The solution of this is at the end
I monitor "magento" on twitter. Sometimes I read the tweets. A few minutes ago I found a tweet to a blog article which describes how to remove the coupon field from the cart.
It starts with:
There is no button in the backend to deactivate the coupon field in magento. Because of this you have to change the source code.
Then there is a description how to change
NO! NEVER touch files in app/code/core! NEVER! NEVER! NEVER!
IF you need to change them - and there are ALWAYS ways around this, copy them to
app/code/local/Mage and change them there.
There are a lot of reasons why this is a really bad idea. The first one is, if you change it this way you have a lot of trouble while updating OR all your changes are lost, because you overwrite them all.
Copies in app/code/local/Mage
If you copy the files to
app/code/local/Mage the changes are not lost, but you have a lot of trouble too, because the files after an update in
app/code/core/ are not used.
The question "Why core hacks in magento are a really bad idea?" can answer google for me.
How to change the layout
If you want changes in the layout, there are two main ways to achieve this:
- have your own theme
- or change the layout.xml (it is described in the german article at the webguys too)
Removing the coupon box from the cart
<default> <remove name="checkout.cart.coupon" /> </default>
Update: Vinai Kopp just mailed me, that
<remove /> doesn't use the parent block context, so you should use it directly in the handle.
Markdown doesn't support strike through, so to compare, the old code:
Update: Alternative with unsetChild
As far as I know
<remove> is the lastto be called. For this reason, it is not possible to have a block with the same name at another location. So you can use unsetChild instead (which works in the parent block context! ;-)). But be careful with the handles, because in
<default> the coupon-block doesn't exist yet.
<checkout_cart_index> <reference name="checkout.cart"> <action method="unsetChild"><name>coupon</name></action> </reference> </checkout_cart_index>