在Laravel中一对一查询

Question

I have two models city and business.I have to perform below queries

1. Find Business by city name.
2. Find Top 10 cities which have the maximum business.

Here is the models

Business

class Business extends \Eloquent 
{
   protected $fillable = [
       'business_type',
       'first_name',
       'last_name',
       'email',
       'password',
       'designation_id',
       'name',
       'description',
       'portfolio_id',
       'image',
       'city_id',
       'package_id',
       'group_tag_id'
   ];

   public function city()
   {
    return $this->belongsTo('City');
   }
}

City

class City extends \Eloquent
{
    protected $fillable = ['name', 'district_id'];
    public function business()
    {
        return $this->hasMany('Business');
    }
}

So How can i do this?

Answer 1

Hi You can fetch this by this ways :

Find Top 10 cities which have the maximum business:

$city = City::with('business')->get()->sortBy(function($query) {
                                        return $query->business->count();
                                    }, SORT_REGULAR, true)
                        ->take(10);

Find Business by city name.

Business::whereHas('city', function ($q) {
   $q->where('name', 'like', 'search_string');//name is the city_name as per your attributes name
})->get();