扩展Sylius Variant模型后的LogicException

我正在尝试扩展Variant模型，以便我可以在指南here后面的产品中添加我的字段 .

每当我尝试创建产品时，我都会收到此错误消息

表单的视图数据应该是Faumix \ ProductPriceBundle \ Entity \ Variant类的实例，但是是Sylius \ Bundle \ CoreBundle \ Model \ Variant类的实例 . 您可以通过将“data_class”选项设置为null或添加视图转换器来将此类错误设置为null，该视图转换器将类Sylius \ Bundle \ CoreBundle \ Model \ Variant的实例转换为Faumix \ ProductPriceBundle \ Entity \ Variant的实例 . 500内部服务器错误 - LogicException

这是我的实体

<?php

namespace Faumix\ProductPriceBundle\Entity;


use Sylius\Bundle\CoreBundle\Model\Variant as BaseVariant;



class Variant extends BaseVariant{

protected $unitCost;

protected $landedCost;

protected $averagePrice;

protected $profitMargin;

protected $discountA;

protected $discountB;

protected $supplier;

protected $supplierCurrency;

protected $supplierPrice;

protected $reorderLevel;


/**
 * {@inheritdoc}
 */
public function setUnitCost($unitCost)
{
    $this->unitCost = $unitCost;

    return $this;
}

/**
 * {@inheritdoc}
 */
public function getUnitCost()
{
    return $this->unitCost;
}

/**
 * {@inheritdoc}
 */
public function setLandedCost($landedCost)
{
    $this->landedCost = $landedCost;

    return $this;
}

/**
 * {@inheritdoc}
 */
public function getLandedCost()
{
    return $this->landedCost;
}

/**
 * {@inheritdoc}
 */
public function setAveragePrice($averagePrice)
{
    $this->averagePrice = $averagePrice;

    return $this;
}

/**
 * {@inheritdoc}
 */
public function getAveragePrice()
{
    return $this->averagePrice;
}


/**
 * {@inheritdoc}
 */
public function setProfitMargin($profitMargin)
{
    $this->profitMargin = $profitMargin;

    return $this;
}

/**
 * {@inheritdoc}
 */
public function getProfitMargin()
{
    return $this->profitMargin;
}

/**
 * {@inheritdoc}
 */
public function setDiscountA($discountA)
{
    $this->discountA = $discountA;

    return $this;
}

/**
 * {@inheritdoc}
 */
public function getDiscountA()
{
    return $this->discountA;
}

/**
 * {@inheritdoc}
 */
public function setDiscountB($discountB)
{
    $this->discountB = $discountB;

    return $this;
}

/**
 * {@inheritdoc}
 */
public function getDiscountB()
{
    return $this->discountB;
}


/**
 * {@inheritdoc}
 */
public function setSupplierPrice($supplierPrice)
{
    $this->supplierPrice = $supplierPrice;

    return $this;
}

/**
 * {@inheritdoc}
 */
public function getSupplierPrice()
{
    return $this->supplierPrice;
}


/**
 * {@inheritdoc}
 */
public function setReorderLevel($reorderLevel)
{
    $this->reorderLevel = $reorderLevel;

    return $this;
}

/**
 * {@inheritdoc}
 */
public function getReorderLevel()
{
    return $this->reorderLevel;
}

/**
 * {@inheritdoc}
 */
public function setSupplier($supplier)
{
    $this->supplier = $supplier;

    return $this;
}

/**
 * {@inheritdoc}
 */
public function getSupplier()
{
    return $this->supplier;
}

/**
 * {@inheritdoc}
 */
public function setSupplierCurrency($currency)
{
    $this->supplierCurrency = $currency;

    return $this;
}

/**
 * {@inheritdoc}
 */
public function getSupplierCurrency()
{
    return $this->supplierCurrency;
}


}

这是我的实体xml文件

<?xml version="1.0" encoding="UTF-8"?>

<doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping"
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping
                              http://doctrine-project.org/schemas/orm/doctrine-mapping.xsd"
              xmlns:gedmo="http://gediminasm.org/schemas/orm/doctrine-extensions-mapping"
    >

