Added support for arbitrary number of parameters for NOT, AND, OR in filter methods of Query

extensions/sphinx/Query.php

@@ -822,11 +822,24 @@ class Query extends Component implements QueryInterface
                 case 'NOT':
                 case 'AND':
                 case 'OR':
-                    $subCondition = $this->filterCondition($condition[1]);
+                    for ($i = 1, $operandsCount = count($condition); $i < $operandsCount; $i++) {
+                        $subCondition = $this->filterCondition($condition[$i]);
                         if ($this->parameterNotEmpty($subCondition)) {
-                        $condition[1] = $subCondition;
+                            $condition[$i] = $subCondition;
                         } else {
+                            unset($condition[$i]);
+                        }
+                    }
+
+                    $operandsCount = count($condition) - 1;
+                    if ($operator === 'NOT' && $operandsCount === 0) {
                         $condition = [];
+                    } else {
+                        // reindex array
+                        array_splice($condition, 0, 0);
+                        if ($operandsCount === 1) {
+                            $condition = $condition[1];
+                        }
                     }
                 break;
                 case 'IN':

framework/db/Query.php

@@ -909,11 +909,24 @@ class Query extends Component implements QueryInterface
                 case 'NOT':
                 case 'AND':
                 case 'OR':
-                    $subCondition = $this->filterCondition($condition[1]);
+                    for ($i = 1, $operandsCount = count($condition); $i < $operandsCount; $i++) {
+                        $subCondition = $this->filterCondition($condition[$i]);
                         if ($this->parameterNotEmpty($subCondition)) {
-                        $condition[1] = $subCondition;
+                            $condition[$i] = $subCondition;
                         } else {
+                            unset($condition[$i]);
+                        }
+                    }
+
+                    $operandsCount = count($condition) - 1;
+                    if ($operator === 'NOT' && $operandsCount === 0) {
                         $condition = [];
+                    } else {
+                        // reindex array
+                        array_splice($condition, 0, 0);
+                        if ($operandsCount === 1) {
+                            $condition = $condition[1];
+                        }
                     }
                 break;
                 case 'IN':

tests/unit/extensions/sphinx/QueryTest.php

@@ -120,11 +120,7 @@ class QueryTest extends SphinxTestCase
     public function testFilterRecursively()
     {
         $query = new Query();
-        $query->filter(['not', ['like', 'name', '']]);
-        $this->assertEquals(null, $query->where);
-
-        $query->where(['id' => 1]);
-        $query->filter(['and', ['like', 'name', '']]);
+        $query->filter(['and', ['like', 'name', ''], ['like', 'title', ''], ['id' => 1], ['not', ['like', 'name', '']]]);
         $this->assertEquals(['id' => 1], $query->where);
     }
 

tests/unit/framework/db/QueryTest.php

@@ -109,11 +109,7 @@ class QueryTest extends DatabaseTestCase
     public function testFilterRecursively()
     {
         $query = new Query();
-        $query->filter(['not', ['like', 'name', '']]);
-        $this->assertEquals(null, $query->where);
-
-        $query->where(['id' => 1]);
-        $query->filter(['and', ['like', 'name', '']]);
+        $query->filter(['and', ['like', 'name', ''], ['like', 'title', ''], ['id' => 1], ['not', ['like', 'name', '']]]);
         $this->assertEquals(['id' => 1], $query->where);
     }