hainan/app/AdminGuide/Controllers/WithdrawalBankController.php

<?php

namespace App\AdminGuide\Controllers;

use App\AdminGuide\Repositories\WithdrawalBank;
use App\Models\Agent;
use App\Models\Withdrawal;
use App\Traits\DemandTraits;
use App\Traits\WithdrawalTraits;
use Dcat\Admin\Admin;
use Dcat\Admin\Form;
use Dcat\Admin\Grid;
use Dcat\Admin\Show;
use Dcat\Admin\Http\Controllers\AdminController;
use Illuminate\Database\Eloquent\Model;

class WithdrawalBankController extends AdminController
{

    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        return Form::make(new WithdrawalBank(), function (Form $form) {
			$form->display('id');
			$form->decimal('price','提现金额')->required()->maxLength(50);
			$form->text('name')->required()->maxLength(50);
			$form->text('card_number')->required()->maxLength(50)->type('number');
			$form->text('account_name')->required()->maxLength(50);
			$form->text('branch')->required()->maxLength(100);
			$form->hidden('withdrawal_id');

			$form->saving(function (Form $form) {
				$user = Agent::query()->where('id', Admin::user()->id)->lockForUpdate()->first();
				if ($form->price > $user->balance) {
					return $form->response()->error('余额不足,当前可用余额为'.$user->balance);
				}

				$user->balance = bcsub($user->balance,$form->price,6);
				$user->save();

				$withdrawal = new Withdrawal();
				$withdrawal->user_id = Admin::user()->id;
				$withdrawal->user_type = DemandTraits::$col[2];
				$withdrawal->price = request('price',0);
				//$withdrawal->pay_id = $form->getKey();
				$withdrawal->pay_type = WithdrawalTraits::$userType[1];
				$withdrawal->save();

				$form->withdrawal_id = $withdrawal->id;
				$form->deleteInput('price');
			});

			$form->saved(function (Form $form) {
				$withdrawal = Withdrawal::find($form->withdrawal_id);
				$withdrawal->pay_id = $form->getKey();
				$withdrawal->save();
			});
        });
    }
}