Why can't I get an attribute into shopping cart price rules?

[TylerWolf]

I would like to add my attribute weight as a shopping cart price rule. I have it set as Use for Promo Rule Conditions and have reindexed. Is there another step I am missing?

[letssewllc]

I'm wondering how to use attributes in promos too. 

[Store_Manager]

Hello.

Weight (to be exact 'Total weight') is available in 'Conditions' tab by default - magento rules condition

[TylerWolf]

But I don't need total weight, I need item weight.

[TylerWolf]

You can add them pretty easy by selecting the attribute and changing this to yes- Use for Promo Rule Conditions

The problem is you can't do that with weight. 

I found this-

I don't know if this is a bug or a feature, but it seams like you cannot use the weight attribute for the rule conditions and actions. When checking if an attribute is valid for rules this method is calledMage_Catalog_Model_Resource_Eav_Attribute::isAllowedForRuleCondition public function isAllowedForRuleCondition() { $allowedInputTypes = array('text', 'multiselect', 'textarea', 'date', 'datetime', 'select', 'boolean', 'price'); return $this->getIsVisible() && in_array($this->getFrontendInput(), $allowedInputTypes); } This seams reasonable. Now the strange part. The weight attribute has the frontend input weight. You can see this by running this query on the db. SELECT * FROM eav_attribute where attribute_code = 'weight'. Changing the frontend_input to text makes the attribute available in promo rules. But I can't tell you if this is a good idea or not.

The problem is I am not a big fan of modifying core code, plus I am not sure if it would break something else.