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Add/Remove Name From List On Button Click


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I've got a workflow going where when a logged in user clicks a 'Join' button on a specific record, their name will be added to a 'Help List'.

The 'Help List' field is a text(255). The Join button goes to an auto-submitting Single Record Update. The script was working fine with just adding names to the list.

However, I would like to add another button alongside 'Join' that will do the opposite - get the user's name from Auth, search the string for their name, and remove it from the Help List field if there is a match. 

document.addEventListener('DataPageReady', function(){
  var list = document.getElementById("EditRecordHelp_List");
  var iD = '[@authfield:Employee_Table_Alias]';
  var joinList = document.getElementById("cbParamVirtual1");

  if(list.value == '' && joinList.value == 'Y'){
    list.value = iD;
  } else if(list.value != '' && joinList.value == 'Y'){
    list.value = list.value + '; ' + iD;
  } else if (list.value != '' && joinList.value =='N'){
    var ret = list.replace(iD, '');
  }
});

My idea is to have a virtual field checkbox on the Single Record Update form. When the 'Remove From List' button is clicked, it will also send a parameter of either Y/N to the SRU form. That is what joinList variable is for. Right now as is, the first two if statements are running, but they are ignoring the joinList condition. If Help List is blank, it will just add iD. If it isn't, it'll add '; ' + iD, no matter if the checkbox is checked or not.

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Weirdly enough, I checked the value for Virtual Checkbox and it always comes up as "Y" that's probably why the two statements are working. Maybe try just a text field instead since this is gonna be hidden anyway, I suppose?

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Thanks, @TellMeWhy. That made most of the script work. Now nothing is added when Virtual1 = 'N'.

However, I am struggling with the 'remove from list' part. First, I was getting an error, because I was referring to the variable and not the value of the variable. Fixed that, no more error. But, there's also no deleting happening. Below is my most recent attempt. I'm not sure if the replace function is written correctly, but I'm not getting any errors. 

  if(list.value == '' && joinList.value == 'Y'){
    list.value = iD;
  } else if(list.value != '' && joinList.value == 'Y'){
    list.value = list.value + '; ' + iD;
  } else if (list.value != '' && joinList.value =='N'){
    list = list.value.replace(iD, '');
    return list;
  }
});

 

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The following should delete the matching iD and the extra ' ;' from the list if there is one.

  if(list.value == '' && joinList.value == 'Y'){
    list.value = iD;
  } else if(list.value != '' && joinList.value == 'Y'){
    list.value = list.value + '; ' + iD;
  } else if (joinList.value == 'N'){
    list.value = list.value.replaceAll('; ' + iD, '');
    list.value = list.value.replace(iD, '');
  }

 

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