user(); $balance = $user->balance; return view('transfer.search', compact('balance')); } public function transfer(Request $request) { $request->validate([ 'amount' => 'numeric|min:1|max:100', 'description' => 'nullable|string|max:100', ]); $to = User::where('email', $request->to)->first(); if (!$to) { return back()->withErrors(['to' => '找不到用户。']); } $user = $request->user(); if ($request->to == $user->email) { return back()->withErrors(['to' => '不能转给自己。']); } $transaction = new Transaction(); if ($user->balance < $request->amount) { return back()->withErrors(['amount' => '您的余额不足。']); } else { $transaction->transfer($user, $to, $request->amount, $request->description); } return back()->with('success', '转账成功,已达对方账户。'); } }