Laravel

Question

我正在使用 Laravel 制作公告板，我希望公告板上的文章可以按 select 年份显示（例如，选择 2022 时，只显示文章 post 2022 年）。我参考了很多类似的问题和 Laravel 的官方网站，但并不顺利，这就是我现在得到的：

select 在“blade.php”中：

<select name="article_year" onchange="">
    @foreach ($year as $item)
        <option value="{{ $item->id}}">{{ $item->name}}</option>
    @endforeach
</select>

'Controller.php' 中的索引（）：

$article_year = $request->get('article_year');
$data['news'] = (new Article())->where('user_year', $article_year)->get();

谁能告诉我问题出在哪里？谢谢！

我参考的一些网站：

Laravel - HTTP Requests

Laravel Discuss - How to get value from Select box

Passing the value of a select from view to controller in Laravel

控制器的完整代码

<?php

namespace App\Http\Controllers;

use App\Article;
use App\Catalog;
use App\User;
use App\Http\Controllers\Controller;
use Request;
use App;

class HomeController extends Controller
{
    public function __invoke(){}

    public function index()
    {
        $locale = Request::segment(1);
        $view = 'home';
        $article_year = $request->get('article_year');

        $data['year'] = (new Catalog())->where('catalog_type_id', 3)->where('is_active', 1)->orderBy('sort_num', 'asc')->get();
        $data['news_pin'] = (new Article())->where('is_active', 1)->where('user_year', $article_year)->orderBy('sort_num', 'desc')->get();
        $data['news'] = (new Article())->where('is_active', 0)->where('user_year', $article_year)->orderBy('sort_num', 'desc')->get();       

        return view($view, $data);
    }
}

Answer 1

试试这个

$article_year = $request->get('article_year');
$data['news'] = Article::where('user_year', $article_year)->get();

return $data;

Answer 2

我认为您错过了一些传递索引方法的依赖关系....这就是您收到 500 服务器错误的原因

在你的索引方法中你没有传递 $request 变量..我认为代码应该是这样的

public function index(Request $request)
    {
        $locale = Request::segment(1);
        $view = 'home';
        $article_year = $request->get('article_year');

        $data['year'] = (new Catalog())->where('catalog_type_id', 3)->where('is_active', 1)->orderBy('sort_num', 'asc')->get();
        $data['news_pin'] = (new Article())->where('is_active', 1)->where('user_year', $article_year)->orderBy('sort_num', 'desc')->get();
        $data['news'] = (new Article())->where('is_active', 0)->where('user_year', $article_year)->orderBy('sort_num', 'desc')->get();       

        return view($view, $data);
    }

并在控制器文件顶部添加这一行

use Illuminate\Http\Request;

Answer 3

谢谢大家的回答，大家给我不同的想法，帮我找到答案。我的代码正在运行：

route-web.php

Route::get('/', 'HomeController@index')->name('home');
Route::post('/', 'HomeController@index');

blade.php

<form>
    <select name="article_year">
        @foreach ($year as $item)
            <option value="{{ $item->name}}">{{ $item->name}}</option>
        @endforeach
    </select>
    <input type="submit" value="Submit Form" />
    </form>

控制器

<?php

namespace App\Http\Controllers;

use App\Article;
use App\Catalog;
use App\User;
use App\Http\Controllers\Controller;
use App;
use Illuminate\Http\Request;

class HomeController extends Controller
{
    public function index(Request $request)
    {
        $view = 'home';
        $value = $request->article_year;

        $data['year'] = (new Catalog())->where('catalog_type_id', 3)->where('is_active', 1)->orderBy('sort_num', 'asc')->get();
        $data['news_pin'] = (new Article())->where('is_active', 1)->where('user_year', $value)->orderBy('sort_num', 'desc')->get();
        $data['news'] = (new Article())->where('is_active', 0)->where('user_year', $value)->orderBy('sort_num', 'desc')->get();

        return view($view, $data);
    }
}

Laravel - 控制器从视图中获取 select 值

Laravel - Controller get select value from Views

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