laravel 调用未定义的方法 Illuminate\Database\Query\Builder::withTrashed()
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Call to undefined method Illuminate\Database\Query\Builder::withTrashed()
提问by BARNOWL
Not sure what im doing wrong but im getting this error, and im not sure how to solve it.
不知道我做错了什么，但我收到了这个错误，我不知道如何解决它。
i referenced this, but im still unsure, maybe its my schema migration
我引用了这个，但我仍然不确定，也许是我的架构迁移
im using laravel 5.5
我使用 Laravel 5.5
laravel 5.2 Call to undefined method Illuminate\Database\Query\Builder::associate()
laravel 5.2 调用未定义的方法 Illuminate\Database\Query\Builder::associate()
Call to undefined method Illuminate\Database\Query\Builder::withTrashed()
调用未定义的方法 Illuminate\Database\Query\Builder::withTrashed()
PostController.php
后控制器.php
public function isLikedByMe($id)
{
$post = Post::findOrFail($id)->first();
if (Like::whereUserId(auth()->id())->wherePostId($post->id)->exists()){
return 'true';
}
return 'false';
}
public function like(Post $post)
{
$existing_like = Like::withTrashed()->wherePostId($post->id)->whereUserId(auth()->id())->first();
if (is_null($existing_like)) {
Like::create([
'post_id' => $post->id,
'user_id' => auth()->id()
]);
} else {
if (is_null($existing_like->deleted_at)) {
$existing_like->delete();
} else {
$existing_like->restore();
}
}
Likes Model
喜欢模型
class Like extends Model
{
//
}
User modelcondensed to whats important
用户模型浓缩到什么是重要的
public function likes()
{
return $this->belongsToMany('App\Post', 'likes', 'user_id', 'post_id');
}
Post model
后模型
public function likes()
{
return $this->belongsToMany('App\User', 'likes');
}
Migration:
移民：
likes migration
喜欢迁移
public function up()
{
Schema::create('likes', function (Blueprint $table) {
$table->increments('id');
$table->integer('post_id')->unsigned();
$table->integer('user_id')->unsigned();
$table->foreign('post_id')->references('id')->on('posts');
$table->foreign('user_id')->references('id')->on('users');
$table->softDeletes();
$table->timestamps();
});
}
Posts migration
帖子迁移
public function up()
{
Schema::create('posts', function (Blueprint $table) {
$table->increments('id');
$table->string('title');
$table->text('body');
$table->integer('user_id')->unsigned();
$table->foreign('user_id')->references('id')->on('users');
$table->timestamps();
});
}
回答by
Your Eloquent model should use the Illuminate\Database\Eloquent\SoftDeletestrait to make use of the withTrashed()method.
您的 Eloquent 模型应该使用Illuminate\Database\Eloquent\SoftDeletestrait 来使用该withTrashed()方法。
Like::class
喜欢::类
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
class Like extends Model
{
use SoftDeletes;
}
