Расширен функционал Yii2 QueryBuilder: теперь функционал ORDER BY FIELD встроен внутрь билдера

common/db/mysql/QueryBuilder.php

@@ -0,0 +1,39 @@
+<?php
+namespace common\db\mysql;
+
+use yii\db\Expression;
+use yii\db\mysql\QueryBuilder as MysqlQueryBuilder;
+
+class QueryBuilder extends MysqlQueryBuilder {
+
+    public function buildOrderBy($columns) {
+        if (empty($columns)) {
+            return '';
+        }
+
+        $orders = [];
+        foreach($columns as $name => $direction) {
+            if ($direction instanceof Expression) {
+                $orders[] = $direction->expression;
+            } elseif (is_array($direction)) {
+                // This is new feature
+                if (empty($direction)) {
+                    continue;
+                }
+
+                $fieldValues = [];
+                foreach($direction as $fieldValue) {
+                    $fieldValues[] = $this->db->quoteValue($fieldValue);
+                }
+
+                $orders[] = 'FIELD(' . $this->db->quoteColumnName($name) . ',' . implode(',', $fieldValues) . ')';
+                // End of new feature
+            } else {
+                $orders[] = $this->db->quoteColumnName($name) . ($direction === SORT_DESC ? ' DESC' : '');
+            }
+        }
+
+        return 'ORDER BY ' . implode(', ', $orders);
+    }
+
+}

common/db/mysql/Schema.php

@@ -0,0 +1,12 @@
+<?php
+namespace common\db\mysql;
+
+use yii\db\mysql\Schema as MysqlSchema;
+
+class Schema extends MysqlSchema {
+
+    public function createQueryBuilder() {
+        return new QueryBuilder($this->db);
+    }
+
+}