创建具有多个子模块的扩展

Question

I'd like to create an extension (module) that includes a modification of the base system, and also includes two separate modules that can be placed in layouts. Both of these single instance modules depend on this modification.

With multi instance modules you can create multiple instances of a module who all share the same controllers and views.

Is there a way to have one base module install other modules that are then inserted as children of said base module, share the same admin controller / model, but different catalog controller / views?

Uninstalling the base module should lead to uninstalling the child modules as well.

Answer 1

You can achieve this by creating Model, View, Controller and Language files for the installable module. Let's call it the Main module .

Then you can create models, controllers and views for the sub-modules and load them into the Main Controller.

Example:

class ControllerExtensionModuleMainModule extends Controller {
    public function install() {
        $this->load->model('extension/module/MainModule');

        /**
         * Load submodule's model into the Main's module controller
         */
        $this->load->model('extension/module/SubModule');


        $this->model_extension_module_MainModule->install();

        /**
         * Execute install function that exists in Submodel (submodule)
         */
        $this->model_extension_module_SubModule->install();
    }
}

Using this approach you can create many "sub-modules" and install or uninstall them all together at the same time.

Note: Try to organize your classes and functions or else you will create an untangleable mess. Also keep always in mind the "Single Responsibility" principle.