Symfony 5 - 查找（元素）在删除功能（CRUD）中不起作用（？）

Question

我尝试在 Symfony 中创建我的第一个 API。我的删除功能有点问题。

我的实体class:

<?php

namespace App\Entity;

use App\Repository\InFlowsRepository;
use Doctrine\ORM\Mapping as ORM;


/**
 * @ORM\Entity(repositoryClass=InFlowsRepository::class)
 */
class InFlows
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    public int $id;

    /**
     * @ORM\Column(type="string", length=255)
     */
    public string $inFlowName;

    /**
     * @ORM\Column(type="float")
     */
    public float $inFlowValue;

    /**
     * @ORM\Column(type="string")
     */
    public String $inFlowsDate;

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getInFlowName(): ?string
    {
        return $this->inFlowName;
    }

    public function setInFlowName(string $inFlowName): self
    {
        $this->inFlowName = $inFlowName;

        return $this;
    }

    public function getInFlowValue(): ?float
    {
        return $this->inFlowValue;
    }

    public function setInFlowValue(float $inFlowValue): self
    {
        $this->inFlowValue = $inFlowValue;

        return $this;
    }

    public function getInFlowsDate(): ?String
    {
        return $this->inFlowsDate;
    }

    public function setInFlowsDate(String $inFlowsDate): self
    {
        $this->inFlowsDate = $inFlowsDate;

        return $this;
    }
}

还有我的删除控制器：

     /**
     * @Route("inflows/delete/", name="delete_inflow")
     * @throws Exception
     */
    public function inFlowDelete(Request $id): JsonResponse {

        try {
            $repo = $this->getDoctrine()->getManager();
            $inflows = $repo->getRepository(InFlows::class)->find($id);
            if (!$inflows) {
                throw new \JsonException("There is no data to delete!");
            }
        } catch (Exception $e) {
            return new JsonResponse(["data"=>$e->getMessage()]);
        }
        $repo->remove($inflows);
        $repo->flush();

        return new JsonResponse("Success!");
    }

当我运行我的脚本出现错误时：

An exception occurred while executing \u0027SELECT t0.id AS id_1, t0.in_flow_name AS in_flow_name_2, t0.in_flow_value AS in_flow_value_3, t0.in_flows_date AS in_flows_date_4 FROM in_flows t0 WHERE t0.id = ?\u0027 with params [{\u0022attributes\u0022:{},\u0022request\u0022:{},\u0022query\u0022:{},\u0022server\u0022:{},\u0022files\u0022:{},\u0022cookies\u0022:{},\u0022headers\u0022:{}}]:\n\nSQLSTATE[22P02]: Invalid text representation: 7 ERROR: invalid input syntax for type integer: \u0022DELETE \/inflows\/delete\/?id=1 HTTP\/1.1\r\nAccept: *\/*\r\nAccept-Encoding: gzip, deflate, br\r\nCache-Control: no-cache\r\nConnection: keep-alive\r\nContent-Length: \r\nContent-Type: \r\nHost: 127.0.0.1:8000\r\nMod-Rewrite: On\r\nPostman-Token: 6f77209a-8bad-4109-93a8-4c43647d7849\r\nUser-Agent: PostmanRuntime\/7.28.0\r\nX-Php-Ob-Level: 1\r\n\r\n\u0022e2

我不知道为什么我的指令是“t0.id =？”好像。为什么我的“find($id)”函数不起作用？有办法解决吗？

感谢您的回复。

Answer 1

/**
 * @Route("inflows/delete/{id}", name="delete_inflow")
 */
public function inFlowDelete(InFlows $inFlows): JsonResponse {
    $em = $this->getDoctrine()->getManager();
    $em->remove($inFlows);
    $em->flush();

    return new JsonResponse("Success!");
}

Answer 2

我认为问题在于你没有使用 persist ，当你对数据库进行操作时，你必须坚持你的更改，所以它看起来像 /** * @Route("inflows/delete/", name="delete_inflow") * @throws 异常 */ public 函数 inFlowDelete(Request $id): JsonResponse {

    try {
        $repo = $this->getDoctrine()->getManager();
        $inflows = $repo->getRepository(InFlows::class)->find($id);
        if (!$inflows) {
            throw new \JsonException("There is no data to delete!");
        }
    } catch (Exception $e) {
        return new JsonResponse(["data"=>$e->getMessage()]);
    }
    $repo->remove($inflows);
    $repo->persist();
    $repo->flush();

    return new JsonResponse("Success!");
}

如果我可以给你一个建议，不要使用 remove()，因为它会从物理上删除你的行，有时最好从逻辑上删除，所以使用 setDeletedAt(new \Datetime());

Answer 3

所以我删除了我的 table 并创建了新的迁移文件。我的代码仍然与我在@nikoshr 解决方案中发布的代码相同。它有效！很奇怪，但正如他们所说 - 灯笼下最黑暗。

Answer 4

我想我知道出了什么问题，这里你输入的是一个包含很多信息的请求（httpd 请求）你可以在你的浏览器中检查它，无论如何最好的解决方案是将 id 作为参数传递并且像这样删除它：
/** * @Route("inflows/delete/{id}", name="delete_inflow") * @throws 异常 */ public 函数 inFlowDelete(int $id): JsonResponse {

    try {
        $repo = $this->getDoctrine()->getManager();
        $inflows = $repo->getRepository(InFlows::class)->find($id);
        if (!$inflows) {
            throw new \JsonException("There is no data to delete!");
        }
    } catch (Exception $e) {
        return new JsonResponse(["data"=>$e->getMessage()]);
    }
    $repo->remove($inflows);
    $repo->flush();

    return new JsonResponse("Success!");
}

试试看，让我知道最新消息！

Symfony 5 - 查找（元素）在删除功能（CRUD）中不起作用（？）

Symfony 5 - find(ELEMENT) doesn't work (?) in delete function (CRUD)

php

symfony