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Need TOTAL row count in child list, filtered or not

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  • Need TOTAL row count in child list, filtered or not

    This gets me the count of rows when the child list is filtered on the parent:
    Code:
    var listObj = {dialog.object}.getControl('Param_Detail_List');
    var count = listObj._data.length;
    Supposedly this gets me the total count of ALL the rows in the list, not just the filtered ones:
    Code:
    var listObj = {dialog.object}.getControl('Param_Detail_List');
    var count = listObj._state.recordCount;
    But it returns 0. I assume that this has something to do with being a child list?

    How do I get the count of all rows in the child list, not just the filtered ones?
    Peter
    AlphaBase Solutions, LLC

    [email protected]
    https://www.alphabasesolutions.com



  • #2
    Re: Need TOTAL row count in child list, filtered or not

    The List control has a bucket of settings as well as ways to set it up... especially a Parent/Child setup. ._state.recordCount will work for a Filtered List... a List you apply a filter to, but not a Parent/Child filtered List. Essentially, the Child List Data is not yet rendered... so .recordCount is not really available. We don't yet know anything about the Child List until it's Parent loads it.

    If you have 2 Lists and apply a client-side filter to the "child", then .recordCount will be viable.

    One of the Child List options in a Parent/Child setup is Pre-load data. If you have this turned on, then you can get a Child List total count at the client-side, because we get all the Child data when the Parent is loaded... and that data exists within the Parent data array.

    If Pre-load data is not on, then an Ajax Callback is made each time a Parent row is selected in order to get the Child rows. At the client-side, we'd never know the count of the Child List. You'd need to perform an Ajax Callback to get the total count of the Child table.

    With the Child List set up as Pre-loaded data, and with that data existing in the Parent List data, we can get the Child count. If we have a Parent, Child, Grandchild setup, then all data for the Child and Grandchild Lists is in the Parent. It's quite elegant.

    Code:
    var pObj = {dialog.Object}.getControl('LISTPARENT');
    var pData = pObj._data;
    var pDataCount = pData.length;
    var cCount = 0;
    for(i=0;i<pDataCount;i++){
    	if(pData[i].__LIST__LISTCHILD1){	
    		cCount = cCount + pData[i].__LIST__LISTCHILD1.length;
    	}		
    }
    In this example of a Parent/Child, we grab a pointer to the Parent List. We get it's data and the count of that data.
    Then we loop over the data array, checking if that array element has a child list data array. If so, we grab it's length.

    Comment


    • #3
      Re: Need TOTAL row count in child list, filtered or not

      That's excellent David. I'll study and test this tomorrow.
      Peter
      AlphaBase Solutions, LLC

      [email protected]
      https://www.alphabasesolutions.com


      Comment


      • #4
        Re: Need TOTAL row count in child list, filtered or not

        Works for me. Thanks again David.
        Peter
        AlphaBase Solutions, LLC

        [email protected]
        https://www.alphabasesolutions.com


        Comment

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