jucai/app/Http/Controllers/Mobile/Health/TeachController.php

<?php

namespace App\Http\Controllers\Mobile\Health;

use App\Http\Controllers\Mobile\MobileBaseController;
use App\Services\Common\CategoryService;

class TeachController extends MobileBaseController
{
    protected $categoryService;

    public function __construct(CategoryService $categoryService)
    {
        $this->categoryService = $categoryService;
    }

    public function index()
    {
        $district = $this->categoryService->getDefaultDistrict();
        return view('mobile.app.health.teach.index', [
            'defaultCity' => $district->defaultCity,
        ]);
    }
}