' => 'Password',
            'auth_key' => 'Auth Key',
            'access_token' => 'Access Token',
            'money' => 'Money',
        ];
    }
}

观

<?php
use yii\helpers\Html;
use yii\bootstrap\ActiveForm;
?>

<h2>Send</h2>

<?php $form = ActiveForm::begin([
    'layout' => 'horizontal',
    'fieldConfig' => [
        'template' => "{label}\n<div class=\"col-lg-3\">{input}</div>\n<div class=\"col-lg-8\">{error}</div>",
        'labelOptions' => ['class' => 'col-lg-1 control-label'],
    ],
]); ?>
    <?= $form->field($model, 'username')->textInput(['name' => 'username']) ?>

    <?= $form->field($model, 'money')->textInput(['name' => 'money'])?>

    <div class="form-group">
        <div class="col-lg-offset-1 col-lg-11">
            <?= Html::submitButton('Send', ['class' => 'btn btn-success']) ?>
        </div>
    </div>

<?php ActiveForm::end(); ?>