在 HomeController 中按类别名称获取帖子 (Laravel 8)

Question

详细解释一下：例如，我正在创建带有类别的 posts，但是我将其保存在不同的 table (post_categories) 中，这意味着我的 posts 和类别通过他们的 ID（属于 ToMany）。现在在我的 HomeController 中，我想按类别名称显示 posts，例如：$posts = post::where([['status',1],['category', 'electronics'])->orderBy('created_at', 'DESC')->limit(1)->get();

我想按类别名称而不是类别 ID 显示我的 post

我试过了，但它并没有真正起作用，我想我忘记了什么或者我使用了错误的方法，请帮助我

代码

家庭控制器

public function index()
{
    $posts = post::where([['status',1],//here is category missing])->orderBy('created_at', 'DESC')->limit(1)->get();
    $categories = Category::all();
    return view('user.home', compact('posts', 'categories'));
}
public function category(category $category)
{
    $posts = $category->posts();
    return view('user.home',compact('posts'));
}

类别模型

use HasFactory;

public function posts()
{
    return $this->belongsToMany('App\Models\user\post','category_posts')->orderBy('created_at','DESC')->paginate(5);
}

public function getRouteKeyName()
{
    return 'slug';
}

post 型号

 use HasFactory;

public function categories()
{
    return $this->belongsToMany('App\Models\user\category','category_posts')->withTimestamps();;
}
public function getRouteKeyName()
{
    return 'slug';
}

数据库

Posts_table

    public function up()
{
    Schema::create('posts', function (Blueprint $table) {
        $table->id();
        $table->string('title',1000);
        $table->string('subtitle',1000);
        $table->string('slug',1000)->nullable();
        $table->text('body');
        $table->boolean('status')->nullable();
        $table->integer('posted_by')->nullable();
        $table->string('image')->nullable();
        $table->timestamps();
    });
}

Categories_table

public function up()
{
    Schema::create('categories', function (Blueprint $table) {
        $table->id();
        $table->string('name');
        $table->string('slug');
        $table->timestamps();
    });
}

category_posts

public function up()
{
    Schema::create('category_posts', function (Blueprint $table) {
        $table->unsignedBigInteger('post_id');
        $table->unsignedInteger('category_id');
        $table->foreign('post_id')->references('id')->on('posts')->onDelete('cascade');
        $table->timestamps();
    });
}

Answer 1

    public function index()
{
    $posts = post::with('categories')->where([['status',1],//here is category missing])->orderBy('created_at', 'DESC')->limit(1)->get();
    $categories = Category::all();// don't need  this line if you don't need all categires
    return view('user.home', compact('posts', 'categories'));
}

Answer 2

我已经有了答案我删除了关系并将位置添加到一个值以便 c

在 HomeController 中按类别名称获取帖子 (Laravel 8)

Get posts by category's name in HomeController (Laravel 8)

database

collections

laravel

eloquent

categorical-data