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here is my code: 

$nid = $entity->field_empf_number['und']['0']['nid'];  
$result = db_query("SELECT MAX(entity_id) FROM field_data_field_empf_number WHERE field_empf_number_nid = $nid")->fetchField();  
if (isset($result)){  
  $n = $result ;  
  $node = node_load($n);  
  $node->field_empf_stat['und']['0']['value'] = 'off';  //list field  
  node_save($node);  
}  
$entity_field[0]['value'] = $result;`

when add new node (if there is previous node i mean the if statement return true ) this error message show up:

Fatal error: Maximum function nesting level of '100' reached, aborting! in C:\wamp\www\finance\includes\database\database.inc on line 429

I googled but i did not found any answers.

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2  
I guess you are calling this in one of the node hooks which will become infinite loop because of node_save in the code !! – Anil Sagar Oct 16 '12 at 11:50
are you telling me to write "node_Save" function out of the if statement? – abd Oct 16 '12 at 12:27
I mean where is above code written ?? – Anil Sagar Oct 16 '12 at 12:30
2  
What Anil means is that the computed field is probably computed when a node is saved. Since you save a node (again) the computed field is computed again, which causes a node to be saved, which causes the computed field to be saved, and so on, forever. – Letharion Oct 16 '12 at 13:15
but this problem caused when creating new node – abd Oct 16 '12 at 14:17

1 Answer

up vote 1 down vote

Try to change the node_save($node) to drupal_register_shutdown_function('node_save', $node). It will remove the old node saving process from the actual node saving. But I don't think, that type of code should have place within a computed field. The computed field good to modify the same field. It isn't designed for modifying other data of your system. These code should be in a custom module in hook_node_presave().

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