where are the functions in a module called?

[stenio123]

Hello!

I am changing a 3rd party module to fit my needs, and I am having some progress.

However I still haven't figured out when and where zen cart calls the functions that I am working....

I am under the impression that every module has to have an "install()" function, in order to be shown in the admin screen.

However besides that I have no clue on how zen cart does its magic.

Is this documented somewhere? I checked the tutorials and wiki, but couldnt find anything. I think this goes beyond the override mechanism. Do I really need to hunt through all the files to try to understand what is going on??

[DrByte]

What kind of module are you working on ?

[stenio123]

a module under "Order Total".

Actually I am adjusting the "Quantity Discount" module http://www.thatsoftwareguy.com/zenca...discounts.html
to better suit my requirements.

[DrByte]

Okay -- what specific problems are you encountering ?

[stenio123]

So far not many problems after I started doing some logging for debug.

The only thing is it is not clear to me at which moment is this module called.... is there an instruction on the "install()" function that specifies that?

Basically I wanted to understand more about modules to avoid doing dirty hacks and maybe creating my own in the future. Do you know if there is documentation on that or are developers basically on their own to figure everything out?

Thanks!

[DrByte]

The install() function is only called when you click the "install" button in the admin area where your module is listed.

Sorry, there is no documentation published for how to write a module.

There are developer references in the wiki for a number of things, and some program-flow docs in the downloads section for reference.

[stenio123]

well, its a start......

thanks!