Checkbox options to show data on multiple resources depending on selections

- 70 Posts
Cotton Reply #1, 11 years, 3 months ago
To set the scene...
I have some product resources and these products have checkbox options that when selected will populate a <ul> on the product page. The checkbox options are populated by pulling in the names of the child resources of a particular category in the resource list. I also need the child resources to then show which products have their option selected.

For example, I have three resources called Option1, Option2 & Option3. Product1 resource shows a checkbox list labelled Option1, Option2 & Option3. If I select Option1 & Option2 it will show Option1 & Option2 in a <ul> on Product1's page . Then on the Option1 & Option2 pages they will have Product1 listed.

I've populated the checkbox TV using the (old faithful) Multi-select box for related pages tutorial http://rtfm.modx.com/revolution/2.x/making-sites-with-modx/customizing-content/template-variables/creating-a-multi-select-box-for-related-pages-in-your-template and can then pull the data from this to populate my <ul> but I'm a little unsure on the final step of saying 'only show Product1 on the Option1 resource if Option1 is selected' and so on.

Code being used to populate the <ul> on the product page:

ProductCategories TV
```
@EVAL return $modx->runSnippet('listProductCategories',array('parent' => 70));
```
listProductCategories Snippet
```
$parent = $modx->getOption('parent',$scriptProperties,70);
$parentObj = $modx->getObject('modResource',$parent);
if (!($parentObj instanceof modResource)) { return ''; }
$resArray = $parentObj->getMany('Children');
$resources = array();
foreach($resArray as $res) {
  if ($res instanceof modResource) {
    $resources[] = $res->get('pagetitle') . '==' . $res->get('id');
  }
}
$out = implode("||",$resources);
return $out;
```
productCategories Snippet
```
if (empty($input)) { return 'Can\'t find any categories related to this product'; }
$tpl = $modx->getOption('tpl',$scriptProperties,'productCategoryListTpl');
if ($modx->getChunk($tpl) == '') { return 'We found some product categories, but don\'t know how to present it.'; }
$ids = explode('||', $input);
$output = array();
foreach ($ids as $key => $value) {
  $resource = $modx->getObject('modResource',array(
    'published' => 1,
    'id' => $value));
  if ($resource instanceof modResource) {
    $ta = $resource->toArray();
    $tvs = $resource->getTemplateVars();
    foreach ($tvs as $tv) {
       $ta[$tv->get('name')] = $tv->get('value');
    }
    $output[] = $modx->getChunk($tpl,$ta);
  }
}
return implode('',$output);
```
Call to populate the <ul>
```
[[productCategories? &input=`[[*productCategories]]` &tpl=`productCategoryListTpl`]]
```
Can the above also be tweaked to pull the info into the Option resources as needed?

Thanks in advance