![](/img/trans.png)
[英]Laravel 7 multi parameter route error: Facade\Ignition\Exceptions\ViewException Missing required parameters for Route
[英]Facade\Ignition\Exceptions\ViewException Missing required parameters for [Route: trainingcategories.update]
可以接縫找出問題是模型沒有返回任何數據,我檢查了控制器、視圖、路由,一切似乎都沒問題。
public function edit(TrainingCategory $trainingCategory)
{
return view('admin.trainingcategories.edit')->with(['trainingcategory'=>$trainingCategory]);
}
這是我的控制器方法, $trainingCategory 不從數據庫返回所需的數據。
Route::prefix('admin')->middleware('is_admin')->group(function () {
Route::get('/dashboard', 'HomeController@adminHome')->name('admin.home');
Route::resource('positions', 'PositionsController');
Route::resource('departments', 'DepartmentsController');
Route::resource('trainings', 'TrainingsController');
Route::resource('trainingcategories', 'TrainingCategoriesController');
Route::get('/trainingcategories/{id}/{action}', 'TrainingCategoriesController@changestatus')->name('trainingcategories.status');
});
這是我的路由文件,顯示了代碼
@extends('layouts.admin')
@section('content')
<div class="app-main__inner">
<div class="app-page-title">
<div class="page-title-wrapper">
<div class="page-title-heading">
<div class="page-title-icon">
<i class="pe-7s-user icon-gradient bg-mean-fruit">
</i>
</div>
<div>Edit Training Category
<div class="page-title-subheading">Modify.
</div>
</div>
</div>
<div class="page-title-actions">
<div class="d-inline-block dropdown">
<a href="{{ route('trainingcategories.create') }}" type="button" class="btn-shadow btn btn-info">
Create New Training Category
<span class="btn-icon-wrapper pr-2 opacity-7">
</span>
</a>
<a href="{{ route('trainingcategories.index') }}" type="button" class="btn-shadow btn btn-primary">
List Training Categories
<span class="btn-icon-wrapper pr-2 opacity-7">
<i class="fa fa-arrow-right fa-w-20"></i>
</span>
</a>
</div>
</div>
</div>
</div>
<!--Data table section-->
<div class="row">
<div class="col-md-12">
<nav class="" aria-label="breadcrumb">
<ol class="breadcrumb">
<li class="breadcrumb-item"><a href="{{ route('admin.home') }}">Dashboard</a></li>
<li class="breadcrumb-item"><a href="{{ route('trainingcategories.index') }}">Training Category</a></li>
<li class="active breadcrumb-item" aria-current="page">Edit Training Category</li>
</ol>
</nav>
<!--alerts-->
@if(!empty($errors->all()) )
<div class="alert alert-danger fade show" role="alert">
@foreach ($errors->all() as $error)
<li>{{ $error }}</li>
@endforeach
</div>
@endif
<!--end alerts-->
<div class="main-card mb-3 card">
<div class="card-body"><h3 class="h4">Edit Training Category > <b>{{ $trainingcategory->name }}</b><br>
<small class="muted">Modify</small></h3>
<hr>
<form class="needs-validation" novalidate method="POST" action="{{ route('trainingcategories.update',['trainingcategory'=>$trainingcategory->id]) }}">
@csrf
@method('PUT')
<div class="department-relative form-group">
<label for="name" class="">Name</label>
<input name="name" id="name" placeholder="Enter training category" type="text" class="form-control"
value="{{ old('name',$trainingcategory->name) }}" required>
<div class="valid-feedback">
Looks good!
</div>
<div class="invalid-feedback">
Please enter training category.
</div>
</div>
<div class="department-relative form-group">
<label for="description" class="">Active<i class="muted"></i></label>
@include('includes._active_select')
</div>
<div class="department-relative form-group">
<label for="description" class="">Training Description<i class="muted">(Optional)</i></label>
<textarea name="description" id="description" class="form-control" required> {{ old('description',$trainingcategory->description) }} </textarea>
<div class="valid-feedback">
Looks good!
</div>
<div class="invalid-feedback">
Please enter training description.
</div>
</div>
<button class="mt-1 btn btn-primary">update</button>
</form>
</div>
</div>
</div>
</div>
<!-- form validation-->
<script>
// Example starter JavaScript for disabling form submissions if there are invalid fields
(function() {
'use strict';
window.addEventListener('load', function() {
// Fetch all the forms we want to apply custom Bootstrap validation styles to
var forms = document.getElementsByClassName('needs-validation');
// Loop over them and prevent submission
var validation = Array.prototype.filter.call(forms, function(form) {
form.addEventListener('submit', function(event) {
if (form.checkValidity() === false) {
event.preventDefault();
event.stopPropagation();
}
form.classList.add('was-validated');
}, false);
});
}, false);
})();
</script>
<!--end data table section-->
</div>
@endsection
這是我的觀點
伙計們,我終於通過將變量名稱 trainingCategory 更改為 $trainingcategory(注意小寫的“c”,匹配資源路由命名)來解決這個問題。因此資源從數據庫返回數據。
Laravel 自動解析在路由或控制器操作中定義的類型提示模型,其變量名稱與路由段名稱匹配。
該錯誤與 [Route: trainingcategories.update] 有關。 當你這樣做時:
Route::resource('trainingcategories','TrainingCategoriesController');
您生成此路由:trainingcategories.update,它正在 TrainingCategoriesController 的更新方法中等待 $trainingcategories 參數。
像這樣:
public function update(TrainingCategory $trainingCategory)
因此,您需要查看更新方法。 編輯方法沒有罪。
您已經證明這是您生成路線的方式:
route('trainingcategories.update',['trainingcategory'=>$trainingcategory->id])
不需要傳入關聯數組,傳入模型即可。
route('trainingcategories.update', $trainingcategory)
確保$traningcategory
確實存在並且 ID 屬性不為空。 Laravel 抱怨它沒有獲得所需的參數。
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