接收表单过来的数据就在load这一部就插入了数据库 [ 2.0 版本 ]

load没有保存数据的，save才是真正的保存到数据库。
请看源码：

    /**
     * Populates the model with the data from end user.
     * The data to be loaded is `$data[formName]`, where `formName` refers to the value of [[formName()]].
     * If [[formName()]] is empty, the whole `$data` array will be used to populate the model.
     * The data being populated is subject to the safety check by [[setAttributes()]].
     * @param array $data the data array. This is usually `$_POST` or `$_GET`, but can also be any valid array
     * supplied by end user.
     * @param string $formName the form name to be used for loading the data into the model.
     * If not set, [[formName()]] will be used.
     * @return boolean whether the model is successfully populated with some data.
     */
    public function load($data, $formName = null)
    {
        $scope = $formName === null ? $this->formName() : $formName;
        if ($scope === '' && !empty($data)) {
            $this->setAttributes($data);

            return true;
        } elseif (isset($data[$scope])) {
            $this->setAttributes($data[$scope]);

            return true;
        } else {
            return false;
        }
    }

    /**
     * Saves the current record.
     *
     * This method will call [[insert()]] when [[isNewRecord]] is true, or [[update()]]
     * when [[isNewRecord]] is false.
     *
     * For example, to save a customer record:
     *
     * ~~~
     * $customer = new Customer;  // or $customer = Customer::findOne($id);
     * $customer->name = $name;
     * $customer->email = $email;
     * $customer->save();
     * ~~~
     *
     *
     * @param boolean $runValidation whether to perform validation before saving the record.
     * If the validation fails, the record will not be saved to database.
     * @param array $attributeNames list of attribute names that need to be saved. Defaults to null,
     * meaning all attributes that are loaded from DB will be saved.
     * @return boolean whether the saving succeeds
     */
    public function save($runValidation = true, $attributeNames = null)
    {
        if ($this->getIsNewRecord()) {
            return $this->insert($runValidation, $attributeNames);
        } else {
            return $this->update($runValidation, $attributeNames) !== false;
        }
    }

最简单的验证就是你把save()给注释掉，再试一下就知道结果了。