从画布生成数据时，CSRF令牌错误

Question

我正在使用名为laravel-admin的程序包。

我使用流行的SignaturePad包创建了一个自定义签名字段，数据已成功转换为图像。但是，当我尝试提交表单时，出现错误，提示CSRF令牌未命中。

这是我的渲染SignaturePad类的代码：

public function render()
{
    $this->script = <<<EOT
    var canvas = document.getElementById('signature-pad');

    // Adjust canvas coordinate space taking into account pixel ratio,
    // to make it look crisp on mobile devices.
    // This also causes canvas to be cleared.
    function resizeCanvas() {
        // When zoomed out to less than 100%, for some very strange reason,
        // some browsers report devicePixelRatio as less than 1
        // and only part of the canvas is cleared then.
        var ratio = Math.max(window.devicePixelRatio || 1, 1);
        canvas.width = canvas.offsetWidth * ratio;
        canvas.height = canvas.offsetHeight * ratio;
        canvas.getContext("2d").scale(ratio, ratio);
    }

    window.onresize = resizeCanvas;
    resizeCanvas();

    var signaturePad = new SignaturePad(canvas, {
        backgroundColor: 'rgb(255, 255, 255)' // necessary for saving image as JPEG; can be removed is only saving as PNG or SVG
    });

    $('button[type="submit"]').click(function() {
        console.log(signaturePad.toDataURL());
        $('input[type=hidden]').val(signaturePad.toDataURL());
    });

    EOT;
    return parent::render();
}

如果我删除下面的行，那么我不会得到它，但是显然我的数据没有发送。它的工作方式是我转换图像的值并将其放入要发送的隐藏输入字段中。谁能帮忙？

$('button[type="submit"]').click(function() {
    console.log(signaturePad.toDataURL());
    $('input[type=hidden]').val(signaturePad.toDataURL());
});

Answer 1

显然，我忘记了laravel提供了包含CSRF令牌的隐藏输入，我正在与jQuery代码一起更改所有这些

$('button[type="submit"]').click(function() {
    console.log(signaturePad.toDataURL());
    $('input[type=hidden]').val(signaturePad.toDataURL());
});

谢谢大家