使用FineUploader上传带索引的多个文件

时间:2016-10-27 10:13:34

标签: javascript php mysql laravel fine-uploader

我正在为我的图片上传功能使用FineUploader插件,而且在启用multiple选项时,我无法找到跟踪文件索引的方法。

我在处理图像上传时在服务器端做的是,我会查询数据库中的现有图像,获取计数,并保存新上传图像的链接,索引等于existing_count+1数据库。

这应该允许我记录所有上传的图像,并将其上传顺序作为索引。

但是,启用multiple选项后,当上传者访问后续文件的服务器端点时,数据库查询似乎不会从上次保存图像更新。

这是竞争条件吗?有没有办法将文件索引传递给服务器?

以下是我的代码:

服务器端(Laravel)

public function save_listing_picture() {
     if (Input::hasFile('listing')) {
        $user = Auth::user();
        $id = $user->id;
        $existing_count = Image::where('user_id', $id)->count(); //this doesn't update on a multiple upload request

        $file = Input::file('listing');
        $imagePath = '/images/'+$id+'/image_'+$existing_count+1+'.jpg';
        $img = Image::make($file)->encode('jpg', 75);
        $img->save($imagePath);

        $imgRecord = new Image();
        $imgRecord->link = $imagePath;
        $imgRecord->save();
    }
}

前端(JS):

var listingUploader = new qq.FineUploader({
        element: document.getElementById("image-uploader"),
        template: 'qq-template',
        debug: true,
        request: {
            endpoint: '/account/save-image',
            params: {'_token': csrf_token},
            inputName: 'listing'
        },
        thumbnails: {
            placeholders: {
                waitingPath: '/img/fine-uploader/waiting-generic.png',
                notAvailablePath: '/img/fine-uploader/not_available-generic.png'
            }
        },
        image: {
            minHeight: 300,
            minWidth: 300
        },
        validation: {
            allowedExtensions: ['jpeg', 'jpg', 'gif', 'png'],
            itemLimit: 3
        }
    });

1 个答案:

答案 0 :(得分:1)

我最终使用UUID来跟踪上传的每个文件,以避免重复和错误覆盖(感谢@RayNicholus提供的建议)。

这是我的解决方案:

服务器端

public function save_listing_picture(Request $request) {
    if (Input::hasFile('listing')) {
        $user = Auth::user();
        $id = $user->id;

        $file = Input::file('listing');

        $fileId = $request->get('qquuid');
        $destination_path = 'images/' . $id . '/';
        if (!is_dir($destination_path)) {
            mkdir($destination_path, 0777, true);
        }
        $full_path = $destination_path . $fileId . ".jpg";
        $img = Image::make($file)->encode('jpg', 75);
        $img->save(public_path() . '/' . $full_path);

        $imgRecord = new Image();
        $imgRecord->link = $full_path;
        $imgRecord->save();


        return response()->json(['success' => true]);
    }

    return response()->json(['status' => 'Input not found']);
}

前端:

var userId = {{Auth::user()->id}}; //laravel blade
var listingUploader = new qq.FineUploader({
    element: document.getElementById("image-uploader"),
    template: 'qq-template',
    debug: true,
    request: {
        endpoint: '/account/save-image',
        params: {'_token': csrf_token},
        inputName: 'listing'
    },
    thumbnails: {
        placeholders: {
            waitingPath: '/img/fine-uploader/waiting-generic.png',
            notAvailablePath: '/img/fine-uploader/not_available-generic.png'
        }
    },
    image: {
        minHeight: 300,
        minWidth: 300
    },
    validation: {
        allowedExtensions: ['jpeg', 'jpg', 'gif', 'png'],
        itemLimit: 3
    },
    callbacks: {
            onAllComplete: function(succeeded, failed) {
                if (succeeded.length > 0) {
                    succeeded.forEach(function(fileId, index) {
                    var imageId = "image" + index;
                    document.getElementById(imageId).src='images/' + userId + '/' + listingUploader.getUuid(fileId)+".jpg";
                    });
                }
            }
        }
});