Handle empty whereIn clause (#729)

* handle empty whereIn in Algolia engine

* use IN operator in Meilisearch engine

Author: jshah4517

src/Engines/AlgoliaEngine.php

@@ -167,6 +167,10 @@ protected function filters(Builder $builder)
         })->values();
 
         return $wheres->merge(collect($builder->whereIns)->map(function ($values, $key) {
+            if (empty($values)) {
+                return '0=1';
+            }
+
             return collect($values)->map(function ($value) use ($key) {
                 return $key.'='.$value;
             })->all();

src/Engines/MeilisearchEngine.php

@@ -173,20 +173,20 @@ protected function filters(Builder $builder)
             }
 
             return is_numeric($value)
-                            ? sprintf('%s=%s', $key, $value)
-                            : sprintf('%s="%s"', $key, $value);
+                ? sprintf('%s=%s', $key, $value)
+                : sprintf('%s="%s"', $key, $value);
         });
 
         foreach ($builder->whereIns as $key => $values) {
-            $filters->push(sprintf('(%s)', collect($values)->map(function ($value) use ($key) {
+            $filters->push(sprintf('%s IN [%s]', $key, collect($values)->map(function ($value) {
                 if (is_bool($value)) {
-                    return sprintf('%s=%s', $key, $value ? 'true' : 'false');
+                    return sprintf('%s', $value ? 'true' : 'false');
                 }
 
                 return filter_var($value, FILTER_VALIDATE_INT) !== false
-                                ? sprintf('%s=%s', $key, $value)
-                                : sprintf('%s="%s"', $key, $value);
-            })->values()->implode(' OR ')));
+                    ? sprintf('%s', $value)
+                    : sprintf('"%s"', $value);
+            })->values()->implode(', ')));
         }
 
         return $filters->values()->implode(' AND ');

tests/Unit/AlgoliaEngineTest.php

@@ -136,6 +136,20 @@ public function test_search_sends_correct_parameters_to_algolia_for_where_in_sea
         $engine->search($builder);
     }
 
+    public function test_search_sends_correct_parameters_to_algolia_for_empty_where_in_search()
+    {
+        $client = m::mock(SearchClient::class);
+        $client->shouldReceive('initIndex')->with('table')->andReturn($index = m::mock(stdClass::class));
+        $index->shouldReceive('search')->with('zonda', [
+            'numericFilters' => ['foo=1', '0=1'],
+        ]);
+
+        $engine = new AlgoliaEngine($client);
+        $builder = new Builder(new SearchableModel, 'zonda');
+        $builder->where('foo', 1)->whereIn('bar', []);
+        $engine->search($builder);
+    }
+
     public function test_map_correctly_maps_results_to_models()
     {
         $client = m::mock(SearchClient::class);

tests/Unit/MeilisearchEngineTest.php

@@ -514,7 +514,7 @@ public function test_where_in_conditions_are_applied()
         $client = m::mock(Client::class);
         $client->shouldReceive('index')->once()->andReturn($index = m::mock(Indexes::class));
         $index->shouldReceive('rawSearch')->once()->with($builder->query, array_filter([
-            'filter' => 'foo="bar" AND bar="baz" AND (qux=1 OR qux=2) AND (quux=1 OR quux=2)',
+            'filter' => 'foo="bar" AND bar="baz" AND qux IN [1, 2] AND quux IN [1, 2]',
             'hitsPerPage' => $builder->limit,
         ]))->andReturn([]);
 
@@ -530,7 +530,24 @@ public function test_where_in_conditions_are_applied_without_other_conditions()
         $client = m::mock(Client::class);
         $client->shouldReceive('index')->once()->andReturn($index = m::mock(Indexes::class));
         $index->shouldReceive('rawSearch')->once()->with($builder->query, array_filter([
-            'filter' => '(qux=1 OR qux=2) AND (quux=1 OR quux=2)',
+            'filter' => 'qux IN [1, 2] AND quux IN [1, 2]',
+            'hitsPerPage' => $builder->limit,
+        ]))->andReturn([]);
+
+        $engine = new MeilisearchEngine($client);
+        $engine->search($builder);
+    }
+
+    public function test_empty_where_in_conditions_are_applied_correctly()
+    {
+        $builder = new Builder(new SearchableModel(), '');
+        $builder->where('foo', 'bar');
+        $builder->where('bar', 'baz');
+        $builder->whereIn('qux', []);
+        $client = m::mock(Client::class);
+        $client->shouldReceive('index')->once()->andReturn($index = m::mock(Indexes::class));
+        $index->shouldReceive('rawSearch')->once()->with($builder->query, array_filter([
+            'filter' => 'foo="bar" AND bar="baz" AND qux IN []',
             'hitsPerPage' => $builder->limit,
         ]))->andReturn([]);