更新数据关联查询，以及基本的数据的编辑，部分有待进一步完善。

app/admin/model/PdmPartitemRelation.php

@@ -32,6 +32,42 @@ class PdmPartitemRelation extends Model
   {
       return $this->hasOne(\app\common\model\system\Admin::Class,'id','creatorid')->bind(['name','nickname']);
   }
+    /**
+  * 定义 sa_pdm_partitem_index 关联模型
+  * @localKey partnumber
+  * @bind description,value,purchasecode
+  */
+  public function pdmPartitemIndex()
+  {
+      return $this->hasOne(\app\admin\model\PdmPartitemIndex::Class,'partnumber','partnumber')->bind(['description','value','purchasecode']);
+  }
+    /**
+  * 定义 sa_pdm_symbol 关联模型
+  * @localKey symbolid
+  * @bind symbolname,view,attachment
+  */
+  public function pdmSymbol()
+  {
+      return $this->hasOne(\app\admin\model\PdmSymbol::Class,'id','symbolid')->bind(['symbolname','view','attachment']);
+  }
+    /**
+  * 定义 sa_pdm_footprint 关联模型
+  * @localKey footprintid
+  * @bind footprint,manufacture,view,attachment
+  */
+  public function pdmFootprint()
+  {
+      return $this->hasOne(\app\admin\model\PdmFootprint::Class,'id','footprintid')->bind(['footprint','manufacture','view','attachment']);
+  }
+    /**
+  * 定义 sa_department 关联模型
+  * @localKey departmentid
+  * @bind title
+  */
+  public function department()
+  {
+      return $this->hasOne(\app\common\model\system\Department::Class,'id','departmentid')->bind(['title']);
+  }