cropper.js上传带有坐标的原始图像 [英] cropper.js uploading the original images with coordinates

问题描述

我正在使用cropper.js.我想上传原始图像，但裁剪后的坐标(x，y，width，height)不是裁剪后的图像.首选的方法是什么?

I am using cropper.js. I would like to upload the original image and the cropped coordinates(x,y,width,height) not the cropped image. What is the preferred way to do that?

谢谢.

推荐答案

对于此问题的客户端，这是我用来打包作物箱数据并将其运送到服务器的代码.参见esp:

For the client side of this question, here is code I use to package up the crop box data and ship it off to the server. See esp:

formData.append('last_crop', JSON.stringify($imageBox.cropper('getCropBoxData')));

$('#crop_button').click(function(){
    // Upload cropped image to server if the browser supports `HTMLCanvasElement.toBlob`.
    // Store crop coordinates to db for future visit.
    var canvas = $imageBox.cropper('getCroppedCanvas');
    canvas.toBlob(function (blob) {
        var formData = new FormData();
        formData.append('croppedImage', blob);  // 'croppedImage' is the sent filename
        formData.append('last_crop', JSON.stringify($imageBox.cropper('getCropBoxData')));

        $.ajax('{% url 'profile_crop_avatar' %}', {
            method: "POST",
            data: formData,
            processData: false,
            contentType: false,
            success: function () {
                console.log('Upload success');
            },
            error: function () {
                console.log('Upload error');
            }
        });
    }, "image/jpeg", 0.75);

    // Also update masthead image after crop
    $('#masthead-avatar').attr('src', canvas.toDataURL());
});

在服务器端(Django)，我处理并存储以下坐标:

On the server side (Django) I handle and store the coords with:

# Save new image and crop coords to profile
p = request.user
p.last_crop_coords = request.POST.get('last_crop')
p.save()

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