* Fix bug #19046.

module/tree/model.php

@@ -1668,7 +1668,13 @@ class treeModel extends model
         {
             $this->dao->update(TABLE_MODULE)->set('root')->eq($module->root)->where('id')->in($childs)->exec();
             $this->dao->update(TABLE_MODULE)->set('branch')->eq($module->branch)->where('id')->in($childs)->exec();
-            if($self->type == 'doc') $this->dao->update(TABLE_DOC)->set('`lib`')->eq($module->root)->where('module')->eq($moduleID)->exec();
+            if($self->type == 'doc')
+            {
+                $this->dao->update(TABLE_DOC)->set('`lib`')->eq($module->root)
+                    ->where('module')->eq($moduleID)
+                    ->orWhere('module')->in($childs)
+                    ->exec();
+            }
         }
         $this->fixModulePath(isset($module->root) ? $module->root : $self->root, $self->type);
         if(isset($module->root) and $module->root != $self->root) $this->changeRoot($moduleID, $self->root, $module->root, $self->type);

module/upgrade/model.php

@@ -754,6 +754,7 @@ class upgradeModel extends model
             $this->saveLogs('Execute 16_2');
             $this->execSQL($this->getUpgradeFile('16.2'));
             $this->updateSpaceTeam();
+            $this->updateDocField();
             $this->appendExec('16_2');
         }
 
@@ -5581,4 +5582,23 @@ class upgradeModel extends model
 
         return true;
     }
+
+    /**
+     * Document library for updating documents.
+     *
+     * @access public
+     * @return bool
+     */
+    public function updateDocField()
+    {
+        $hasModuleDocs = $this->dao->select('*')->from(TABLE_DOC)->where('module')->ne(0)->fetchAll('id');
+        $docModules    = $this->dao->select('*')->from(TABLE_MODULE)->where('type')->eq('doc')->fetchAll('id');
+        foreach($hasModuleDocs as $doc)
+        {
+            $libID = isset($docModules[$doc->module]->root) ? $docModules[$doc->module]->root : 0;
+            if(!$libID or $libID == $doc->lib) continue;
+            $this->dao->update(TABLE_DOC)->set('lib')->eq($libID)->where('id')->eq($doc->id)->exec();
+        }
+        return true;
+    }
 }