Magento quantity field doesn't work

i simply can't find a solution to my problem! The quantity field worked as it should. After a few months of programming on the whole shop, i wanted to test the quantity field and recognized that it doesn't function.

I only can add one product to the cart alth开发者_StackOverflowough i typed “3” in the quantity field.

I didn’t change anything in product/view.phtml and addtocart.phtml. Don't know where i have to search for this error. Maybe someone can give me a tip...

greets max

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The quantity field is used in the various product type prepareForCart functions. Did you override any of your product classes?

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solved

In my case, the button add to cart had not the original

onclick="productAddToCartForm.submit(this)"

With this method is not only the product submitted, the quantity is beeing submitted, too. In my on click was

onclick="setLocation('<?php echo $this->getAddToCartUrl($_product) ?>')"

This sent the data via GET and did it always without the quantity. Personaly I do not know, what, why or when the change occured to the view.phtml.

Hope this helps :)