如何以json格式更新和删除(取消链接)多个旧图像 [英] how to update and remove (unlink) multiple old images in json format

问题描述

这仍然与我在这里的帖子有关如何删除和取消链接json格式的多张图片

this is still related to my post in here How to remove and unlink multiple images in json format

我可以存储和删除所有多个图像.但是更新和删除旧图像时我仍然有问题.我的代码在更新新图像时仍然不能删除oldimage.

i can store and delete all multiple images. but i have still problem when update and remove old image. my code still not remove the oldimage when update the new image.

我的更新控制器，我使用handlerequest方法存储图像，其中oldImage是数据库中的变量，它将与新图像进行比较.如果不一致，则删除旧图像.

my update controller, i use handlerequest method to store images, where oldImage is variable in database that will be compared with new images. if not same then remove old images.

public function update(Requests\UpdatePostRequest $request, $id)
{

    $post = Post::findOrFail($id);
    $oldImage = $post->image;
    $data = $this->handleRequest($request);
    $post->update($data);


    if($oldImage != $post->image)
    {
        foreach (json_decode($post->image, true) as $oldImage) {
        $this->removeImage($oldImage);
        }
    }

    if($request->submitbutton =='Publish')
    {
        Alert::success('Your post was updated successfully')->persistent('Close');
        return redirect(route('admins-blogpost.index'));
    }
    if($request->submitbutton =='Save Draft')
    {
        Alert::success('Your draft was updated successfully')->persistent('Close');
        return redirect(route('admins-blogpost.index'));
    }
}

我的handlerequest方法用于存储多个图像，该方法正在使用store方法.所以这个问题不在这里.

my handlerequest method to store multiple image, this method is working using store method. so this problem not here.

private function handleRequest($request)
{
    $data = $request->all();

    if($request->hasFile('image'))
    {
        $images = $request->file('image');
        foreach($images as $key=>$image){
            $fileName    = $image->getClientOriginalName();

            $destination = $this->uploadPath;

            $successUploaded = $image->move($destination, $fileName);
            if($successUploaded)
            {
                $width = config('cms_blog.image.thumbnail.width');
                $height = config('cms_blog.image.thumbnail.height');
                $extension = $image->getClientOriginalExtension();
                $thumbnail = str_replace(".{$extension}", "_thumb.{$extension}", $fileName);
                Image::make($destination . '/' . $fileName)
                        ->resize($width,$height)
                        ->save($destination . '/' . $thumbnail);
                $datax[] = $fileName;
            }
            $data['image'] = json_encode($datax);
        }

    }
    return $data;
}

和删除方法

public function removeImage($image)
{
    if( ! empty($image))
    {
        $imagePath = $this->uploadPath . '/' . $image;
        $ext = substr(strrchr($image, '.'), 1);
        $thumbnail = str_replace(".{$ext}", "_thumb.{$ext}", $image);
        $thumbnailPath = $this->uploadPath . '/' . $thumbnail;
        if(file_exists($imagePath) ) unlink($imagePath);
        if(file_exists($thumbnailPath) ) unlink($thumbnailPath);
    }
}

如何解决我的问题，以便在旧图像与新图像不相同时删除旧图像?

how to fix my problem so i can remove old images when their not same with new image?

推荐答案

在您删除图像的for循环中，我相信您想遍历$oldImage而不是遍历$post->image:

In the for loop where you delete the images, I believe you wanted to iterate over $oldImage, not over $post->image:

foreach (json_decode($oldImage, true) as $item) {
    $this->removeImage($item);
}

这篇关于如何以json格式更新和删除(取消链接)多个旧图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！