Add relevance attribute to Models if Mode is FullText compatible (NATURAL or BOOLEAN)

Author: Aurélien MENDES

src/Engines/Modes/Boolean.php

@@ -20,6 +20,13 @@ public function buildWhereRawString(Builder $builder)
         return $queryString;
     }
 
+    public function buildSelectColumns(Builder $builder)
+    {
+        $indexFields = implode(',',  $this->modelService->setModel($builder->model)->getFullTextIndexFields());
+
+        return "*, MATCH($indexFields) AGAINST(? IN NATURAL LANGUAGE MODE) AS relevance";
+    }
+
     public function buildParams(Builder $builder)
     {
         $this->whereParams[] = $builder->query;

src/Engines/Modes/NaturalLanguage.php

@@ -25,6 +25,13 @@ public function buildWhereRawString(Builder $builder)
         return $queryString;
     }
 
+    public function buildSelectColumns(Builder $builder)
+    {
+        $indexFields = implode(',',  $this->modelService->setModel($builder->model)->getFullTextIndexFields());
+
+        return "*, MATCH($indexFields) AGAINST(? IN NATURAL LANGUAGE MODE) AS relevance";
+    }
+
     public function buildParams(Builder $builder)
     {
         $this->whereParams[] = $builder->query;

src/Engines/MySQLEngine.php

@@ -4,6 +4,7 @@
 
 use Yab\MySQLScout\Engines\Modes\ModeContainer;
 use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Support\Facades\DB;
 use Laravel\Scout\Builder;
 use Laravel\Scout\Engines\Engine;
 
@@ -65,6 +66,9 @@ public function search(Builder $builder)
 
         $model = $builder->model;
         $query = $model::whereRaw($whereRawString, $params);
+        if ($mode->isFullText()) {
+            $query = $query->selectRaw(DB::raw($mode->buildSelectColumns($builder)), $params);
+        }
 
         if($builder->callback){
             $query = call_user_func($builder->callback, $query, $this);