fixed order by in __backRef query

SE/se-lib/AclQueryBuilder.php

@@ -229,8 +229,16 @@ class AclQueryBuilder {
 		if (empty($this->orderBy)) return '';
 		$sortByList = [];
 		foreach ($this->orderBy as $orderBy) {
-			$sqlOrderByField = $this->getPDO()->identifierQuote($orderBy[0]);
-			$sortByList[] = "t.{$sqlOrderByField} {$orderBy[1]}";
+			list($fieldName, $orderDir) = $orderBy;
+			if (false !== strpos($fieldName, '.')) {
+				list($joinPrefix, $joinFieldName) = explode('.', $fieldName, 2);
+				$sqlOrderByField = $this->getPDO()->identifierQuote($joinFieldName);
+				if ('t' !== $joinPrefix && !array_key_exists($joinPrefix, $this->_joinParams)) throw new Exception("Missing table prefix '{$joinPrefix}' in orderBy");
+				$sortByList[] = "{$joinPrefix}.{$sqlOrderByField} {$orderDir}";
+			} else {
+				$sqlOrderByField = $this->getPDO()->identifierQuote($fieldName);
+				$sortByList[] = "t.{$sqlOrderByField} {$orderDir}";
+			}
 		}
 		return (!empty($sortByList))
 			? "order by " . implode(", ", $sortByList)

SE/se-lib/AclQueryFeatures.php

@@ -374,13 +374,23 @@ class AclQueryFeatures {
 			// TODO: 'in' operator? // $this->_query->where($pkField, 'in', "");
 			$sqlPk = $this->getAclSqlPrimaryKeyField();
 			$sqlBackRefPk = DB::getPDO()->quote($backRef['primaryKey']);
-			$this->_query->where("
-				t.{$sqlPk} in (
-					select refTable.REMOTE_PRIMARY_KEY
-					from `{$refTable}` refTable
-					where refTable.PRIMARY_KEY = {$sqlBackRefPk}
-				)
-			");
+			$limit = V::get('limit', 10, $this->_params, 'int');
+			$offset = V::get('limitstart', 0, $this->_params, 'int');
+			DBG::log(['limit' => $limit, 'offset' => $offset], 'array', "DBG: limit with __backRef \$this->_params");
+			$sqlLimit = "limit {$limit} offset {$offset}";
+			// $this->_query->where("
+			// 	t.{$sqlPk} in (
+			// 		select refTable.REMOTE_PRIMARY_KEY
+			// 		from `{$refTable}` refTable
+			// 		where refTable.PRIMARY_KEY = {$sqlBackRefPk}
+			// 		order by refTable.REMOTE_PRIMARY_KEY DESC -- TODO refTable.SORT_PRIO
+			// 		-- {$sqlLimit} -- BUG MariaDB not support limit in subquery
+			// 	)
+			// ");
+			// TODO: convert `where t.ID in ( ... )` into `join` and `order by`
+			// join `CRM__#REF_TABLE__120_VIEW` refTable on (refTable.REMOTE_PRIMARY_KEY = t.ID and refTable.PRIMARY_KEY = '37' )
+			$this->_query->join($refTable, 'refTable', [ 'rawJoin' => "t.{$sqlPk} = refTable.REMOTE_PRIMARY_KEY and refTable.PRIMARY_KEY = {$sqlBackRefPk}" ]);
+			// moved to getItems: $this->_query->orderBy("refTable.REMOTE_PRIMARY_KEY DESC"); // TODO: order by refTable.SORT_PRIO
 		}
 
 		if (array_key_exists('__childRef', $this->_params)) {
@@ -470,6 +480,9 @@ class AclQueryFeatures {
 		//	'order_dir' => 'desc',
 		// TODO: sortBy from wfs query
 		$sortBy = ($this->hasParam('sortBy')) ? $this->getParam('sortBy') : null;
+		if (!$sortBy && array_key_exists('__backRef', $this->_params)) {
+			$sortBy = "refTable.REMOTE_PRIMARY_KEY DESC"; // TODO: order by refTable.SORT_PRIO
+		}
 		if (!$sortBy) {
 			$sortBy = $this->hasParam('order_by')
 				? ( $this->hasParam('order_dir')
@@ -617,6 +630,7 @@ class AclQueryFeatures {
 						select r.REMOTE_PRIMARY_KEY
 						from `{$refTable}` r
 						where r.PRIMARY_KEY = '{$primaryKey}'
+						order by r.REMOTE_PRIMARY_KEY DESC  -- TODO r.SORT_PRIO
 						limit {$refLimitPlus1}
 					");
 					DBG::log($xlinks, 'array', "add remote xlink's for '{$fieldName}' \$items[{$primaryKey}]");