public function submitReview(Request $request){
$request->validate([
'comment'=> 'required',
'R_Image' => 'mimes:kpg,png,jpeg|max:5048'
]);
$newImageName = time() . '-' . $request->name . '.' .
$request->R_Image->extension();
$request->R_Image->move(public_path('images'), $newImageName);
$UserId=Auth::id();
$query = DB::table('review') ->insert ([
'User_Id'=> $UserId,
'P_Id'=>$request->input('productID' ),
'R_Rating'=>$request->input('R_Rating' ),
'R_Comment'=>$request->input('comment' ),
'R_Image'=>$newImageName,
"created_at" => \Carbon\Carbon::now(), # new \Datetime()
"updated_at" => \Carbon\Carbon::now(),
]);
if ($query) {
return back()-> with ('success' , 'Review has been successfully submitted');
}else{
return back() -> with ('fail' , 'Something went wrong');
}
}
}
這是我的審查代碼。用戶可以在提交表單時上傳圖片，圖片不是必需的，這是可選的。但是，當用戶不上傳影像時，我收到錯誤訊息“呼叫 null 時的成員函式 extension()”。但是，如果提交帶有影像的表單，我沒有收到錯誤。我的代碼有問題嗎？
uj5u.com熱心網友回復：
public function submitReview(Request $request){
$request->validate([
'comment'=> 'required'
]);
$newImageName = "";
if ($request->hasFile('R_Image')) {
$request->validate([
'R_Image' => 'mimes:kpg,png,jpeg|max:5048'
]);
$newImageName = time() . '-' . $request->name . '.' .
$request->R_Image->extension();
$request->R_Image->move(public_path('images'), $newImageName);
}
$UserId=Auth::id();
$query = DB::table('review') ->insert ([
'User_Id'=> $UserId,
'P_Id'=>$request->input('productID' ),
'R_Rating'=>$request->input('R_Rating' ),
'R_Comment'=>$request->input('comment' ),
'R_Image'=>$newImageName,
"created_at" => \Carbon\Carbon::now(), # new \Datetime()
"updated_at" => \Carbon\Carbon::now(),
]);
if ($query) {
return back()-> with ('success' , 'Review has been successfully submitted');
}else{
return back() -> with ('fail' , 'Something went wrong');
}
}
}
uj5u.com熱心網友回復：
'R_Image' => 'mimes: jpg,png,jpeg|max:5048' mime 型別必須為 jpg。
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