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我正在創建一個論壇，如果用戶點擊一個主題，他會被重定向到所有主題屬於該主題的頁面。我想要做的是，用戶可以點擊該主題並將其重定向到該主題。Laravel 5.2未定義的可變主題
的問題是，是，我得到一個錯誤說Undefined variable: theme
正如你可以在下面的代碼中看到的，我有我的theme.blade.php foreach循環，其循環屬於主題的所有主題的他/她點擊。在循環的開始處有一個<a href="{{ route('showtopic', ['theme_id' => $theme->id, 'topic_id' => $topic->id]) }}"1，它應該讓用戶看到他/她點擊的主題。應該顯示的URL是forum.dev/theme/{theme_id}/topics/{topic_id}但這不起作用。 它給了我那個錯誤代碼。所有的代碼如下，如果我錯過了一些代碼，請告訴我有關它，我會更新問題。由於事先
theme.blade.php
<div class="col s12">
<div class="card">
<div class="card-content"><span class="card-title"> - Topics</span>
<div class="collection">
@foreach($topics as $topic)
<a href="{{ route('showtopic', ['theme_id' => $theme->id, 'topic_id' => $topic->id]) }}" class="collection-item avatar collection-link"><img src="/uploads/avatars/{{ $topic->user->avatar }}" alt="" class="circle">
<div class="row">
<div class="col s6">
<div class="row last-row">
<div class="col s12"><span class="title">Theme - {{ $topic->topic_title }}</span>
<p>{!! str_limit($topic->topic_text, $limit = 125, $end = '...') !!}</p>
</div>
</div>
<div class="row last-row">
<div class="col s12 post-timestamp">Posted by: {{ $topic->user->username }} op: {{ $topic->created_at }}</div>
</div>
</div>
<div class="col s2">
<h6 class="title center-align">Replies</h6>
<p class="center replies">{{ $topic->replies->count() }}</p>
</div>
<div class="col s2">
<h6 class="title center-align">Status</h6>
<div class="status-wrapper center-align"><span class="status-badge status-open">open</span></div>
</div>
<div class="col s2">
<h6 class="title center-align">Last reply</h6>
<p class="center-align"></p>
<p class="center-align">Tijd</p>
</div>
</div>
</a>
@endforeach
</div>
</div>
</div>
</div>
Web.php
Route::get('/', '[email protected]')->name('home');
Route::get('/theme/{theme_id}/topics', '[email protected]')->name('showtheme');
Route::get('/theme/{theme_id}/topics/{topic_id}', '[email protected]')->name('showtopic');
Route::group(['middleware' => 'App\Http\Middleware\AdminMiddleware'], function() {
//THEMES
Route::get('/theme/{theme_id}/edit', '[email protected]')->name('edittheme');
Route::patch('/theme/{theme_id}/edit', '[email protected]')->name('updatetheme');
Route::get('/theme/create', '[email protected]')->name('createtheme');
Route::post('/theme/create', '[email protected]')->name('savetheme');
Route::delete('/theme/{theme_id}/delete', '[email protected]')->name('deletetheme');
//TOPICS
Route::get('/theme/{theme_id}/topics/{topic_id}/edit', '[email protected]')->name('edittopic');
Route::patch('/theme/{theme_id}/topics/{topic_id}/edit', '[email protected]')->name('updatetopic');
Route::get('/theme/{theme_id}/topics/create', '[email protected]')->name('createtopic');
Route::post('/theme/{theme_id}/topics/create', '[email protected]')->name('savetopic');
Route::delete('/theme/{theme_id}/topics/{topic_id}/delete', '[email protected]')->name('deletetopic');
});
Route::get('user/profile', '[email protected]')->name('showprofile');
Route::post('user/profile', '[email protected]_avatar');
TopicsController.php（顯示方法）
public function show($id)
{
$theme = Theme::find($id);
$topics = Topic::find($id);
return view('topics/topic')->with('topics', $topics)->with('theme', $theme);
}