From fdb196afb7d6c4fce3d0d60e8592758d7154e78e Mon Sep 17 00:00:00 2001
From: Will Taylor-Jackson <will@designmynight.com>
Date: Tue, 5 Feb 2019 15:45:06 +0000
Subject: [PATCH] feat: support `whereNot()`

---
 src/QueryBuilder.php | 18 ++++++++++++++++++
 src/QueryGrammar.php | 28 ++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)

diff --git a/src/QueryBuilder.php b/src/QueryBuilder.php
index 16d72c8..e1c9bbd 100644
--- a/src/QueryBuilder.php
+++ b/src/QueryBuilder.php
@@ -201,6 +201,24 @@ public function whereNestedDoc($column, $query, $boolean = 'and'): self
         return $this;
     }
 
+    /**
+     * Add a 'must not' statement to the query.
+     *
+     * @param  \Illuminate\Database\Query\Builder|static $query
+     * @param  string  $boolean
+     * @return self
+     */
+    public function whereNot($query, $boolean = 'and'): self
+    {
+        $type = 'Not';
+
+        call_user_func($query, $query = $this->newQuery());
+
+        $this->wheres[] = compact('query', 'type', 'boolean');
+
+        return $this;
+    }
+
     /**
      * Add a prefix query
      *
diff --git a/src/QueryGrammar.php b/src/QueryGrammar.php
index cb6b23f..5e43beb 100644
--- a/src/QueryGrammar.php
+++ b/src/QueryGrammar.php
@@ -609,9 +609,37 @@ protected function compileWhereNestedDoc(Builder $builder, $where): array
 
         $query['nested'] = array_merge($query['nested'], array_filter($wheres));
 
+        if (isset($where['operator']) && $where['operator'] === '!=') {
+            $query = [
+                'bool' => [
+                    'must_not' => [
+                        $query
+                    ]
+                ]
+            ];
+        }
+
         return $query;
     }
 
+    /**
+     * Compile a where not clause
+     *
+     * @param  Builder  $builder
+     * @param  array  $where
+     * @return array
+     */
+    protected function compileWhereNot(Builder $builder, $where): array
+    {
+        return [
+            'bool' => [
+                'must_not' => [
+                    $this->compileWheres($where['query'])['query']
+                ]
+            ]
+        ];
+    }
+
     /**
      * Get value for the where
      *