if (isset($article) && isset($article->id))
<option value="0" {{ ($article->published == 0) ? 'selected' : '' }}>Publish</option>
<option value="1" {{ ($article->published == 1) ? 'selected' : '' }}>No publish</option>
@else
<option value="0" selected disabled>No publish</option>
<option value="1" disabled>Publish</option>
@endif
<img src="{{URL::to('/images').'/'.$article->image_path}}" alt="">
<input type="file" name="image_path" />
function upload(Request $request){
$image = $request->file('image_path');
$new_name = rand() . '.' . $image->getClientOriginalExtension();
$image->move(public_path('images'), $new_name);
return $new_name;
}
public function update(Request $request, Article $article)
{
$article->update($request->except('slug'));
$article->categories()->detach();
if($request->input('categories')) :
$article->categories()->attach($request->input('categories'));
endif;
return redirect()->route('admin.article.index');
}
当我进入编辑页面并且有一张图片时,我需要记住它,否则即使在输入时我也没有编辑任何东西,但进入数据库时,该数据库仍然为空。
当我创建新帖子并保存新图片时,一切都很好,但是在编辑时,我需要记住已经存在的内容,如果不做任何更改,则将其保存到数据库中,除非上载其他内容
答案 0 :(得分:1)
尝试一下:
public function update(Request $request, Article $article)
{
$article->update($request->except('slug', 'image_path'));
if ($request->hasFile('image_path')) {
// Add your file upload logic here
$image = $request->file('image_path');
$new_name = rand() . '.' . $image->getClientOriginalExtension();
$image->move(public_path('images'), $new_name);
$article->image_path = $new_name;
$article->save();
}
$article->categories()->detach();
if ($request->has('categories')) {
$article->categories()->attach($request->input('categories'));
}
return redirect()->route('admin.article.index');
}
您还可以阅读有关文件上传的更多信息,以增强代码:https://laravel.com/docs/6.x/requests#files
答案 1 :(得分:0)
首先,您需要在数据库中检查或匹配文件是否存在:
我认为您有更新的垂直记录。表示单条记录。 “ image_path”是指图像的名称吗?
If( $article->image_field_name == $request->input('image_path'){
//Your update logic here.
}