Creating relations abstract classes

2022-03-23 22:01:08 +00:00
parent f5c2a9b6f4
commit ec52a9b573
5 changed files with 169 additions and 0 deletions
@@ -0,0 +1,49 @@
+<?php
+
+namespace ORM;
+
+class BelongsToMany {
+
+    private $localObject;
+    private $foreignObject;
+    private $pivotTable;
+    private $localInPivot;
+    private $remoteInPivot;
+    private $remoteFilter;
+    private $remoteLimit;
+
+    function __construct($localObject, $foreignObject, $pivotTable, $localInPivot, $remoteInPivot, $remoteFilter = Array(), $remoteLimit = Array()) {
+        $this->localObject = $localObject;
+        $this->foreignObject = $foreignObject;
+        $this->pivotTable = $pivotTable;
+        $this->localInPivot = $localInPivot;
+        $this->remoteInPivot = $remoteInPivot;
+        $this->remoteFilter = $remoteFilter;
+        $this->remoteLimit = $remoteLimit;
+    }
+
+    function get() {
+        
+        $limitsSql = '';
+        foreach ($this->remoteLimit as $key => $value) {
+            $limitsSql .= "$key $value ";
+        }
+
+        $pivotTable = '{' . $this->pivotTable . '}';        
+        $sql = "SELECT $this->remoteInPivot FROM $pivotTable WHERE $this->localInPivot = ? $limitsSql";
+        
+        $relations = DBInstance::query($sql, Array($this->localObject->id), $this->localObject::_connectionName);
+                
+        $ids = Array();        
+        foreach ($relations as $relation) {
+            $ids[] = $relation->{$this->remoteInPivot};
+        }
+        
+        if (empty($ids)) {
+            return Array();
+        }
+        
+        return $this->foreignObject::findMany(array_merge(Array('id' => Array('IN', $ids)), $this->remoteFilter), Array('*'), $this->remoteLimit);        
+    }
+
+}