Re: Why is eval in my Simple XML not working to se...

blurblebot · ‎11-22-2016

I've been having trouble trying to strptime a timestamp entered as an input for a dashboard, and had gotten strange results, so I've backed up and have tried to test some of the XML functions with more simple cases to see where I'm going wrong.

Unfortunately, I've made some test cases as simple as I can make them, and still something is wrong with my evals. I just can't sort it out.

If I enter, say "giraffe" into my input for the form described below, the only token that returns is the $newname$ token. $uCase$ and $leno$ both return "null"

With my test evals being so short, it has to (has to has to) be something simple, but I can't figure it out.

Pliz halp.

 <form>
      <label>TimeTestTakeThree</label>
      <fieldset submitButton="true">
        <input type="text" token="newname">
          <label>labelrino</label>
          <default>giraffe</default>
          <change>
            <eval token="Ucase">upper('newname')</eval>
            <eval token="leno">len('newname')</eval>
          </change>
        </input>
      </fieldset>
       <row>
             <html>
                 <p>Raw Entry: <b>$newname$</b></p>
                 <p>Upper(raw):<b>$Ucase$</b></p>
               <p>Length(raw): <b>$leno$</b></p>
             </html>
         </row>
    </form>

ro_mc · ‎11-05-2021

I realise this is a post from 2016, but I noticed that the <input> uses a <default> value rather than the recommended <initial> value per the Splunk docs (for the current version of 8.2.3), which may help others while troubleshooting this or similar issues on newer Splunk versions.

https://docs.splunk.com/Documentation/Splunk/8.2.3/Viz/FormEditor#Configure_input_value_handling

rjthibod · ‎02-22-2017

Try using the built-in token value instead of newname in the change block.

<form>
  <label>TimeTestTakeThree</label>
  <fieldset submitButton="true">
    <input type="text" token="newname">
      <label>labelrino</label>
      <default>giraffe</default>
      <change>
        <eval token="Ucase">upper('value')</eval>
        <eval token="leno">len('value')</eval>
      </change>
    </input>
  </fieldset>
  <row>
    <html>
      <p>Raw Entry: <b>$newname$</b></p>
      <p>Upper(raw):<b>$Ucase$</b></p>
      <p>Length(raw): <b>$leno$</b></p>
    </html>
  </row>
</form>

Treep · ‎02-22-2017

Hi, did you manage to find a solution to this yet? I have almost exactly the same problem, only that using $tokenname$ or 'tokenname' doesn't give me anything (isn't replaced by token value) and just using tokenname without $ or ' only results in 0 or "null".

nfilippi_splunk · ‎11-23-2016

Try this:

<form>
  <label>TimeTestTakeThree</label>

  <fieldset submitButton="true">
    <input type="text" token="newname">
      <label>labelrino</label>
      <default>giraffe</default>
      <change>
        <eval token="ucaseSetToken">upper('newname')</eval>
      </change>
    </input>
  </fieldset>

  <row>
    <panel>
      <html>
        <p>upperSetToken:<b>$ucaseSetToken$</b></p>
      </html>
    </panel>
  </row>

</form>

niketn · ‎11-22-2016

Correct the following in your change event handler

   <change>
     <eval token="Ucase">upper($newname$)</eval>
     <eval token="leno">len($newname$)</eval>
   </change>

____________________________________________
| makeresults | eval message= "Happy Splunking!!!"

blurblebot · ‎11-22-2016

Tried already. Still comes back null.

   <form>
      <label>TimeTestTakeThree</label>
      <fieldset submitButton="true">
        <input type="text" token="newname">
          <label>labelrino</label>
          <default>giraffe</default>
          <change>
            <eval token="ucaseSetToken">upper($newname$)</eval>
          </change>
        </input>
      </fieldset>
       <row>
             <html>
                 <p>upperSetToken:<b>$ucaseSetToken$</b></p>
             </html>
         </row>
    </form>

Why is eval in my Simple XML not working to set and return certain token values?

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Why is eval in my Simple XML not working to set and return certain token values?

Thanks for the Memories! Splunk University, .conf25, and our Community

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Introducing Splunk 10.0: Smarter, Faster, and More Powerful Than Ever