本文介绍了致命错误:未捕获的ArgumentCountError:函数Admincategory :: deletecategory()的参数太少，的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我知道有一些与此相关的问题，但是有c ++或其他语言.我收到此错误，我不确定我的功能出了什么问题.这是我的错误
I know there were some questions related to this, but there are c ++ or other languages. I get this error and I'm not sure what's wrong with my function.This is my Error
我的功能是:
<?php
class Admincategory extends Controller
{
function __construct()
{
parent::__construct();
}
function index()
{
$category = $this->model->getChildren(0);
$data = ['category' => $category];
$this->view('admin/category/index', $data);
}
function showchildren($idcategory)
{
$categoryInfo = $this->model->categoryInfo($idcategory);
$children = $this->model->getChildren($idcategory);
$parents = $this->model->getParents($idcategory);
$data = ['categoryInfo' => $categoryInfo, 'category' => $children, 'parents' => $parents];
$this->view('admin/category/index', $data);
}
function addcategory($categoryId = 0, $edit = '')
{
if (isset($_POST['title'])) {
$title = $_POST['title'];
$parent = $_POST['parent'];
$this->model->addCategory($title, $parent, $edit, $categoryId);
}
$category = $this->model->getCategory();
$categoryInfo = $this->model->categoryInfo($categoryId);
$data = ['category' => $category, 'parentId' => $categoryId, 'edit' => $edit, 'categoryInfo' => $categoryInfo];
$this->view('admin/category/addcategory', $data);
}
function deletecategory($parentId)
{
$ids = $_POST['id'];
$this->model->deletecategory($ids);
header('location:'.URL.'admincategory/showchildren/'.$parentId);
}
}
?>
app.php文件
app.php file
<?php
class App
{
public $controller = 'index';
public $method = 'index';
public $params = [];
function __construct()
{
if (isset($_GET['url'])){
$url = $_GET['url'];
$url = $this->parseUrl($url);
$this->controller = $url[0];
unset($url[0]);
if (isset($url[1])){
$this->method = $url[1];
unset($url[1]);
}
$this->params = array_values($url);
}
$controllerUrl = 'controllers/' . $this->controller . '.php';
if (file_exists($controllerUrl)) {
require($controllerUrl);
$object = new $this->controller;
$object->model($this->controller);
if (method_exists($object, $this->method)) {
call_user_func_array([$object, $this->method], $this->params);
}
}
}
function parseUrl($url)
{
$url = filter_var($url, FILTER_SANITIZE_URL);
$url=rtrim($url,'/');
$url = explode('/', $url);
return $url;
}
}
?>
和index.php
and index.php
<?php
require('views/admin/layout.php');
$category = $data['category'];
$categoryInfo = [];
if (isset($data['categoryInfo'])) {
$categoryInfo = $data['categoryInfo'];
}
$parents = [];
if (isset($data['parents'])) {
$parents = $data['parents'];
$parents = array_reverse($parents);
}
?>
<style>
.w400 {
width: 600px;
}
</style>
<div class="left">
<p class="title">
مدیریت دسته ها
(
<?php foreach ($parents as $row) { ?>
<a href="admincategory/showchildren/<?= $row['id']; ?>">
<?= $row['title']; ?>
</a>
-
<?php } ?>
<a href="admincategory/<?php if (isset($categoryInfo['id'])) {
echo 'showchildren/' . $categoryInfo['id'];
} else {
echo 'index';
} ?>">
<?php
if (isset($categoryInfo['title'])) {
echo $categoryInfo['title'];
} else {
echo 'دسته های اصلی';
}
?>
</a>
)
</p>
<a class="btn_green_small" href="admincategory/addcategory/<?= @$categoryInfo['id']; ?>">
افزودن
</a>
<a class="btn_red_small" onclick="submitForm();">
حذف
</a>
<form action="admincategory/deletecategory/<?= @$categoryInfo['id']; ?>" method="post">
<table class="list" cellspacing="0">
<tr>
<td>
ردیف
</td>
<td>
عنوان دسته
</td>
<td>
مشاهده زیر دسته ها
</td>
<td>
ویرایش
</td>
<td>
انتخاب
</td>
</tr>
<?php
foreach ($category as $row) {
?>
<tr>
<td>
<?= $row['id']; ?>
</td>
<td class="w400">
<?= $row['title']; ?>
</td>
<td>
<a href="admincategory/showchildren/<?= $row['id']; ?>">
<img src="public/images/view_icon.png" class="view">
</a>
</td>
<td>
<a href="admincategory/addcategory/<?= $row['id']; ?>/edit">
<img src="public/images/edit_icon.ico" class="view">
</a>
</td>
<td>
<input type="checkbox" name="id[]" value="<?= $row['id']; ?>">
</td>
</tr>
<?php } ?>
</table>
</form>
</div>
</div>
============
============
谢谢您的帮助！
推荐答案
有时，调用AdminCategory :: deletecategory($ parentId)时没有参数，但是原型没有默认值，因此会引发异常.由于您是从发布请求中获取数据的，并且类别很可能没有父项，因此您可以将您的方法重构为以下形式:
Sometimes it happen that AdminCategory::deletecategory($parentId) is called without a parameter but prototype do not have a default value for it and therefore exception is thrown. Since you get data from a post request and there is always a possibility that a category do not have a parent you can refactor your method to looks like:
function deletecategory($parentId = null)
{
$ids = $_POST['id'];
$this->model->deletecategory($ids);
if (null !== $parentId) {
header('location:'.URL.'admincategory/showchildren/'.$parentId);
}
// PUT MORE OF YOUR LOGIC HERE, I DO NOT KNOW WHAT SHOULD HAPPEN
}
如果您使用键入提示，则更合适的方法是使方法看起来像
If you are using typing hints more appropriate would be to make method looks like
function deletecategory(string $parentId = ''): void //void is for php7.1
{
$ids = $_POST['id'];
$this->model->deletecategory($ids);
if ('' !== $parentId) {
header('location:'.URL.'admincategory/showchildren/'.$parentId);
}
// AGAIN LOGIC HERE
}
如果您真的希望必须传递parentId，那么请使用try catch包装方法调用方
If you REALLY expect that parentId MUST be passed then instead wrap method caller with try catch
if (method_exists($object, $this->method)) {
try {
call_user_func_array([$object, $this->method], $this->params);
} catch (\Exception $ex) {
// HANDLE EXCEPTION HERE
}
}
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