how to override or extend productController from a module

[abdullacm]

Hi, I'm developing a module, i want to override or extend productController from the module, what are all the ways doing this other than placing /override/ directory using a module?

[razaro]

Well it is connected to what you want to accomplish.

Placing file in modules/override/ is one but it is better if you can some hook on product page

or module controller.

[abdullacm]

i need to add some code into postProcess of cartcontroller, how to do this with my module main file?

[razaro]

Well for that probably best way is overriding, but again depends what you want to do.

Maybe you could add additional tab in product edit in back office that could save some 

value, that value will be specific to each product.

[bellini13]

postProcess of the Cart Controller does not contain any hooks.  But the postProcess function really just executes a bunch of other functions for dealing with add, delete, update of a customer cart.

 

Do you need to do something for all of those events, or only 1 of them.

 

If you really want to do something during postProcess, then create the override file, and in that file you would have a single function that looks like this

public function postProcess()
{
    //add your logic here
    
    //then execute the parent postProcess here
    parent::postProcess();
}

Note that the above will execute your logic first, and then execute the standard logic second.  This is because the parent function will perform a redirect when it is finished, and your code would never execute if you move your custom logic after the parent call.

[gostbuster]

The best way is definetelly to use the override.

 

There is by the way a tip :

 

If you use parent::postProcess you may execute the parent method,

 

But what you would do instead is to use FrontController::method() to avoid passing by parent class while overriding

Edited October 13, 2014 by gostbuster (see edit history)

[bellini13]

The best way is definetelly to use the override.

 

You don't even know what they want to do, how can you jump to the conclusion that an override is the best way

[abdullacm]

i could accomplish this, placed cartController in my module's override folder and written a condition 

postProcess(){

  if(Module::isEnabled('my-module-name')
  {
         //my logic goes here
  }
 else
 {
      //non modified code here
  }
​
}

so the modified code is executed only if the module is enabled

 thanks for the replies.

[Rolige]

The easy way is by overriding the controller as bellini13 has mentioned, and the other way is using one hook of the shopping cart.