php - laravel 中的“喜欢”按钮在页面刷新之前不会改变状态

Question

我创建了一个能够收藏帖子的“Like”功能（我知道是因为我在单击“Like”后检查了 DB 中的收藏表）。但是在我点击按钮后，按钮描述保持不变而不是更改为“不喜欢”，即“喜欢”文本在点击按钮后仍然存在。目前，状态/按钮文本仅在我手动重新加载/刷新页面后才会更改。请，我需要帮助以在单击时更改按钮状态，而无需手动刷新页面。非常感谢。

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   **Model Post.php** -> contains method to check if post is favorited or not

        public function favorited()
        {
        return (bool) Favorite::where('user_id', Auth::id())
                    ->where('post_id', $this->id)
                    ->first();
        }


   **Model User.php**

      public function favorites()
      {
      return $this->belongsToMany(Post::class, 'favorites', 'user_id', 
      'post_id')->withTimeStamps();
      }


     **Controller**

     <?php

    namespace App\Http\Controllers;

    use App\Models\User;
    use App\Models\Post;
    use Illuminate\Support\Facades\Auth;
    use Illuminate\Http\Request;

    class FavoriteController extends Controller
    {
    
    public function __construct(){
      $this->middleware('auth');
    }

    public function store(User $user, $post){
      return auth()->user()->favorite_list()->toggle($post->favorites);
    }


    public function favoritePost(Post $post)
    {
      Auth::user()->favorites()->attach($post->id);
      return back();
    }


    public function unFavoritePost(Post $post)
    {
       Auth::user()->favorites()->detach($post->id);
       return back();
    }

    }


   **FavoriteButton.Vue Component**

      <template>
      <span>
      <a href="#" v-if="isFavorited" class="btn btn-success" @click.prevent="unFavorite(post)">
        Like
      </a>
      <a href="#" v-else @click.prevent="favorite(post)" class="btn btn-success">
        Unlike
      </a>
      </span>
      </template>

      <script>
      export default {
      props: ['post', 'favorited'],

   
      mounted() {
        this.isFavorited = this.isFavorite ? true : false;
      },



      computed: {
        isFavorite() {
            return this.favorited;
        },
      },


      data: function() {
        return {
            isFavorited: '',
        }
      },


   

       methods: {
        favorite(post) {
            axios.post('/favorite/'+post)
                .then(response => this.isFavorited = true)
                .catch(response => console.log(response.data));
        },

        unFavorite(post) {
            axios.post('/unfavorite/'+post)
                .then(response => this.isFavorited = false)
                .catch(response => console.log(response.data));
        }
       }
      }
      </script>


    **HTML** 
          @foreach($posts as $post)
           <div class="container">
               <div style=""   class="container">
                    <h5 style="display: inline">Status: </h5>
                    <h6 style="display: inline">{{$post->batch_no}}</h6>
                </div>
          <favorite-button
          :post="{{ $post->id }}"
          :favorited="{{ $post->favorited() ? 'true' : 'false' }}"
          ></favorite-button>
          </div>
          @endforeach
         

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Answer 1

我测试了 vue 组件，这似乎有效。您能否尝试将您的 vue 组件方法修改为以下代码并对其进行测试。注意 URL 和 post 数据之间的逗号。

methods: {
  favorite(post) {
    axios.post('https://httpbin.org/post', post)
        .then(response => this.isFavorited = true)
        .catch(response => console.log(response.data));
  },

  unFavorite(post) {
    axios.post('https://httpbin.org/post', post)
        .then(response => this.isFavorited = false)
        .catch(response => console.log(response.data));
  }
}

如果您的“喜欢/不喜欢”按钮可以使用此功能（我尝试过时确实如此），那么您的后端代码可能是罪魁祸首，并且没有以成功的响应代码响应。