How to get username by id (Laravel)?

Question

Laravel

Hello.
Created tables:

Users

public function up(): void
    {
        Schema::create('users', function (Blueprint $table) {
            $table->id();

            $table->string('first_name');
            $table->string('middle_name')->nullable();
            $table->string('last_name')->nullable();

            $table->string('nickname')->nullable();
            $table->string('avatar')->default('default.jpg');

            $table->string('email')->unique();
            $table->timestamp('email_verified_at')->nullable();

            $table->string('password');
            $table->rememberToken();

            $table->string('role', 50)->default('guest');

            $table->timestamps();
        });
    }

Posts (blog_posts)

public function up(): void
    {
        Schema::create('blog_posts', function (Blueprint $table) {
            $table->id();
            $table->unsignedBigInteger('category_id');
            $table->unsignedBigInteger('author_id');

            $table->string('title');
            $table->string('slug')->unique();

            $table->text('excerpt')->nullable();
            $table->string('thumbnail')->nullable();

            $table->text('content_raw');
            $table->text('content_html');

            $table->string('tdk_title')->nullable();
            $table->text('tdk_description')->nullable();
            $table->string('tdk_keywords')->nullable();

            $table->unsignedBigInteger('view_count')->default(0);
            $table->boolean('is_published')->default(false);
            $table->timestamp('published_at')->nullable();

            $table->timestamps();
            $table->softDeletes();

            // Foreign keys
            $table->foreign('author_id')
                ->references('id')
                ->on('users')
                ->onDelete('cascade');
            $table->foreign('category_id')
                ->references('id')
                ->on('blog_categories')
                ->onDelete('cascade');

            $table->index('is_published');
        });
    }

Created a connection with Users in the posts table:

$table->foreign('author_id')
                ->references('id')
                ->on('users')
                ->onDelete('cascade');

Since I deviated from the convention (I use author_id instead of user_id), I indicated the relationship in the BlogPost model:

public function user(): BelongsTo
    {
        return $this->belongsTo(User::class, 'author_id', 'id');
    }

In the template I'm trying to get the user's name ($post->author_id->first_name), but as a result I get

When I call $post->author_id - I get the user's id. Tell me, where did you go wrong?

Answer 1

Error in understanding how model relationships work in Laravel, I advise you to read the documentation .
$post->user->first_name

Answer 2

When I call $post->author_id - I get the user's id. Tell me, where did you go wrong?

Most likely in the choice of profession, and also here

//Вместо
$post->author_id->first_name 

//Должно быть
$post->user->first_name