Infrequent Error

Infrequent Error

Posted by: matth on 31 January 2018, 12:17 am EST

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  matth

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  Posted 31 January 2018, 12:17 am EST

  I am using this snippet to find an item using a key to change one of the fields:

  function searchGridandUpdate(idkey, qty) {
              var fg = document.getElementById('flexGrid');
              var wfg = wijmo.Control.getControl(fg).itemsSource.items;
              var item;
              var pos;
              for (var i = 0; i < wfg.length; i++) {
                  if (wfg[i].OrderItemKey === idkey) {
                      item = wfg[i];
                      pos = i;
                      break;
                  }
              }
              wfg[pos].QtyRemaining = wfg[pos].QtyRemaining - qty;
              wijmo.Control.getControl(fg).collectionView.refresh(wfg[pos]);
              if (wfg[pos].QtyRemaining <= 0) {
                  wijmo.Control.getControl(fg).collectionView.remove(wfg[pos]);
              }
          };
  

  Seldomly I am getting a pos not defined error. I am expecting that it should always find the key that I am looking for. Is there any way to harden this? Is there a better way to look up a value in the data grid? Your thoughts are appreciated.

  Matt

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  matth

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  Posted 31 January 2018, 12:18 am EST

  I have only seen the error in a production environment and never in debugging.

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  grapecity

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  Posted 1 February 2018, 10:07 am EST

  Hi Matthew,

  I would suggest you update your code to this snippet:

  
          function searchGridandUpdate(idkey, qty) {
              var fg = document.getElementById('flexGrid');
              var wfg = wijmo.Control.getControl(fg).itemsSource.items;
              for (var i = 0; i < wfg.length; i++) {
                  if (wfg[i].OrderItemKey === idkey) {
                      wfg[i].QtyRemaining = wfg[i].QtyRemaining - qty;
                      wijmo.Control.getControl(fg).collectionView.refresh(wfg[i]);
                      if (wfg[i].QtyRemaining <= 0) {
                         wijmo.Control.getControl(fg).collectionView.remove(wfg[i]);
                      }
                      break;
                  }
              }
              
          };
  
  

  ~nilay