Question

我有一个需要显示金额的页面（admin.blade.php）。页面中有一个按钮（'更改'），它调用一个输入的模态。此模式存在于表单内部，其操作称为“更改目标”路径，后者又从控制器获取changeGoal函数。

我的admin.blade.php包含表单，模式，如下：

<a   class="btn btn-primary" data-toggle="modal" data-target="#moneyModal">
<span class="glyphicon glyphicon-money glyphicon-white"></span>change</a>  

<div class="modal fade" id="moneyModal" role="dialog">
        <div class="modal-dialog">

        <form method="post" action="change-goal">
            {{csrf_field()}}
            <div class="modal-content">
                <div class="modal-header">
                    <button type="button" class="close" data-dismiss="modal">&times;</button>
                    <h4 class="modal-title">Change Goal</h4>
                </div>
                <div class="modal-body">
                    <p>Please enter a new goal.</p>
                </div>
                <div class="modal-body">
                    <input class="form-control" name="newGoal" id="newGoal">
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                    <button id="save" type="submit" class="btn btn-primary">Save</button>
                </div>
            </div>
        </form>
        </div>
    </div>

我的控制器如下：

public function changeGoal(Request $data) {
        $newGoal =DB::table('user')->whereColumn('goal')->get();
        $newGoal->updateGoal($data->goal);
        return view('admin',compact('newGoal'));
    }

我的用户模型是：

use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;
class User extends Authenticatable
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password', 'goal'
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

public function updateGoal($goal){
        $this->goal = $goal;

        $this->save();
    }

我想在admin.blade.php页面上显示newGoal的值。目前我编写了{{$ newGoal}}，但它给出了一个错误，说明未定义的变量：newGoal。

我猜这个问题在控制器内。

我如何能够保存在该模态/表单中输入的值我每次访问该页面时都能看到它。

此外，这是表格，如果需要：

class CreateUsersTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('users', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->string('email');
            $table->string('password');
            $table->integer('goal')->default(10000);
            $table->rememberToken();
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('users');
    }
}

真的很感激帮助。

编辑：我的adminmanagement.blade.php（以前称为admin.blade.php）是：

<p>Total Donations: <br> ${{ $price }}</p>
                <p>Our Goal: {{ $newGoal }}</p>

<a   class="btn btn-primary" data-toggle="modal" data-target="#moneyModal">
<span class="glyphicon glyphicon-money glyphicon-white"></span>change</a>
  <div class="modal fade" id="moneyModal" role="dialog">
        <div class="modal-dialog">

        <form method="post" action="change-goal">
            {{csrf_field()}}
            <div class="modal-content">
                <div class="modal-header">
                    <button type="button" class="close" data-dismiss="modal">&times;</button>
                    <h4 class="modal-title">Change Goal</h4>
                </div>
                <div class="modal-body">
                    <p>Please enter a new goal.</p>
                </div>
                <div class="modal-body">
                    <input class="form-control" name="newGoal" id="newGoal">
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                    <button id="save" type="submit" class="btn btn-primary">Save</button>
                </div>
            </div>
        </form>
        </div>
    </div>

web.php有：

Route::group(['middleware' => 'auth'], function () {
    Route::get('/home', 'PagesController@getAllVideos')->name('/home');
 Route::post('change-goal','PagesController@changeGoal')->name('change-goal');

控制器：

 public function getAllVideos(){
        $videos = Video::all();
            $price = DB::table('donor')->sum('amount_donated');
        return view('adminmanagement',compact(['videos','price']));
    }

public function changeGoal(Request $data){

        $newGoal = $data->input('newGoal');

        auth()->user()->update([
            'goal' => $newGoal
        ]);

        return view('adminmanagement', compact('newGoal'));
    }

用户模型：

class User extends Authenticatable
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password', 'goal'
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

    public function updateGoal($goal){
        $this->goal = $goal;

        $this->save();
        return $this;
    }

}

Answer 1

根据您的评论和代码，您的输入字段为newGoal而非goal。您的用户提取查询错误，whereColumn条件缺少该值。你使一个简单的操作变得复杂。

根据您的意见，您需要做的就是更新登录用户（admin）的目标并返回新的目标值。这样做

public function changeGoal(Request $request)
{
    $newGoal = $request->input('newGoal');

    auth()->user()->update([
        'goal' => $newGoal
    ]);

    return view('admin', compact('newGoal'));
}

修改：根据您的评论。你应该这样做以保持简单。

public function getAllVideos()
{
    $videos = Video::all();
    $price = DB::table('donor')->sum('amount_donated');
    $goal = auth()->user()->goal;

    return view('adminmanagement', compact('videos', 'price', 'goal'));
}

public function changeGoal(Request $data)
{
    auth()->user()->update([
        'goal' => $data->input('newGoal')
    ]);

    return redirect('/home');
}

在您的视图中将$newGoal更改为$goal。

<p>Total Donations: <br> ${{ $price }}</p>
<p>Our Goal: {{ $goal }}</p>

Answer 2

内部模型

public function updateGoal($goal){
        $this->goal = $goal;

        $this->save();
        return $this;
    }

并在您的控制器内

public function changeGoal(Request $data) {
        $oldGoal =DB::table('user')->whereColumn('goal')->get();
        $newGoal = $oldGoal->updateGoal($data->goal);
        return view('admin',compact('newGoal'));
    }

Laravel：保存，编辑表格中的值; undefined变量：newGoal错误

2 个答案: