app: removed all references to user_location table

The user_location table became useless since we're calculating personalized ratings off the new ratings_cache field on the location table instead.

The ratings_cache was added in pull request #488 and user_location table became quite pointless after that.

Author: joshi1983

app/app/AnswerRepository.php

@@ -262,8 +262,6 @@ public static function commitAnswersForLocation(string $location_id)
             $location->universal_rating = null;
             $location->ratings_cache = null;
             $location->save();
-            // invalidate the personalized rating cache for this location.
-            DB::table('user_location')->where('location_id', '=', $location_id)->delete();
         }
         AnswerRepository::destroyUncommittedChanges();
     }

app/app/Http/Controllers/ProfileController.php

@@ -130,13 +130,6 @@ public function save(Request $request)
                 $questions_updated = true;
             }
         }
-        if ($questions_updated) {
-            /*
-            If the accessibility needs changed,
-            the personalized ratings need to be recalculated.
-            */
-            $user->personalizedRatings()->detach();
-        }
 
         $user->save();
 

app/app/Location.php

@@ -52,11 +52,6 @@ public function tags()
         return $this->belongsToMany('App\LocationTag');
     }
 
-    public function personalizedRatings()
-    {
-        return $this->hasMany('App\UserLocation');
-    }
-
     public function comments()
     {
         return $this->hasMany(ReviewComment::class);

app/app/User.php

@@ -81,18 +81,7 @@ public function requiredQuestions()
     {
         return $this->belongsToMany(Question::class, 'user_question');
     }
-    
-    /**
-    personalizedRatings reteurns an Eloquent query object that
-    can be used to get the personalized ratings for various locations.
 
-    This is used as a cache for speeding up display of many locations while signed in.
-    */
-    public function personalizedRatings()
-    {
-        return $this->belongsToMany(Location::class, 'user_location');
-    }
-    
     public static function generateSaltedHash($password)
     {
         return Hash::make($password);