Question

我希望能够显示不同的内容，具体取决于在url中调用的变量。想知道$ slug是slug，让我们说它是一个帖子ID，所以如果$ id是活动的，那么只显示其他帖子如果$ month处于活动状态，则显示该月的所有帖子elseif $ month和$ id = null显示全部。这就是我想要实现的目标

routes.php文件

Route::get('blog/{slug}', ['as' => 'blog.slug', 'uses' => 'BlogController@getSlug']);
Route::get('blog/{month}', ['as' => 'blog.slug', 'uses' => 'BlogController@getSlug']);

BlogController.php

<?php

类BlogController扩展了BaseController {

public function BlogIndex()
   {
     //get the posts from the database by asking the Active Record for "all"
    $blogs = Blog::all();
    $blogs = DB::table('blogs')->paginate(3);
    // and create a view which we return - note dot syntax to go into folder
    return View::make('pages.blog', array('blogs' => $blogs));
}
public function ShowbySlug($slug)
{          
       $blogs = Blog::where('slug', '=', $slug)->get();
// show the view with blog posts (app/views/pages/blog.blade.php)
    return View::make('pages.blog')
        ->with('slug', $slug)
        ->with('blogs', $blogs);
}
public function ShowbyMonth($month)
{
       $blogs = Blog::where('month', '=', $month)->get();
// show the view with blog posts (app/views/pages/blog.blade.php)
    return View::make('pages.blog')
        ->with('month', $month)
         ->with('blogs', $blogs);
}

}

blog.blade.php

   @foreach ($blogs as $blog)
  @if(isset($blogs)) 
    <div class="blog-outer-wrap">
    <img src="images/blog/{{ $blog->img}}"> 
     <div class="blog-header">{{ $blog->header }}</div>
    <div class="blog-text">{{ $blog->content }}</div>
    <a href="{{ URL::route('blog.slug', [$blog->slug]) }}">
    </div>

  @elseif(isset($slug)) 
    <div class="blog-outer-wrap">
    <img src="images/blog/{{ $blog->img}}"> 
     <div class="blog-header">{{ $blog->header }}</div>
    <div class="blog-text">{{ $blog->content }}</div>
    </div>
    @endif
  @endforeach

Answer 1

你真的不能这样做，因为你刚刚宣布了两次相同的路线。当您说路线为blog/{slug}时，slug只是一个占位符。它与blog/{month}完全相同。它只是说：“我希望blog/后跟任何。”如果您拨打任何内容 slug或month，则无关紧要。也就是说，参数不会相加。

你可以做的是，如果你认为slug总是一个字符串而month总是一个数字（或月份的名称²），那么就应用于{{3像这样：

// Route for all blog posts
Route::get('blog', 'BlogController@showAll');

// Route for all blog posts in a month; only numbers as parameters
Route::get('blog/{month}', 'BlogController@showByMonth')
     ->where('month', '[0-9]+');

// Route for all blog posts by title; anything else as parameters
Route::get('blog/{slang}', 'BlogController@showBySlang');

在您的控制器上，定义三种方法，每种方法一种：

public function showAll() {
    $blogs = Blog::all();

    return View::make('pages.blog')
               ->with('blogs', $blogs);
}

public function showByMonth($month) {
    $blogs = Blog::where('month', $month)
                 ->get();

    return View::make('pages.blog')
               ->with('blogs', $blogs);
}

public function showBySlug($slug) {
    $blogs = Blog::where('slug', $slug)
                 ->get();

    return View::make('pages.blog')
               ->with('blogs', $blogs);
}

¹除非你使用了一些更高级的路由功能，否则这不是重点。

²可以使用where子句，但如果你想考虑所有大写/小写组合，那将会很难看。例如：([Jj][Aa][Nn][Uu][Aa][Rr][Yy]|[Ff][Ee][Bb][Rr][Uu][Aa][Rr][Yy]|...)

定义多个变量laravel以在if语句中使用

1 个答案: