Question

您想帮我吗？我想输入多个值并存储在具有不同行的数据库中。例如：

在输入表单中，

|project_id    milestone_id|
|    1          1,2,3      |
|    2           2,4       |

我在数据库中的预期结果

|project_id    milestone_id|
|    1              1      |
|    1              2      |
|    1              3      |
|    2              2      |
|    2              4      |

这是我的观点（tasktable \ projectmiles.blade.php）

<form action="{{route('project-miles.store')}}" method="post">
  <label for="project" class="control-label mb-1">Project</label>
  <div class="input-group col-lg-12">
    <select name="project_id" id="project_id" class="form-control">
      <option value="">Please Select</option>
      @foreach ($projects as $item)
        <option value="{{$item->id}}">{{$item->value}} - {{$item->description}}</option>
      @endforeach
    </select>
  </div>
  <label for="milestone" class="control-label mb-1">Milestone</label>
  <div class="input-group col-lg-12">
    <select multiple="multiple" name="milestone_id" id="milestone_id" class="form-control">
      <option value="">Please Select</option>
      @foreach ($milestones as $item)
        <option value="{{$item->id}}">{{$item->value}} - {{$item->description}}</option>
      @endforeach
    </select>
  </div>
  <button type="submit" class="btn btn-lg btn-info btn-block"></button>
</form>

这是我的控制器（ProjectMilestoneController.php），我从2个模型（Milestone和Project）中获取价值

class ProjectMilestoneController extends Controller
{
  public function index()
  {
    $projects = Project::get();
    $milestones = Milestone::get();
    return view('takstable.projectmiles',['projects'=>$projects, 'milestones'=>$milestones]);   
  }      

  public function store(Request $request)
  {
    ProjectMilestone::create($request->all());
    return redirect()->route('project-miles.index');
  }
}

这是我的模型（ProjectMilestone.php）

class ProjectMilestone extends Model
{
  protected $fillable = ['project_id','milestone_id'];
  public function project()
  {
    return $this->belongsTo(Project::class,'project_id','id');
  }

  public function milestone()
  {
    return $this->belongsTo(Milestone::class,'milestone_id','id');
  }
}

谢谢您

Answer 1

实现这一目标的Eloquent方法是

public function store(Request $request)
{

    foreach($request->milestone_id as $milestone_id) {

        ProjectMilestone::create([
            'project_id'   => $request->project_id,
            'milestone_id' => $milestone_id
        ]);
    }

    return redirect()->route('project-miles.index');
}

但这会影响系统的效率，因为如果选择了n个里程碑，那么将有n个查询到数据库。

为了避免此问题。

public function store(Request $request)
{

    $prject_milestone = collect();

    foreach($request->milestone_id as $milestone_id) {

        $project_milestones->push(
            ProjectMilestone::make([
                'project_id'   => $request->project_id,
                'milestone_id' => $miletone_id
            ])
        );
    }

    DB::table('project_milestones')->insert($project_milestones);

    return redirect()->route('project-miles.index');
}

这只会对数据库执行一个查询。

由您选择

Answer 2

您还必须在视图上创建数组。例如：

socket.read(integer)

请参阅@tharakaDilshan对于控制器的回答。

Laravel在不同的行中存储多个值

2 个答案: