Count how many reviews a post has - Laravel 5.2 - php

Question

I need to count how many reviews a post has. How would I go about doing that?
Here is my Listing.php Model:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Listing extends Model
{
public function reviews()
{
return $this->hasMany('\App\Review');
}
}
Here is my Review.php model:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Review extends Model
{
protected $fillable = ['stars','name','comment'];
public function listing()
{
return $this->belongsTo('\App\Listing');
}
}
Here is my method that I'am trying to count in controller
public function mostReviews(Request $request) {
$listings = Review::orderBy('-- most reviews here --')->take(10)->get();
$headline = 'Most Reviewed Listings';
return view('pages.listings', compact('listings', 'headline'));
}
Here is my review table:

Answer 1

I haven't tested it but the query below (using the query builder) should give you what you want - 10 listings with the most reviews. Additionally average_stars column should return average stars rate. You can easily modify the query to get 10 highest rated listings by changing orderBy to average_stars.
$listings = \DB::table('reviews AS r')
->select([
'r.listing_id',
\DB::raw('COUNT(*) AS no_of_reviews'),
\DB::raw('AVG(r.stars) AS average_stars'),
'l.*'])
->join('listings AS l', 'l.id', '=', 'r.listing_id')
->limit(10)
->orderBy('no_of_reviews', 'DESC')
->groupBy('listing_id')
->get();
Please note version up to version 5.2 of Laravel this will return array of stdObject. You can easily access those in your blade template in a similar way as Eloquent Collection.
#foreach($listings as $listing)
<tr>
<td>{{ $listing->id }}</td>
<td>{{ $listing->title }}</td>
<td>{{ $listing->no_of_reviews }}</td>
<td>{{ floor($listing->average_stars) }}</td>
</tr>
#endforeach

Answer 2

This is what I did:
public function mostReviews() {
$reviews = DB::table('reviews')
->select(DB::raw('AVG(stars) as review_score, listing_id'))
->groupBy('listing_id')
->orderBy('review_score', 'desc')
->limit(10)
->get();
foreach($reviews as $key => $review) {
$reviews[$key] = Listing::find($review->listing_id);
}
return view('listings.most-reviews', [
'listings' => $reviews
]);
}

Answer 3

Try this
$review = Review::orderBy('-- most reviews here --');
$reviewCount = $review->count();
$listings=$review->take(10)->get();

Answer 4

The following should work
$listing = Listing::with('reviews')->orderByRaw(function($listing)
{
return $listing->review->count();
}, desc)->take(10)->get();

Answer 5

in your listing model:
public function countReview() {
return count($this->reviews);
}
in your views :
{{$listing->countReview()}}
maybe in controller you can write somthing like :
public function mostReviews() {
Review::orderBy('listing', 'desc')->blahblah; // or 'asc'
}