Answered Add blank value in TV using @EVAL

HI again!

I have a TV which creates a listbox out of values from a MIGX call in another page.
I have created a TV which uses the following to pull in the details I need:


So this works, and outputs a list of COLOURS used in the original resource.
But, I want the first value in the listbox to be blank, so that users can decide whether they want to show a colour or not.

I read something about using UNION to add a blank field at the beginning of the call, but I can't work out the syntax.

Thanks as always!
Andy

Not sure if it'll work but have you tried entering a blank space followed by || before your @EVAL ?

Quote from: lkfranklin at Jan 26, 2018, 03:48 AM

Not sure if it'll work but have you tried entering a blank space followed by || before your @EVAL ?

Thanks - just tried it, but it didn't work unfortunately.

Quote from: BobRay at Jan 26, 2018, 11:56 PM

Here are some more things to try:

@EVAL return ' ||' . $modx->runSnippet('getImageList',array('tpl'=>'@CODE:[[+COLOUR]]','outputSeparator'=>'||','tvname'=>'TVNAME','docid'=>'IDOFRESOURCE'));

@EVAL return '||' . $modx->runSnippet('getImageList',array('tpl'=>'@CODE:[[+COLOUR]]','outputSeparator'=>'||','tvname'=>'TVNAME','docid'=>'IDOFRESOURCE'));

@EVAL return '---||' . $modx->runSnippet('getImageList',array('tpl'=>'@CODE:[[+COLOUR]]','outputSeparator'=>'||','tvname'=>'TVNAME','docid'=>'IDOFRESOURCE'));

@EVAL return ' ||' . $modx->runSnippet('getImageList',array('tpl'=>'@CODE:[[+COLOUR]]','outputSeparator'=>'||','tvname'=>'TVNAME','docid'=>'IDOFRESOURCE'));

Thanks - they all work actually! The only thing is the blank field is very hard to select - it's not the full line-height of the ones with text in, but it's usable. Thanks again Bob - I have just donated on your site.

Thanks! I'm kind of surprised that they all work.

If you load the Manager page, turn on Dev. tools in your browser (Ctrl-shift-i), click on the little square with the arrow at the lower left, then on the blank field, you should be able to see a class or ID in the code in the window at the bottom. You may be able to style it with some extra CSS if your CSS is loaded after the MODX CSS. You may need to specify it as !important.

A plugin attached to OnDocFormRender or OnDocFormPrerender can load the CSS:

Quote from: BobRay at Jan 27, 2018, 02:51 PM

Thanks! I'm kind of surprised that they all work.

If you load the Manager page, turn on Dev. tools in your browser (Ctrl-shift-i), click on the little square with the arrow at the lower left, then on the blank field, you should be able to see a class or ID in the code in the window at the bottom. You may be able to style it with some extra CSS if your CSS is loaded after the MODX CSS. You may need to specify it as !important.

A plugin attached to OnDocFormRender or OnDocFormPrerender can load the CSS:

$modx->RegClientCSS('assets/css/my_style.css');
return;

Nice idea - thanks Bob. In the end I decided to just add `none||` to the query, instead of an empty field - and then if 'none' is selected, it ignores the TV. Saves having to dig into the manager CSS. Thanks for your help with this though - it's always much appreciated.

Andy