在laravel中通过标签获取帖子

Question

I am showing each post tags in my blade now I want make some sort of search for my tags, (take image below as sample)

I want when users clicks on laravel tag result of every post with laravel tag show to them.

Question

1. How should I make that function?

Code

posts model

public function tags(){
   return $this->belongsToMany(Tag::class);
}

tags model

public function posts(){
   return $this->belongsToMany(Post::class);
}

Answer 1

Try something like this:

Post::whereHas('tags', function($query) use ($tag) {
    $query->where('title', $tag);
})->get();

Where $tag would be your tag title.

Reference: https://laravel.com/docs/5.6/eloquent-relationships#querying-relationship-existence

Route model binding example from within RouteServiceProvider :

public function boot()
{
    parent::boot();

    Route::patterns([
        'tag_title' => '[a-z]+',
    ]);

    Route::get('posts/{tag_title}', function ($tag_title) {
        return Tag::where('title', $tag_title)->firstOrFail();
    });
}