如何在表单内使用 FormHelper::postLink()?

问题描述

我想在表单中创建一个 Cakephp 删除帖子链接，如下所示.但是当我在浏览器中检查时，第一个删除帖子按钮不包括删除表单并且无法删除，但其他按钮包括我想要的并且可以删除.

I want to create a Cakephp delete post link within form like the following. But the very first delete post button doesn't include delete Form when I inspect in browser and can't delete but the others include as I want and can delete.

是 cakephp 错误还是我需要更改源代码?

Is it cakephp bug or something I need to change my source code?

<?php
echo $this->Form->create('Attendance', array('required' => false, 'novalidate' => true));

foreach($i = 0; $i < 10; i++):
    echo $this->Form->input('someinput1', value => 'fromdb');
    echo $this->Form->input('someinput2', value => 'fromdb');
    echo $this->Form->postLink('Delete',array('action'=>'delete',$attendanceid),array('class' => 'btn btn-dark btn-sm col-md-4','confirm' => __('Are you sure you want to delete')));
endforeach;

echo $this->Form->button('Submit', array('class' => 'btn btn-success pull-right'));
echo $this->Form->end();
?>

推荐答案

表单不能嵌套，HTML 标准根据定义禁止嵌套.如果您尝试这样做，大多数浏览器将删除嵌套表单并将其内容呈现在父表单之外.

Forms cannot be nested, the HTML standard forbids that by definition. If you try to, most browsers will drop the nested form and render its contents outside of the parent form.

如果您需要在现有表单中发布链接，那么您必须使用 inline 或 block 选项(从 CakePHP 2.5 开始可用，inline> 已在 CakePHP 3.x 中删除)，以便将新表单设置为可以在主表单之外呈现的视图块.

If you need post links inside of existing forms, then you must use the inline or block options (available as of CakePHP 2.5, inline has been removed in CakePHP 3.x), so that the new form is being set to a view block that can be rendered outside of the main form.

CakePHP 2.x

echo $this->Form->postLink(
    'Delete',
    array(
        'action' => 'delete',
        $attendanceid
    ),
    array(
        'inline' => false, // there you go, disable inline rendering
        'class' => 'btn btn-dark btn-sm col-md-4',
        'confirm' => __('Are you sure you want to delete')
    )
);

CakePHP 3.x

echo $this->Form->postLink(
    'Delete',
    [
        'action' => 'delete',
        $attendanceid
    ],
    [
        'block' => true, // disable inline form creation
        'class' => 'btn btn-dark btn-sm col-md-4',
        'confirm' => __('Are you sure you want to delete')
    ]
);

关闭主表单并输出帖子链接表单

// ...

echo $this->Form->end();

// ...

echo $this->fetch('postLink'); // output the post link form(s) outside of the main form

另见

CakePHP 2.x

• API > FormHelper::postLink()
• 食谱 > 视图 > 使用视图块

CakePHP 3.x

• API > CakeViewHelperFormHelper::postLink()
• Cookbook > Views > Helpers > Form > 创建独立按钮和 POST 链接
• 食谱 > 视图 > 使用视图块

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