Traverse ez-multioption attribute options in EZ Publish PHP-side - php

Question

I need help to traverse all options in a multioption.
I use the Product-class with a new multioption-attribute called "product_properties". I need a function to check if the optionID the user chose on the front-end matches an option in the list, and return true if a match is found.
This way I can check if e.g. the user chose "Red" as the "Color" on a product.
In pseudo-code this is what I need:
Parameters: postedOptionID, currentObjectID
Fetch attribute "product_properties" (multioption) on object .
For each option for "Color" in "product_properties"
2.1 If postedOptionID == optionID
2.1.1 return true
Thanks

Answer 1

I finally found a way :)
$product_properties_name is the name of a class-attribute that's an 'ezmultioption'-datatype. In my case it's called 'product_properties' and is an attribute on the 'Product'-class.
First get all of the object's attribute:
$contentObjectAttributes = $contentObject->version($contentObject->attribute( 'current_version' ) )->contentObjectAttributes();
and then loop each and find 'product_properties':
// Loop all attributes of the object's class
foreach(array_keys($contentObjectAttributes) as $key)
{
$contentObjectAttribute = $contentObjectAttributes[$key];
$contentClassAttribute = $contentObjectAttribute->contentClassAttribute();
$attributeIdentifier = $contentClassAttribute->attribute("identifier");
// Get 'product_properties'-attribute
if ($attributeIdentifier == $product_properties_name)
{
// Get the multioption
$multioption_list = $contentObjectAttribute->content();
// Loop all multioption lists (Color, Make, Brand etc.)
foreach($multioption_list->attribute('multioption_list') as $index => $option)
{
// Loop through this multioption and get all options (if 'Color', get 'Blue', 'Red', 'Green' etc.)
foreach($option['optionlist'] as $option)
{
$optionValue = trim($option['value']);
// if there's a match on $optionValue, do something interesting...
}
}
}
}