[question] Add subnavigation tabs/links

[gavinhewitt]

I'm breaking my head over this and could use some help figuring it out (if even possible).

I'm trying to find a way to add subnavigation to one of the models/entities. I use backpack to admin some sort of e-commerce site that has multiple stores with each their own settings (general, design, products, etc.). I would like to add subnavigation for the selected store (/store/1/general, /store/1/design etc). Maybe I'm just not seeing it but how to achieve this in true backpack fashion?

I thought about a possible solution and tried it as proof of concept but it didn't work:

• add a new trait called SubNav, basically the same setup as how buttons work
• add a BaseStoreCrudController (extends CrudController) and extend StoreGeneralCrudController etc from that
• in the BaseStoreCrudController call $this->addSubNavLink([settings_here])
• add the required code for displaying in the view(s)

This doesn't work because it chokes on:
$this->subnav->push(new SubNavLink($placement, $name, $type, $content));

Call to a member function push() on null

If $this->addSubNavLink([settings_here]) is set in the basecontroller, $this->subnav is null, if I set it in StoreGeneralCrudController it works (but this is not the place for it).

Any ideas?

[gavinhewitt]

Umm, of course. initSubNav() is triggered upon setRoute() (which is called in StoreGeneralCrudController) and therefore null because you can't addSubNavLink before init. Makes sense (duhh). Obvious solution is to move setRoute() and other settings to the basecontroller.

[tabacitu]

Hmm... When you say settings do you mean "settings" or "entities", as in different CRUDS? If you mean nested cruds, take a look at this answer here: #82 (comment). I'm not 100% sure that's what you're looking for.

Cheers!

[gavinhewitt]

With settings I mean stuff like setModel() and setRoute()

[OwenMelbz]

I'm just tidying up some bits, so closing this off as its quite old now, if you guys feel the need to reopen, thats all good!