<entity name="Faumix\ProductPriceBundle\Entity\Variant" table="sylius_variant">

    <field name="unitCost" column="unit_cost" type="float" nullable="true">
        <gedmo:versioned />
    </field>
    <field name="landedCost" column="landed_cost" type="float" nullable="true"/>
    <field name="profitMargin" column="profitMargin" type="integer" nullable="true"/>
    <field name="averagePrice" column="average_price" type="float" nullable="true" />
    <field name="discountA" column="discount_a" type="float" nullable="true">
        <gedmo:versioned />
    </field>
    <field name="discountB" column="discount_b" type="float" nullable="true">
        <gedmo:versioned />
    </field>
    <field name="reorderLevel" column="reorder_level" type="integer" nullable="true">
        <gedmo:versioned />
    </field>
    <field name="supplierPrice" column="supplier_price" type="float" nullable="true">
        <gedmo:versioned />
    </field>
    <field name="supplier" column="supplier" type="string" nullable="true">
        <gedmo:versioned />
    </field>
    <field name="supplierCurrency" column="supplier_currency" type="string" nullable="true">
        <gedmo:versioned />
    </field>
    <gedmo:loggable />
</entity>

</doctrine-mapping>

到目前为止一切正常，即使我运行php app / console doctrine：schema：update --force更新了表

我不确定出了什么问题，我事件试图扩展表单，但我没有添加所有字段

EDIT 1 我已经扩展了表格，但我现在得到了不同的错误

属性“unitCost”和方法“getUnitCost（）”，“isUnitCost（）”，“hasUnitCost（）”，“__ get（）”都不存在，并且在类“Sylius \ Bundle \ CoreBundle \ Model”中具有公共访问权限\变” . 500内部服务器错误 - NoSuchPropertyException

这是表格类

namespace Faumix\ProductPriceBundle\Form\Type;

use Sylius\Bundle\CoreBundle\Form\Type\VariantType as BaseVariantType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;


class VariantType extends BaseVariantType  {


/**
 * {@inheritdoc}
 */
public function buildForm(FormBuilderInterface $builder, array $options)
{
    parent::buildForm($builder, $options);

    $builder
        ->add('unitCost', 'text', array(
            'data_class' => 'Sylius\Bundle\CoreBundle\Model\Variant',
            'label' => 'Unit Cost',
        ))
        ->add('landedCost', 'sylius_money', array(
            'label' => 'Landed Cost',
            'data_class' => 'Faumix\ProductPriceBundle\Entity\Variant'
        ))
        ->add('averagePrice', 'text', array(
            'label'    => 'average Price',
            'data_class' => 'Faumix\ProductPriceBundle\Entity\Variant'
        ))
        ->add('profitMargin', 'text', array(
            'label'    => 'profit Margin',
            'data_class' => 'Faumix\ProductPriceBundle\Entity\Variant'
        ))
       ->add('discountA', 'text', array(
            'label'    => 'discount A',
            'data_class' => 'Faumix\ProductPriceBundle\Entity\Variant'
        ))
       ->add('discountB', 'text', array(
            'label'    => 'discount B',
            'data_class' => 'Faumix\ProductPriceBundle\Entity\Variant'
        ))
       ->add('supplier', 'text', array(
            'label'    => 'supplier',
            'data_class' => 'Faumix\ProductPriceBundle\Entity\Variant'
        ))
       ->add('supplierCurrency', 'text', array(
            'label'    => 'supplierCurrency',
            'data_class' => 'Faumix\ProductPriceBundle\Entity\Variant'
        ))
       ->add('supplierPrice', 'text', array(
            'label'    => 'supplier Price',
            'data_class' => 'Faumix\ProductPriceBundle\Entity\Variant'
        ))
       ->add('reorderLevel', 'text', array(
            'label'    => 'reorder Level',
            'data_class' => 'Faumix\ProductPriceBundle\Entity\Variant'
        ))


    ;
}


/**
 * {@inheritdoc}
 */
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver
        ->setDefaults(array(
//               'data_class'        => 'Faumix\ProductPriceBundle\Entity\Variant',
           'data_class'        => 'Sylius\Bundle\CoreBundle\Model\Variant',
            'validation_groups' => $this->validationGroups,
            'master'            => false
        ))
    ;
}

}

我试过没有定义data_class，但它似乎没有影响

如果有人能帮助我，我将不胜感激

问候