In which file/class, Magento checks if the coupon code is already used by the logged in customer or not?

  • 5
    what is the magento version? – MrTo-Kane Dec 29 '16 at 9:29

It is in app/code/core/Mage/SalesRule/Model/Validator.php

Also you can see the function in http://freegento.com/doc/d0/d40/_validator_8php-source.html

See the function process() on line 00106

file -> app/code/core/Mage/SalesRule/Model/Validator.php

method -> protected function _canProcessRule

public function process(Mage_Sales_Model_Quote_Item_Abstract $item)

in app/code/core/Mage/SalesRule/model/Validator.php around 297 line

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