create() 函数不起作用且不输出错误 (Laravel)

Question

我想向数据库中插入数据，但是当我运行函数不起作用并且不输出错误时，数据没有插入到数据库中但没有显示错误？我为什么要这样做？

public function index(){
    $data_subgroup = \App\Subgroup::all();
    $data_category = \App\Module::all();
    return view('/dashboard/subgroup', ['data_subgroup' => $data_subgroup,
                                        'data_category' => $data_category,                                        
    ]);
}

public function create(Request $request){

    $this->validate($request, [
        'subgroup_logo' => 'file|image|mimes:jpeg,png,jpg|max:2048',
        'subgroup_name' => 'required',
        'module_id'     => 'required'
    ]);

    $subgroup_logo = $request->file('subgroup_logo');
        $filename ='subgroups/'  . time() . '.' . $subgroup_logo->getClientOriginalExtension(); //Memecah Filename
        Image::make($subgroup_logo)->resize(200, 200)->save( public_path('/uploads/' . $filename)); //Resize dan Save Avatar ke Database

    Subgroup::create([
        'subgroup_logo' => $filename,
        'subgroup_name' => $request->subgroup_name,
        'module_id'   => $request->module_id
    ]);
    return redirect()->back();
}

这是我的路线代码：

    Route::get('/dashboard/subgroup', 'Dashboard\SubgroupController@index');
Route::post('/dashboard/subgroup/create', 'Dashboard\SubgroupController@create');

这是我的模型代码：

class Subgroup extends Model{
protected $table = 'subgroup';
public $timestamps = false;
protected $primaryKey = 'subgroup_id';

protected $fillable = ['subgroup_id', 'subgroup_name', 'subgroup_logo', 'module_id'];

public function module(){
    return $this->belongsTo('App\Module' , 'module_id');
}

}

更新：我认为错误来自 select 选项的插入数据，

我改变了：

$this->validate($request, [
    'subgroup_logo' => 'file|image|mimes:jpeg,png,jpg|max:2048',
    'subgroup_name' => 'required',
    'module_id'     => 'required'
]);

至：

Validator::make($request->all(), [
        'subgroup_logo' => 'file|image|mimes:jpeg,png,jpg|max:2048',
        'subgroup_name' => 'required',
        'module_id'     => 'integer|required'
    ]);

我有 select 个选项视图：

<label for="category">Select Category</label>
                    <select class="form-control form-control-sm">
                        @foreach($data_category as $category)
                        <option id="module_id" name="module_id" value="{{$category->module_id}}">
                            {{$category->module_name}}</option>
                        @endforeach
                    </select>

我有错误：

SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'module_id' cannot be null (SQL: insert into subgroup (subgroup_logo, subgroup_name, module_id) values (subgroups/1570166504.png, UNSIKA, ?))

Answer 1

将名称属性设置为您的 select 输入。您在 option 标签中设置的是错误的

<select class="form-control form-control-sm" name="module_id">
                        @foreach($data_category as $category)
                        <option id="module_id" name="module_id" value="{{$category->module_id}}">
                            {{$category->module_name}}</option>
                        @endforeach
                    </select>

Answer 2

//set name and id attribute to your select input then check it.it's should 
//  be works properly.

  <label for="category">Select Category</label>
  <select class="form-control form-control-sm" name="module_id" id="module_id">
      @foreach($data_category as $category)
          <option value="{{$category->module_id}}">
              {{$category->module_name}}</option>
      @endforeach      
  </select>

create() 函数不起作用且不输出错误 (Laravel)

create() function doesn't work and does not output an error (Laravel)

php

mysql

database

crud

laravel