Laravel 5.2缺少所需參數[路線：showtopic] [URI：主題/ {ID} /主題/ {ID}]

Question

我不斷收到以下錯誤：

Missing required parameters for [Route: showtopic] [URI: theme/{id}/topics/{id}].

這是我的網站.PHP的樣子：在web.php

有關的一切話題

Route::get('/theme/{id}/topics/{id}', 'TopicsController@show')->name('showtopic'); 

Route::get('/theme/{id}/topics/{id}/edit', 'TopicsController@edit')->name('edittopic'); 
Route::patch('/theme/{id}/topics/{id}/edit', 'TopicsController@update')->name('updatetopic'); 

Route::get('/theme/{id}/topics/create', 'TopicsController@create')->name('createtopic'); 
Route::post('/theme/{id}/topics/create', 'TopicsController@save')->name('savetopic'); 

Route::delete('/theme/{id}/topics/{id}/delete', 'TopicsController@destroy')->name('deletetopic'); 

一切方面ing主題web.php

Route::get('/theme/{id}/topics', 'ThemesController@show')->name('showtheme'); 

Route::get('/theme/{id}/edit', 'ThemesController@edit')->name('edittheme'); 
Route::patch('/theme/{id}/edit', 'ThemesController@update')->name('updatetheme'); 

Route::get('/theme/create', 'ThemesController@create')->name('createtheme'); 
Route::post('/theme/create', 'ThemesController@save')->name('savetheme'); 

Route::delete('/theme/{id}/delete', 'ThemesController@destroy')->name('deletetheme'); 

我把這個問題的每一個路線關於這個問題。所以，當我點擊我的觀點鏈接：

<a href="{{ route('showtopic', ['id' => $topic->id]) }}"

我不斷收到我在這個問題 的開頭顯示的錯誤，我希望我做了這個夠清楚了你明白。如果我錯過了這個問題需要的信息，請通知我。在此先感謝

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> 

Answer 1

要使用route()幫手，重命名id到：

Route::get('/theme/{themeId}/topics/{topicId}', 'TopicsController@show')->name('showtopic'); 

而且因爲這條路線有兩個參數，你需要傳遞兩個參數：

{{ route('showtopic', ['themeId' => $theme->id, 'topicId' => $topic->id]) }} 

Answer 2

你必須爲你的路線參數給出了兩個不同的參數名稱

Route::get('/theme/{theme-id}/topics/{topic-id}', 'TopicsController@show')->name('showtopic'); 

，然後通過這兩個參數

{{ route('showtopic', ['theme-id' => $theme->id, 'topic-id' => $topic->id]) }} 

如果你想打電話給你的路線，只有一個參數，然後進行在路線的選擇，因爲

Route::get('/theme/{theme-id}/topics/{topic-id?}', 'TopicsController@show')->name('showtopic'); 

，然後第二個參數傳遞兩個參數

{{ route('showtopic', ['theme-id' => $theme->id]) }}