Merge #80

80: Fix getTotalCount() method r=curquiza a=curquiza

Remove `nbHits` usage because this is not reliable information.

The Meili team is aware of this. Here are the different issues and comments about it to explain why it's confusing, and why we should not use it:
- meilisearch/meilisearch#1120
- meilisearch/documentation#561
- meilisearch/meilisearch-php#119 (comment)

TLDR;
`nbHits` is not reliable for pagination because can be exhaustive or not, depending on the value of `exhaustiveNbHits` that MeiliSearch returns which is always `false` for the moment.

We are sorry for this. We all hope this confusion will be fixed asap in MeiliSearch.

⚠️ The linter error in the CI will be fixed with #82  

Co-authored-by: Clémentine Urquizar <[email protected]>

Author: bors[bot]

src/Engines/MeilisearchEngine.php

@@ -195,7 +195,7 @@ public function map(Builder $builder, $results, $model)
      */
     public function getTotalCount($results)
     {
-        return $results['nbHits'];
+        return count($results['hits']);
     }
 
     /**

tests/MeilisearchEngineTest.php

@@ -69,7 +69,7 @@ public function mapIdsReturnsEmptyCollectionIfNoHits()
         $engine = new MeilisearchEngine($client);
 
         $results = $engine->mapIds([
-            'nbHits' => 0, 'hits' => [],
+            'hits' => [],
         ]);
 
         $this->assertEquals(0, count($results));
@@ -87,7 +87,7 @@ public function mapCorrectlyMapsResultsToModels()
         $builder = m::mock(Builder::class);
 
         $results = $engine->map($builder, [
-            'nbHits' => 1, 'hits' => [
+            'hits' => [
                 ['id' => 1],
             ],
         ], $model);
@@ -113,7 +113,7 @@ public function mapMethodRespectsOrder()
         $builder = m::mock(Builder::class);
 
         $results = $engine->map($builder, [
-            'nbHits' => 4, 'hits' => [
+            'hits' => [
                 ['id' => 1],
                 ['id' => 2],
                 ['id' => 4],