fix boolean binding for json updates

src/Illuminate/Database/Query/Builder.php

@@ -2067,6 +2067,8 @@ public function update(array $values)
 
         $sql = $this->grammar->compileUpdate($this, $values);
 
+        $bindings = $this->grammar->prepareBindingsForUpdate($bindings, $values);
+
         return $this->connection->update($sql, $this->cleanBindings($bindings));
     }
 

src/Illuminate/Database/Query/Grammars/Grammar.php

@@ -776,6 +776,18 @@ public function compileUpdate(Builder $query, $values)
         return trim("update {$table}{$joins} set $columns $where");
     }
 
+    /**
+     * Prepare the bindings for an update statement.
+     *
+     * @param  array  $bindings
+     * @param  array  $values
+     * @return array
+     */
+    public function prepareBindingsForUpdate(array $bindings, array $values)
+    {
+        return $bindings;
+    }
+
     /**
      * Compile a delete statement into SQL.
      *

src/Illuminate/Database/Query/Grammars/MySqlGrammar.php

@@ -157,6 +157,28 @@ protected function compileJsonUpdateColumn($key, JsonExpression $value)
         return "{$field} = json_set({$field}, {$accessor}, {$value->getValue()})";
     }
 
+    /**
+     * Prepare the bindings for an update statement.
+     *
+     * @param  array  $bindings
+     * @param  array  $values
+     * @return array
+     */
+    public function prepareBindingsForUpdate(array $bindings, array $values)
+    {
+        $index = 0;
+
+        foreach ($values as $column => $value) {
+            if ($this->isJsonSelector($column) && is_bool($value)) {
+                unset($bindings[$index]);
+            }
+
+            $index++;
+        }
+
+        return $bindings;
+    }
+
     /**
      * Compile a delete statement into SQL.
      *